ICALEPCS2023 - List of Keywords (timing)

Paper	Title	Other Keywords	Page
MO4AO05	Development of a Timing and Data Link for EIC Common Hardware Platform	network, FPGA, alignment, site	228
	P. Bachek, T. Hayes, J. Mead, K. Mernick, G. Narayan, F. Severino BNL, Upton, New York, USA
	Funding: Contract Number DE-AC02-98CH10886 with the auspices of the US Department of Energy Modern timing distribution systems benefit from high configurability and the bidirectional transfer of timing data. The Electron Ion Collider (EIC) Common Hardware Platform (CHP) will integrate the functions of the existing RHIC Real Time Data Link (RTDL), Event Link, and Beam Sync Link, along with the Low-Level RF (LLRF) system Update Link (UL), into a common high speed serial link. One EIC CHP carrier board sup-ports up to eight external 8 Gbps high speed links via SFP+ modules, as well as up to six 8 Gbps high speed links to each of two daughterboards. A daughterboard will be designed for the purpose of timing data link distribution for use with the CHP. This daughterboard will have two high speed digital crosspoint switches and a Xilinx Artix Ultrascale⁺ FPGA onboard with GTY transceivers. One of these will be dedicated for a high-speed control and data link directly between the onboard FPGA and the carrier FPGA. The remaining GTY transceivers will be routed through the crosspoint switches. The daughterboard will support sixteen external SFP+ ports for timing distribution infrastructure with some ports dedicated for transmit only link fanout. The timing data link will support bidirectional data transfer including sending data or events from a downstream device back upstream. This flexibility will be achieved by routing the SFP+ ports through the crosspoint switches which allows the timing link datapaths to be forwarded directly through the daughterboard to the carrier and into the FPGA on the daughterboard in many different configurations.
	Slides MO4AO05 [1.236 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-MO4AO05
About •	Received ※ 05 October 2023 — Revised ※ 07 October 2023 — Accepted ※ 23 November 2023 — Issued ※ 07 December 2023
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MO4AO06	Overview and Outlook of FPGA Based Hardware Solutions for Data Synchronization, Acquisition and Processing at the Euxfel	FPGA, FEL, hardware, framework	233
	B.J. Fernandes, F. Babies, T. Freyermuth, P. Gessler, I.S. Soekmen, H. Sotoudi Namin EuXFEL, Schenefeld, Germany
	The European X-Ray Free Electron Laser facility (EuXFEL) provides ultra short coherent X-Ray flashes, spaced by 220 nanoseconds and with a duration of less than 100 femtoseconds, in bursts of up to 2700 pulses every 100ms to several instruments. The facility has been using standardized Field-Programmable Gate Array (FPGA) based hardware platforms since the beginning of user operation in 2017. These are used for timing distribution, data processing from large 2D detectors, high speed digitizers for acquisition and processing of pulse signals, monitoring beam characteristics, and low latency communication protocol for pulse data vetoing and Machine Protection System (MPS). Our experience grows in tandem with user requests for more specific and challenging case studies, leading to tailor made hardware algorithms and setups. In some cases, these can be fulfilled with the integration of new hardware, where collaboration with companies for new and/or updated platforms is a key factor, or taking advantage of unused features in current setups. In this overview, we present the FPGA hardware based solutions used to fulfill EuXFEL’s requirements. We also present our efforts in integrating new solutions and possible development directions, including Machine Learning (ML) research, with the aim of bringing more accurate results and configurable setups to user experiments and facilitate communications with other platforms used in the facility, namely Programmable Logic Controllers (PLC).
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-MO4AO06
About •	Received ※ 06 October 2023 — Accepted ※ 13 October 2023 — Issued ※ 23 October 2023
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MO4AO07	Status of the MicroTCA Based Beam Instrumentation DAQ Systems at GSI and FAIR	hardware, FPGA, detector, instrumentation	239
	T. Hoffmann, H. Bräuning, R.N. Geißler, T. Milosic GSI, Darmstadt, Germany
	While the first FAIR accelerator buildings are soon to be completed, MicroTCA-based data acquisition sys-tems for FAIR beam instrumentation are ready for use. By using commercial off-the-shelf components as well as open hardware with in-house expertise in FPGA programming, there are now DAQ solutions for almost all major detector systems in MicroTCA in operation at the existing GSI accelerators. Applications span a wide range of detector systems and hardware, often taking advantage of the high channel density and data trans-mission bandwidth available with MicroTCA. All DAQ systems are synchronised and triggered using a com-prehensive White Rabbit based timing system. This allows correlation of the data from the distributed acquisition systems on a nanosecond scale. In this paper, we present some examples of our DAQ implemented in MicroTCA covering the range of beam current, tune, position and profile measurements. While the latter uses GigE cameras in combination with scintillating screens, the other applications are based on ADCs with different sampling frequencies between 125 MSa/s up to 2.5 GSa/s or latching scalers with up to 10 MHz latching frequency.
	Slides MO4AO07 [3.497 MB]
	Poster MO4AO07 [3.790 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-MO4AO07
About •	Received ※ 29 September 2023 — Revised ※ 07 October 2023 — Accepted ※ 14 November 2023 — Issued ※ 07 December 2023
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TUMBCMO16	Research and Development of the Fast Orbit Feedback System for HEPS	power-supply, feedback, controls, interface	386
	P. Zhu, Y.C. He, D.P. Jin, Y.L. Zhang IHEP, Beijing, People’s Republic of China Z. Lei CSNS, dongguan, People’s Republic of China Z. Lei SARI-CAS, Pudong, Shanghai, People’s Republic of China D.Y. Wang DNSC, Dongguan, People’s Republic of China Z.X. Xie IHEP CSNS, Guangdong Province, People’s Republic of China
	The Fast Orbit Feedback (FOFB) system plays a critical role on the beam orbit stability in the storage ring of the High Energy Photon Source (HEPS), which is a fourth-generation diffraction-limited synchrotron radiation source, under construction in Beijing at present. Based on the latest development of FOFB systems, this paper addresses the design and implementation of the hardware and software, including the design of the dual-loop link, the architecture of sub-station hardware, the data transmission and feedback logic, and so on. The total latency is minimized to achieve an overall closed-loop bandwidth of 500Hz.
	Slides TUMBCMO16 [1.656 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-TUMBCMO16
About •	Received ※ 06 October 2023 — Revised ※ 09 October 2023 — Accepted ※ 24 November 2023 — Issued ※ 11 December 2023
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TUPDP005	Improvements on Kinematics and Control of Granite Benches at LNLS-Sirius	controls, resonance, damping, real-time	485
	J.V.E. Matoso, J.P.S. Furtado, J.P.B. Ishida, T.R. Silva Soares LNLS, Campinas, Brazil
	At the Brazilian Synchrotron Light Laboratory, the radiation beam is conditioned by optical elements that must be positioned with high stability and precision. Many of the optical elements are positioned using granite benches that provide high coupling stiffness to the ground and position control in up to six degrees of freedom, using a set of stepper motors. The solution of the inverse kinematics was done numerically by the Newton Raphson method. By employing the property that these systems have small rotation angles, the Jacobian matrix used in this numerical method can be simplified to reduce computational execution time and allow high processing rates. This paper also shows the results of adding a notch filter to the position servo control loop of the granite benches to increase stability due to their mass-spring-damper characteristics. The kinematics and control of the granite benches are implemented in an Omron Power Brick LV controller, with the kinematics developed in MATLAB and the C-code generated by MATLAB C-Coder. Reducing the execution time of the kinematics improves the efficient use of the computational resources and allows the real-time clock rate to be increased.
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-TUPDP005
About •	Received ※ 05 October 2023 — Revised ※ 10 October 2023 — Accepted ※ 29 November 2023 — Issued ※ 04 December 2023
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TUPDP018	About the New Linear Accelerator Control System at GSI	controls, operation, linac, software	529
	P. Gerhard GSI, Darmstadt, Germany
	The first accelerator at GSI, UNILAC, went into operation in the early 1970s. Today, UNILAC is a small accelerator complex, consisting of several ion sources, injector and main linacs comprising 23 RF cavities, several strippers and other instrumentation, serving a number of experimental areas and the synchrotron SIS18. Three ion species can be provided at different energies simultaneously in a fast time multiplex scheme, two at a time. The UNILAC is going to be the heavy ion injector linac for FAIR, supported by a dedicated proton linac. The current linac control system dates back to the 1990s. It was initiated for SIS18 and ESR, which enlarged GSI at the time, and was retrofitted to the UNILAC. The linear decelerator HITRAP was added in the last decade, while an sc cw linac is under development. Today, SIS18, ESR and lately CRYRING are already operated by a new system based on the LHC Software Architecture LSA, as FAIR will be. In order to replace the outdated linac control system and simplify and unify future operation, a new control system on the same basis is being developed for all GSI linacs. This contribution reports about this venture from a machine physicist point of view.
	Poster TUPDP018 [2.886 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-TUPDP018
About •	Received ※ 05 October 2023 — Accepted ※ 12 October 2023 — Issued ※ 14 October 2023
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TUPDP021	Machine Protection System Upgrade for a New Timing System at ELBE	PLC, operation, gun, controls	542
	M. Justus, M. Kuntzsch, A. Schwarz, K. Zenker HZDR, Dresden, Germany L. Krmpotić, U. Legat, Z. Oven, U. Rojec Cosylab, Ljubljana, Slovenia
	Running a CW electron accelerator as a user facility for more than two decades necessitates upgrades or even complete redesign of subsystems at some point. At ELBE, the outdated timing system needed a replacement due to obsolete components and functional limitations. Starting in 2019, with Cosylab as contractor and using hardware by Micro Research Finland, the new timing system has been developed and tested and is about to become operational. Besides the ability to generate a broader variety of beam patterns from single pulse mode to 26 MHz CW beams for the two electron sources, one of the benefits of the new system is improved machine safety. The ELBE control systems is mainly based on PLCs and industrial SCADA tools. This contribution depicts how the timing system implementation to the existing machine entailed extensions and modifications of the ELBE machine protection system, i.e. a new core MPS PLC, and how they are being realized.
	Poster TUPDP021 [0.731 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-TUPDP021
About •	Received ※ 04 October 2023 — Revised ※ 08 October 2023 — Accepted ※ 14 December 2023 — Issued ※ 16 December 2023
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TUPDP028	Challenges of the COSY Synchrotron Control System Upgrade to EPICS	controls, EPICS, synchrotron, power-supply	561
	C. Böhme, C. Deliege, M. Simon, M. Thelen FZJ, Jülich, Germany V. Kamerdzhiev GSI, Darmstadt, Germany R. Modic, Z. Oven Cosylab, Ljubljana, Slovenia
	The COSY (COoler SYncchrotron) at the Forschungszentrum Jülich is a hadron accelerator build in the early 90s, with work started in the late 80s. At this time the whole control system was based on a self-developed real-time operating system for Motorola m68k boards, utilizing, unusual for this time, IP-networks as transport layer. The GUI was completely based on Tcl/Tk. After 25 years of operation, in 2016, it was decided to upgrade the control system to EPICS and the GUI to CS-Studio, in order to e.g. allow a better automatization or automatized archiving of operational parameters. This was done together with Cosylab d.d. bit by bit while the synchrotron was in operation, and because of the complexity is still ongoing. The experiences of the stepwise upgrade process will be presented and a lessons learned will be emphasized.
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-TUPDP028
About •	Received ※ 06 October 2023 — Accepted ※ 12 October 2023 — Issued ※ 14 October 2023
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TUPDP088	Labview-Based Template for Enhanced Accelerator Systems Control: Software Solutions for the CERN-ISOLDE Facilities	controls, laser, ISOL, software	735
	C. Charrondière, O.O. Andreassen, A. Benoit, E.G. Galetti, R. Heinke, L.L. Le, B.A. Marsh, R.E. Rossel, S. Rothe, S. Sudak CERN, Meyrin, Switzerland G.E. Boorman Royal Holloway, University of London, Surrey, United Kingdom
	ISOLDE is part of the experimental infrastructure with-in the CERN accelerator complex that provides radioac-tive ion beams for studies of fundamental nuclear phys-ics, astrophysics, condensed matter physics and medical applications. Complementing the available controls in-frastructure, an easy-to-use set of applications was devel-oped to allow operators to record and display signals from multiple sources, as well as to provide drivers for non-standard, custom-made instruments and specialized off-the-shelf components. Aimed not only at software engineers but developers with any background, a generic and modular software template was developed in LabVIEW following a collab-oration between CERN and ANGARA Technology. This unified template can be extended to support interaction with any instrument and any newly developed applica-tion can be easily added to the existing control system and integrated into the CERN control and monitoring infrastructure. New modules and instrument drivers are easy to maintain as the structure and communication layers are all derived from the same template and based on the same components. In this paper, we will explain the implementation, ar-chitecture and structure of the template, as well as a wide variety of use cases - from motor control to image acquisi-tion and laser-specific equipment control. We will also show use cases of applications developed and deployed within a few days in the ISOLDE facility.
	Poster TUPDP088 [0.860 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-TUPDP088
About •	Received ※ 20 September 2023 — Revised ※ 09 October 2023 — Accepted ※ 12 October 2023 — Issued ※ 23 October 2023
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TUPDP089	Improving CERN’s Web-based Rapid Application Platform	controls, operation, software, GUI	740
	E. Galatas, S. Deghaye, J. Raban, C. Roderick, D. Saxena, A. Solomou CERN, Meyrin, Switzerland
	The Web-based Rapid Application Platform (WRAP) aims to provide a centralized, zero-code, drag-n-drop means of GUI creation. It was developed at CERN to address the high maintenance cost of supporting multiple evolving GUI-technologies and minimising duplication of effort by those developing different GUI applications. WRAP leverages web technologies and existing controls infrastructure to provide a drop-in solution for a range of use cases. However, providing a centralized platform to cater for diverse needs and to interact with a multitude of data sources presented performance, design, and deployment challenges. This paper describes how the WRAP architecture has evolved to address these challenges, overcoming technological limitations, increasing usability and the resulting end-user adoption. "WRAP - A WEB-BASED RAPID APPLICATION DEVELOPMENT FRAMEWORK FOR CERN’S CONTROLS INFRASTRUCTURE", E. Galatas et al, ICALEPCS 2021, Shanghai, THPV013
	Poster TUPDP089 [3.174 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-TUPDP089
About •	Received ※ 05 October 2023 — Revised ※ 20 October 2023 — Accepted ※ 14 December 2023 — Issued ※ 22 December 2023
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TUPDP094	EPICS NTTables for Machine Timing Configuration	MMI, EPICS, MEBT, controls	767
	A.A. Gorzawski, J.P.S. Martins, N. Milas ESS, Lund, Sweden
	The European Spallation Source (ESS), currently under construction and initial commissioning in Lund, Sweden, will be the brightest spallation neutron source in the world, when its driving proton linac achieves the design power of 5 MW at 2 GeV. Such a high power requires production, efficient acceleration, and almost no-loss transport of a high current beam, thus making the design and beam commissioning of this machine challenging. The recent commissioning runs (2021-2023) showed an enhanced need for a consistent and robust way of setting up the machine for beam production. One of the big challenges at ESS beam operations is aligning the machine setup and the timing setup limiting the need for operator actions. In this paper, we show a concept of using EPICS 7 NTTables to enable this machine settings consistency. Along with that, we also highlight a few challenges related to other EPICS tools like Save and Restore and Archiver.
	Poster TUPDP094 [0.682 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-TUPDP094
About •	Received ※ 04 October 2023 — Accepted ※ 06 December 2023 — Issued ※ 08 December 2023
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TUPDP101	A Modular Approach for Accelerator Controls Components Deployment for High Power Pulsed Systems	controls, kicker, operation, power-supply	788
	S. Pavis, R.A. Barlow, C. Boucly, E. Carlier, C. Chanavat, C.A. Lolliot, N. Magnin, P. Van Trappen CERN, Meyrin, Switzerland N. Voumard European Organization for Nuclear Research (CERN), Geneva, Switzerland
	As part of the LHC Injector Upgrade (LIU) project, the controls of the PSB and PS injection kickers at CERN have been upgraded during Long Shutdown 2 (LS2) from heterogeneous home-made electronic solutions to a modular and open architecture. Despite both kickers have significantly different functionalities, topologies and operational requirements, standardized hardware and software control blocks have been used for both systems. The new control architecture is built around a set of sub-systems, each one with a specific generic function required for the control of fast pulsed systems such as equipment and personnel safety, slow control and protection, high precision fast timing system, fast interlocking and protection, pulsed signal acquisition and analysis. Each sub-system comprises a combined integration of hardware components and associated low level software. This paper presents the functionality of the different sub-systems, illustrates how they have been integrated for the two different use-cases, discusses the lessons learned from these first implementations and identifies possible evolution in view of deployment in other installations during Long Shutdown 3 (LS3).
	Poster TUPDP101 [0.842 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-TUPDP101
About •	Received ※ 06 October 2023 — Revised ※ 21 October 2023 — Accepted ※ 05 December 2023 — Issued ※ 06 December 2023
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TUPDP114	Machine Learning Based Noise Reduction of Neutron Camera Images at ORNL	neutron, network, target, operation	841
	I.V. Pogorelov, J.P. Edelen, M.J. Henderson, M.C. Kilpatrick RadiaSoft LLC, Boulder, Colorado, USA S. Calder, B. Vacaliuc ORNL RAD, Oak Ridge, Tennessee, USA R.D. Gregory, G.S. Guyotte, C.M. Hoffmann, B.K. Krishna ORNL, Oak Ridge, Tennessee, USA
	Funding: This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Science under Award Number DE-SC0021555. Neutron cameras are utilized at the HB2A powder diffractometer to image the sample for alignment in the beam. Typically, neutron cameras are quite noisy as they are constantly being irradiated. Removal of this noise is challenging due to the irregular nature of the pixel intensity fluctuations and the tendency for it to change over time. RadiaSoft has developed a novel noise reduction method for neutron cameras that inscribes a lower envelope of the image signal. This process is then sped up using machine learning. Here we report on the results of our noise reduction method and describe our machine learning approach for speeding up the algorithm for use during operations.
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-TUPDP114
About •	Received ※ 07 October 2023 — Revised ※ 22 October 2023 — Accepted ※ 11 December 2023 — Issued ※ 16 December 2023
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TUPDP121	Conceptual Design of the Matter in Extreme Conditions Upgrade (MEC-U) Rep-Rated Laser Control System	controls, laser, EPICS, hardware	865
	B.T. Fishler, F. Batysta, J. Galbraith, V.K. Gopalan, J. Jimenez, L.S. Kiani, E.S. Koh, J.F. McCarrick, A.K. Patel, R.E. Plummer, B. Reagan, E. Sistrunk, T.M. Spinka, K. Terzi, K.M. Velas LLNL, Livermore, California, USA M.Y. Cabral, T.A. Wallace, J. Yin SLAC, Menlo Park, California, USA
	Funding: This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. The Lawrence Livermore National Laboratory (LLNL) is delivering the Dual-mode Energetic Laser for Plasma and High Intensity Science (DELPHI) system to SLAC as part of the MEC-U project to create an unprecedented platform for high energy density experiments. The DELPHI control system is required to deliver short and/or long pulses at a 10 Hz firing rate with femto/pico-second accuracy sustained over fourteen 12-hour operator shifts to a common shared target chamber. The MEC-U system requires the integration of the control system with SLAC provided controls related to personnel safety, machine safety, precision timing, data analysis and visualization, amongst others. To meet these needs along with the system’s reliability, availability, and maintainability requirements, LLNL is delivering an EPICS based control system leveraging proven SLAC technology. This talk presents the conceptual design of the DELPHI control system and the methods planned to ensure its successful commissioning and delivery to SLAC.
	Poster TUPDP121 [1.610 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-TUPDP121
About •	Received ※ 02 October 2023 — Revised ※ 09 October 2023 — Accepted ※ 04 December 2023 — Issued ※ 17 December 2023
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TUPDP127	SLAC LINAC Mode Manager Interface	linac, interface, undulator, EPICS	882
	T. Summers, C. Bianchini Mattison, M. Gibbs, T.J. Kabana, P. Krejcik, J.A. Mock SLAC, Menlo Park, California, USA
	With the successful commissioning of the new superconducting (SC) LINAC, the LINAC Coherent Light Source (LCLS) now has the capability of interleaving beams from either the normal conducting (NC) LINAC or the SC LINAC to two different destinations, the soft (SXR) and hard (HXR) x-ray undulator beamlines. A mode manager user interface has been created to manage the beamline configuration to transport beam pulses to multiple destinations, which include the numerous intermediate tune-up dumps and safety dumps between the injectors and the final beam dumps. The mode manager interfaces with the timing system which controls the bunch patterns to the various locations, and the machine protection system which prevents excess beam power from being sent to the wrong destination. This paper describes the implementation method for handling the mode switching, as well as the operator user interface which allows users to graphically select the desired beam paths.
	Poster TUPDP127 [1.191 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-TUPDP127
About •	Received ※ 05 October 2023 — Revised ※ 22 October 2023 — Accepted ※ 30 November 2023 — Issued ※ 09 December 2023
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TUPDP136	Control Systems Design for STS Accelerator	controls, operation, target, LLRF	903
	J. Yan, S.M. Hartman, K.-U. Kasemir ORNL, Oak Ridge, Tennessee, USA
	Funding: This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The Second Target Station (STS) Project will expand the capabilities of the existing Spallation Neutron Source (SNS), with a suite of neutron instruments optimized for long wavelengths. A new accelerator transport line will be built to deliver one out of four SNS pulses to the new target station. The Integrated Control Systems (ICS) will provide remote control, monitoring, OPI, alarms, and archivers for the accelerator systems, such as magnets power supply, vacuum devices, and beam instrumentation. The ICS will upgrade the existing Linac LLRF controls to allow independent operation of the FTS and STS and support different power levels of the FTS and STS proton beam. The ICS accelerator controls are in the phase of preliminary design for the control systems of magnet power supply, vacuum, LLRF, Timing, Machine protection system (MPS), and computing and machine network. The accelerator control systems build upon the existing SNS Machine Control systems, use the SNS standard hardware and EPICS software, and take full advantage of the performance gains delivered by the PPU Project at SNS.
	Poster TUPDP136 [2.403 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-TUPDP136
About •	Received ※ 27 September 2023 — Revised ※ 09 October 2023 — Accepted ※ 13 October 2023 — Issued ※ 22 October 2023
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WE1BCO03	Design of the HALF Control System	controls, network, EPICS, operation	958
	G. Liu, L.G. Chen, C. Li, X.K. Sun, K. Xuan, D.D. Zhang USTC/NSRL, Hefei, Anhui, People’s Republic of China
	The Hefei Advanced Light Facility (HALF) is a 2.2-GeV 4th synchrotron radiation light source, which is scheduled to start construction in Hefei, China in 2023. The HALF contains an injector and a 480-m diffraction limited storage ring, and 10 beamlines for phase one. The HALF control system is EPICS based with integrated application and data platforms for the entire facility including accelerator and beamlines. The unified infrastructure and network architecture are designed to build the control system. The infrastructure provides resources for the EPICS development and operation through virtualization technology, and provides resources for the storage and process of experimental data through distributed storage and computing clusters. The network is divided into the control network and the dedicated high-speed data network by physical separation, the control network is subdivided into multiple subnets by VLAN technology. Through estimating the scale of the control system, the 10Gbps control backbone network and the data network that can be expanded to 100Gbps can fully meet the communication requirements of the control system. This paper reports the control system architecture design and the development work of some key technologies in details.
	Slides WE1BCO03 [2.739 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-WE1BCO03
About •	Received ※ 02 October 2023 — Revised ※ 09 October 2023 — Accepted ※ 13 October 2023 — Issued ※ 26 October 2023
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WE1BCO07	The LCLS-II Precision Timing Control System	laser, EPICS, controls, interface	966
	T.K. Johnson, M.C. Browne, C.B. Pino SLAC, Menlo Park, California, USA
	The LCLS-II precision timing system is responsible for the synchronization of optical lasers with the LCLS-II XFEL. The system uses both RF and optical references for synchronization. In contrast to previous systems used at LCLS the optical lasers are shared resources, and must be managed during operations. The timing system consists of three primary functionalities: RF reference distribution, optical reference distribution, and a phase-locked loop (PLL). This PLL may use either the RF or the optical reference as a feedback source. The RF allows for phase comparisons over a relatively wide range, albeit with limited resolution, while the optical reference enables very fine phase comparison (down to attoseconds), but with limited operational range. These systems must be managed using high levels of automation. Much of this automation is done via high-level applications developed in EPICS. The beamline users are presented with relatively simple interfaces that streamline operation and abstract much of the system complexity away. The system provides both PyDM GUIs as well as python interfaces to enable time delay scanning in the LCLS-II DAQ.
	Slides WE1BCO07 [3.734 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-WE1BCO07
About •	Received ※ 06 November 2023 — Revised ※ 09 November 2023 — Accepted ※ 14 December 2023 — Issued ※ 20 December 2023
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WE3AO02	High Fidelity Pulse Shaping for the National Ignition Facility	experiment, target, diagnostics, laser	1058
	A.S. Gowda, A.I. Barnes, B.W. Buckley, A. Calonico-Soto, E.J. Carr, J.T. Chou, P.T. Devore, J.-M.G. Di Nicola, V.K. Gopalan, J. Heebner, V.J. Hernandez, R.D. Muir, A. Pao, L. Pelz, L. Wang, A.T. Wargo LLNL, Livermore, California, USA
	Funding: This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344 The National Ignition Facility (NIF) is the world’s most energetic laser capable of delivering 2.05MJ of energy with peak powers up to 500 terawatts on targets a few mms in diameter. This enables extreme conditions in temperature and pressure allowing a wide variety of exploratory experiments from triggering fusion ignition to emulating temperatures at the center of stars or pressures at the center of giant planets. The capability enabled the groundbreaking results of December 5th, 2022 when scientific breakeven in fusion was demonstrated with a target gain of 1.5. A key aspect of supporting various experiments at NIF is the ability to custom shape the pulses of the 48 quads independently with high fidelity as needed by the experimentalists. For more than 15 years, the Master Oscillator Room’s (MOR) pulse shaping system has served NIF well. However, a pulse shaping system that would provide higher shot-to-shot stability, better power balance and accuracy across the 192 beams is required for future NIF experiments including ignition. The pulse shapes requested vary drastically at NIF which led to challenging requirements for the hardware, timing and closed loop shaping systems. In the past two years, a High-Fidelity Pulse Shaping System was designed, and a proof-of-concept system was shown to meet all requirements. This talk will discuss design challenges, solutions and how modernization of the pulse shaping hardware helped simple control algorithms meet the stringent requirements set by the experimentalists. LLNL Release Number: LLNL-ABS-848060
	Slides WE3AO02 [6.678 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-WE3AO02
About •	Received ※ 04 October 2023 — Revised ※ 09 October 2023 — Accepted ※ 13 October 2023 — Issued ※ 22 October 2023
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THMBCMO23	Development of a New Timing System for ISIS	hardware, target, controls, network	1247
	R.A. Washington STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom
	The timing system at the ISIS Neutron and Muon source has been operating in its current iteration since 2008. Machine timing is handled by the Central Timing Distributor (CTD) which transmits various timing signals to ISIS accelerator equipment over RS-422 compliant timing buses. The nature of these timing signals has not changed since ISIS first delivered neutrons in 1984, and this paper will look at how an event-based timing system can be employed in the next generation of timing system for ISIS. A new timing system should allow for the distribution of events, triggers and timestamps, provide an increase in timing resolution and be fully backwards compatible with the current timing frame. The new Digitised Waveform System (DWS) at ISIS supports White Rabbit (WR). There is an available WR network which can be used to investigate a new timing system based on WR technology. Conclusions will be drawn from installing this new system in parallel with the current timing system; a comparison between the systems, alternatives, and next steps will be discussed.
	Slides THMBCMO23 [0.798 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-THMBCMO23
About •	Received ※ 05 October 2023 — Revised ※ 10 October 2023 — Accepted ※ 13 December 2023 — Issued ※ 17 December 2023
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THMBCMO24	Time Synchronization and Timestamping for the ESS Neutron Instruments	neutron, detector, hardware, controls	1250
	N. Holmberg, T. Brys, T. Bögershausen, M. Olsson, J.E. Petersson, A. Pettersson, T.S. Richter, F. Rojas ESS, Lund, Sweden
	Funding: Tillväxtverket (Sweden) & European Union The European Spallation Source (ESS) will be a cutting-edge research facility that uses neutrons to study the properties of materials. This paper presents the timestamping strategy employed in the neutron instruments of the ESS, to enable efficient data correlation across subsystems and between different sources of experiment data. ESS uses absolute timestamps for all data and a global source clock to synchronize and timestamp data at the lowest appropriate level from each subsystem. This way we control the impact of jitter, delays and latencies when transferring experiment data to the data storage. ESS utilizes three time synchronisation technologies. The Network Time Protocol (NTP) providing an expected accuracy of approximately 10 milliseconds, the Precision Time Protocol (PTP) delivering roughly 10 microsecond accuracy, and hardware timing using Microreseach Finland (MRF) Event Receivers (EVR) which can reach 10 nanoseconds of accuracy. Both NTP and PTP rely on network communication using common internet protocols, while the EVRs use physical input and output signals combined with timestamp latching in hardware. The selection of the timestamping technology for each device and subsystem is based on their timestamp accuracy requirements, available interfaces, and cost requirements. This paper describes the choice of method used for different device types, like neutron choppers, detectors or sample environment equipment and covers some details of the implementation and characterisation.
	Slides THMBCMO24 [0.384 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-THMBCMO24
About •	Received ※ 06 October 2023 — Accepted ※ 11 December 2023 — Issued ※ 13 December 2023
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THPDP012	Evolution of the Laser Megajoule Timing System	laser, diagnostics, experiment, target	1312
	T. Somerlinck CEA, LE BARP cedex, France S. Hocquet, D. Monnier-Bourdin Greenfield Technology, Massy, France
	The Laser MegaJoule (LMJ), a 176-beam laser facility developed by CEA, is located at the CEA CESTA site near Bordeaux. The LMJ facility is part of the French Simulation Program, which combines improvement of theoretical models and data used in various fields of physics, high performance numerical simulations and experimental validation. It is designed to deliver about 1.4 MJ of energy on targets, for high energy density physics experiments, including fusion experiments. With 120 operational beams at the end of 2023, operational capabilities are gradually increasing until the full completion of the LMJ facility by 2025. To verify the synchronization of the precise delay generators, used on each bundle, a new timing diagnostic has been designed to observe the 1w and 3w fiducial signals. Meanwhile, due to electronic obsolescence, a new modified prototype precise of a delay generator, with ’new and old channels’, has been tested and compared. In this paper, a review of the LMJ synchronization report is given with a description of the first timing diagnostic as well as an overview of the LMJ delay generator obsolescence update. It also presents some leads for a future timing system. LMJ: Laser MegaJoule CEA: Commissariat à l’Energie Atomique et aux Energies Alternatives
	Poster THPDP012 [3.535 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-THPDP012
About •	Received ※ 10 October 2023 — Revised ※ 14 November 2023 — Accepted ※ 19 December 2023 — Issued ※ 21 December 2023
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THPDP016	Full Stack Performance Optimizations for FAIR Operation	controls, operation, hardware, storage-ring	1325
	A. Schaller, H.C. Hüther, R. Mueller, A. Walter GSI, Darmstadt, Germany
	In the last beam times, operations reported a lack of performance and long waiting times when performing simple changes of the machines’ settings. To ensure performant operation of the future Facility for Antiproton and Ion Research (FAIR), the "Task Force Performance" (TFP) was formed in mid-2020, which aimed at optimizing all involved Control System components. Baseline measurements were recorded for different scenarios to compare and evaluate the steps taken by the TFP. These measurements contained data from all underlying systems, from hardware device data supply over network traffic up to user interface applications. Individual groups searched, detected and fixed performance bottlenecks in their components of the Control System stack, and the interfaces between these individual components were inspected as well. The findings are presented here.
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-THPDP016
About •	Received ※ 04 October 2023 — Revised ※ 29 November 2023 — Accepted ※ 13 December 2023 — Issued ※ 20 December 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPDP018	The Timing System for PETRA IV	controls, software, hardware, interface	1335
	T. Wilksen, V. Andrei, K. Brede, H.T. Duhme, M. Fenner, U. Hurdelbrink, J.M. Jäger, H. Kay, H. Lippek, F. Ludwig, M. Pawelzik, S. Ruzin, H. Schlarb DESY, Hamburg, Germany
	At DESY, the PETRA III synchrotron light source upgrade towards a fourth-generation, low-emittance machine PETRA IV is being pursued. The realisation of the new machine requires a complete redesign of the timing system, as the beam quality and beam control requirements will change significantly. The new timing system must generate and distribute facility-wide precise clocks, trigger signals, trigger events and beam-synchronous information. The design of the main hardware components will be based on the MTCA.4 standard, which has become a well-established platform at DESY and successfully been in use with DESY FEL’s MTCA.4-based timing systems for almost a decade now. This paper presents and discusses the PETRA IV timing system overall concept and functionality and its hardware components development status.
	Poster THPDP018 [1.259 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-THPDP018
About •	Received ※ 04 October 2023 — Revised ※ 12 October 2023 — Accepted ※ 16 October 2023 — Issued ※ 26 October 2023
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THPDP051	LLRF and Timing System Integration at ESS	LLRF, controls, cavity, MMI	1426
	G.S. Fedel, A.A. Gorzawski, J.J. Jamróz, J.P.S. Martins, N. Milas, A.P. Persson, A.M. Svensson, R.H. Zeng ESS, Lund, Sweden
	The Low Level Radio Frequency (LLRF) system is an important part of a Spallation Source facility as ESS. LLRF is commonly used with many different setups depending on the aim: preparation, calibration, conditioning, commission and others. These different setups are strongly connected to another important system on accelerators: the Timing System. This proceeding presents how at ESS we implemented the integration between LLRF and Timing systems on the control system scope. The integration of these two systems provides different and important features as: allow different ways to trigger the RF system (synced or not to other systems), define how the RF output will be defined (based on the features of the expected beam), re-configure LLRF depending on the timing setup and more. This integration was developed on both ends, LLRF and timing, and is mostly concentrated on the control system layer based on EPICS. Dealing with the different scenarios, synchronicity and considering all the software, hardware and firmware involved are some of the challenges of this integration. The result of this work was used during the ESS accelerator commissioning in 2022 and will be used on next ESS accelerator commissioning in 2023.
	Poster THPDP051 [0.993 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-THPDP051
About •	Received ※ 05 October 2023 — Accepted ※ 08 December 2023 — Issued ※ 12 December 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPDP052	Characterizing Motion Control Systems to Enable Accurate Continuous and Event-Based Scans	laser, controls, PLC, neutron	1431
	J.E. Petersson, T. Bögershausen, N. Holmberg, M. Olsson, T.S. Richter, F. Rojas ESS, Lund, Sweden
	The European Spallation Source (ESS) is adopting innovative data acquisition and analysis methods using global timestamping for neutron scattering research. This study characterises the timing accuracy and reliability of the instrument control system by examining an integrated motion and fast detection system. We designed an experimental apparatus featuring a motion axis controlled by a Beckhoff programmable logic controller (PLC) using TwinCAT 3 software. The encoder readback is timestamped in the PLC, which is time-synchronised with the ESS master clock via a Microresearch Finland event receiver (EVR) using Precision Time Protocol (PTP). We repeatedly scanned the motor between known positions at different speeds. The system was characterised by correlating the position and timestamp recorded by the PLC with independent information using a fast optical position sensor read out directly by the MRF system. The findings of this study provide a good benchmark for the upcoming experiments in neutron scattering research at ESS and should be interesting for those aiming to build similar setups.
	Poster THPDP052 [1.185 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-THPDP052
About •	Received ※ 05 October 2023 — Accepted ※ 08 December 2023 — Issued ※ 12 December 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPDP057	SPS Beam Dump Enhancements on Tracking and Synchronization	injection, kicker, controls, operation	1444
	N. Voumard, N. Magnin, P. Van Trappen European Organization for Nuclear Research (CERN), Geneva, Switzerland
	During Long Shutdown 2 (LS2) at CERN, the SPS Beam Dumping System (SBDS) was completely renovated and relocated to SPS Point 5. This allowed to deploy at the SPS the Beam Energy Tracking System (BETS) and the Trigger Synchronization Unit (TSU), initially designed for and operational at the LHC Beam Dumping System (LBDS). The challenge encountered in this migration was the dynamic multi-cycle operation scheme with fast ramping cycles of the SPS in comparison to the long physics periods at stable energy of the LHC. This paper describes the modification of both BETS and TSU systems as well as the automatic arming sequence put in place, including the interactions with the SPS injection, the beam revolution frequency, and the Beam Interlock System (BIS).
	Poster THPDP057 [0.490 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-THPDP057
About •	Received ※ 05 October 2023 — Revised ※ 26 October 2023 — Accepted ※ 08 December 2023 — Issued ※ 12 December 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPDP080	Gateware and Software for ALS-U Instrumentation	controls, hardware, software, FPGA	1536
	L.M. Russo, A. Amodio, M.J. Chin, W.E. Norum, K.S. Penney, G.J. Portmann, J.M. Weber LBNL, Berkeley, California, USA
	Funding: Work supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. The Advanced Light Source Upgrade (ALS-U) is a diffraction-limited light source upgrade project under development at the Lawrence Berkeley National Laboratory. The Instrumentation team is responsible for developing hardware, gateware, embedded software and control system integration for diagnostics projects, including Beam Position Monitor (BPM), Fast Orbit Feedback (FOFB), High Speed Digitizer (HSD), Beam Current Monitor (BCM), as well as Fast Machine Protection System (FMPS) and Timing. This paper describes the gateware and software approach to these projects, its challenges, tests and integration plans for the novel accumulation and storage rings and transfer lines.
	Poster THPDP080 [4.586 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-THPDP080
About •	Received ※ 04 October 2023 — Revised ※ 27 October 2023 — Accepted ※ 08 December 2023 — Issued ※ 15 December 2023
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THPDP085	LANSCE’s Timing System Status and Future Plans	controls, hardware, distributed, operation	1547
	L.E. Walker, B.C. Atencio, S.A. Baily, D. Fratantonio, C.D. Hatch, M. Pieck, T. Ramakrishnan LANL, Los Alamos, New Mexico, USA
	Funding: This work was supported by the U.S. DOE through the Los Alamos National Laboratory (LANL). LANL is operated by Triad National Security, LLC, for the NNSA of U.S. DOE - Contract No. 89233218CNA000001 The Los Alamos Neutron Science Center (LANSCE) operates at a maximum repetition rate of 120 Hz. Timing gates are required for synchronization of the accelerator to provide beam acceleration along the LINAC and beam distribution to the five experimental areas. They are also provided to other devices with sensitive operating points relative to the machine cycle. Over the last 50 years of operations many new time sensitive pieces of equipment have been added. This has changed the demand on, and complexity of, the timing system. Further driven by equipment obsolescence issues, the timing system un-derwent many upgrades and revitalization efforts, with the most significant deployment starting in 2016. Due to these upgrade efforts, the timing system architecture design changed from a purely centralized system, to a distributed event-based one. The purpose of this paper is to detail the current state of the timing system, as a hy-brid system with the gate events being generated from a new timing master system, while still utilizing legacy distribution and fanout systems. Upgrades to the distribu-tion system are planned, but due to the required beam delivery schedule, they can only be deployed in sections during four-month annual maintenance cycles. The paper will also cover the off-the-shelf solutions that have been found for standardization, and the efforts towards a life cycle management process. LA-UR-23-31123
	Poster THPDP085 [3.311 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-THPDP085
About •	Received ※ 29 September 2023 — Revised ※ 11 October 2023 — Accepted ※ 06 December 2023 — Issued ※ 13 December 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

FR1BCO01	Status of the European Spallation Source Controls	EPICS, controls, PLC, operation	1600
	T. Korhonen ESS, Lund, Sweden
	The European Spallation Source has made substantial progress in the recent years. Similarly, the control system has taken shape and has gone through the first commissioning and is now in production use. While there are still features and services in preparation, the central features are already in place. The talk will give an overview of the areas where the control system is used, our use and experience with the central technologies like MTCA.4 and EPICS 7, plus an overview of the next steps. The talk will also look at what was planned and reported in ICALEPCS 2015 and how our system of today compares with them, and the evolution from green field project to an operating organization.
	Slides FR1BCO01 [2.354 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-FR1BCO01
About •	Received ※ 06 October 2023 — Revised ※ 12 October 2023 — Accepted ※ 12 December 2023 — Issued ※ 15 December 2023
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Paper

Title

Other Keywords

Page

MO4AO05

Development of a Timing and Data Link for EIC Common Hardware Platform

network, FPGA, alignment, site

228

P. Bachek, T. Hayes, J. Mead, K. Mernick, G. Narayan, F. Severino
BNL, Upton, New York, USA

Funding: Contract Number DE-AC02-98CH10886 with the auspices of the US Department of Energy
Modern timing distribution systems benefit from high configurability and the bidirectional transfer of timing data. The Electron Ion Collider (EIC) Common Hardware Platform (CHP) will integrate the functions of the existing RHIC Real Time Data Link (RTDL), Event Link, and Beam Sync Link, along with the Low-Level RF (LLRF) system Update Link (UL), into a common high speed serial link. One EIC CHP carrier board sup-ports up to eight external 8 Gbps high speed links via SFP+ modules, as well as up to six 8 Gbps high speed links to each of two daughterboards. A daughterboard will be designed for the purpose of timing data link distribution for use with the CHP. This daughterboard will have two high speed digital crosspoint switches and a Xilinx Artix Ultrascale⁺ FPGA onboard with GTY transceivers. One of these will be dedicated for a high-speed control and data link directly between the onboard FPGA and the carrier FPGA. The remaining GTY transceivers will be routed through the crosspoint switches. The daughterboard will support sixteen external SFP+ ports for timing distribution infrastructure with some ports dedicated for transmit only link fanout. The timing data link will support bidirectional data transfer including sending data or events from a downstream device back upstream. This flexibility will be achieved by routing the SFP+ ports through the crosspoint switches which allows the timing link datapaths to be forwarded directly through the daughterboard to the carrier and into the FPGA on the daughterboard in many different configurations.

Slides MO4AO05 [1.236 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-MO4AO05

About •

Received ※ 05 October 2023 — Revised ※ 07 October 2023 — Accepted ※ 23 November 2023 — Issued ※ 07 December 2023

Cite •

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MO4AO06

Overview and Outlook of FPGA Based Hardware Solutions for Data Synchronization, Acquisition and Processing at the Euxfel

FPGA, FEL, hardware, framework

233

B.J. Fernandes, F. Babies, T. Freyermuth, P. Gessler, I.S. Soekmen, H. Sotoudi Namin
EuXFEL, Schenefeld, Germany

The European X-Ray Free Electron Laser facility (EuXFEL) provides ultra short coherent X-Ray flashes, spaced by 220 nanoseconds and with a duration of less than 100 femtoseconds, in bursts of up to 2700 pulses every 100ms to several instruments. The facility has been using standardized Field-Programmable Gate Array (FPGA) based hardware platforms since the beginning of user operation in 2017. These are used for timing distribution, data processing from large 2D detectors, high speed digitizers for acquisition and processing of pulse signals, monitoring beam characteristics, and low latency communication protocol for pulse data vetoing and Machine Protection System (MPS). Our experience grows in tandem with user requests for more specific and challenging case studies, leading to tailor made hardware algorithms and setups. In some cases, these can be fulfilled with the integration of new hardware, where collaboration with companies for new and/or updated platforms is a key factor, or taking advantage of unused features in current setups. In this overview, we present the FPGA hardware based solutions used to fulfill EuXFEL’s requirements. We also present our efforts in integrating new solutions and possible development directions, including Machine Learning (ML) research, with the aim of bringing more accurate results and configurable setups to user experiments and facilitate communications with other platforms used in the facility, namely Programmable Logic Controllers (PLC).

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-MO4AO06

About •

Received ※ 06 October 2023 — Accepted ※ 13 October 2023 — Issued ※ 23 October 2023

Cite •

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MO4AO07

Status of the MicroTCA Based Beam Instrumentation DAQ Systems at GSI and FAIR

hardware, FPGA, detector, instrumentation

239

T. Hoffmann, H. Bräuning, R.N. Geißler, T. Milosic
GSI, Darmstadt, Germany

While the first FAIR accelerator buildings are soon to be completed, MicroTCA-based data acquisition sys-tems for FAIR beam instrumentation are ready for use. By using commercial off-the-shelf components as well as open hardware with in-house expertise in FPGA programming, there are now DAQ solutions for almost all major detector systems in MicroTCA in operation at the existing GSI accelerators. Applications span a wide range of detector systems and hardware, often taking advantage of the high channel density and data trans-mission bandwidth available with MicroTCA. All DAQ systems are synchronised and triggered using a com-prehensive White Rabbit based timing system. This allows correlation of the data from the distributed acquisition systems on a nanosecond scale. In this paper, we present some examples of our DAQ implemented in MicroTCA covering the range of beam current, tune, position and profile measurements. While the latter uses GigE cameras in combination with scintillating screens, the other applications are based on ADCs with different sampling frequencies between 125 MSa/s up to 2.5 GSa/s or latching scalers with up to 10 MHz latching frequency.

Slides MO4AO07 [3.497 MB]

Poster MO4AO07 [3.790 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-MO4AO07

About •

Received ※ 29 September 2023 — Revised ※ 07 October 2023 — Accepted ※ 14 November 2023 — Issued ※ 07 December 2023

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TUMBCMO16

Research and Development of the Fast Orbit Feedback System for HEPS

power-supply, feedback, controls, interface

386

P. Zhu, Y.C. He, D.P. Jin, Y.L. Zhang
IHEP, Beijing, People’s Republic of China
Z. Lei
CSNS, dongguan, People’s Republic of China
Z. Lei
SARI-CAS, Pudong, Shanghai, People’s Republic of China
D.Y. Wang
DNSC, Dongguan, People’s Republic of China
Z.X. Xie
IHEP CSNS, Guangdong Province, People’s Republic of China

The Fast Orbit Feedback (FOFB) system plays a critical role on the beam orbit stability in the storage ring of the High Energy Photon Source (HEPS), which is a fourth-generation diffraction-limited synchrotron radiation source, under construction in Beijing at present. Based on the latest development of FOFB systems, this paper addresses the design and implementation of the hardware and software, including the design of the dual-loop link, the architecture of sub-station hardware, the data transmission and feedback logic, and so on. The total latency is minimized to achieve an overall closed-loop bandwidth of 500Hz.

Slides TUMBCMO16 [1.656 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-TUMBCMO16

About •

Received ※ 06 October 2023 — Revised ※ 09 October 2023 — Accepted ※ 24 November 2023 — Issued ※ 11 December 2023

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TUPDP005

Improvements on Kinematics and Control of Granite Benches at LNLS-Sirius

controls, resonance, damping, real-time

485

J.V.E. Matoso, J.P.S. Furtado, J.P.B. Ishida, T.R. Silva Soares
LNLS, Campinas, Brazil

At the Brazilian Synchrotron Light Laboratory, the radiation beam is conditioned by optical elements that must be positioned with high stability and precision. Many of the optical elements are positioned using granite benches that provide high coupling stiffness to the ground and position control in up to six degrees of freedom, using a set of stepper motors. The solution of the inverse kinematics was done numerically by the Newton Raphson method. By employing the property that these systems have small rotation angles, the Jacobian matrix used in this numerical method can be simplified to reduce computational execution time and allow high processing rates. This paper also shows the results of adding a notch filter to the position servo control loop of the granite benches to increase stability due to their mass-spring-damper characteristics. The kinematics and control of the granite benches are implemented in an Omron Power Brick LV controller, with the kinematics developed in MATLAB and the C-code generated by MATLAB C-Coder. Reducing the execution time of the kinematics improves the efficient use of the computational resources and allows the real-time clock rate to be increased.

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-TUPDP005

About •

Received ※ 05 October 2023 — Revised ※ 10 October 2023 — Accepted ※ 29 November 2023 — Issued ※ 04 December 2023

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TUPDP018

About the New Linear Accelerator Control System at GSI

controls, operation, linac, software

529

P. Gerhard
GSI, Darmstadt, Germany

The first accelerator at GSI, UNILAC, went into operation in the early 1970s. Today, UNILAC is a small accelerator complex, consisting of several ion sources, injector and main linacs comprising 23 RF cavities, several strippers and other instrumentation, serving a number of experimental areas and the synchrotron SIS18. Three ion species can be provided at different energies simultaneously in a fast time multiplex scheme, two at a time. The UNILAC is going to be the heavy ion injector linac for FAIR, supported by a dedicated proton linac. The current linac control system dates back to the 1990s. It was initiated for SIS18 and ESR, which enlarged GSI at the time, and was retrofitted to the UNILAC. The linear decelerator HITRAP was added in the last decade, while an sc cw linac is under development. Today, SIS18, ESR and lately CRYRING are already operated by a new system based on the LHC Software Architecture LSA, as FAIR will be. In order to replace the outdated linac control system and simplify and unify future operation, a new control system on the same basis is being developed for all GSI linacs. This contribution reports about this venture from a machine physicist point of view.

Poster TUPDP018 [2.886 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-TUPDP018

About •

Received ※ 05 October 2023 — Accepted ※ 12 October 2023 — Issued ※ 14 October 2023

Cite •

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TUPDP021

Machine Protection System Upgrade for a New Timing System at ELBE

PLC, operation, gun, controls

542

M. Justus, M. Kuntzsch, A. Schwarz, K. Zenker
HZDR, Dresden, Germany
L. Krmpotić, U. Legat, Z. Oven, U. Rojec
Cosylab, Ljubljana, Slovenia

Running a CW electron accelerator as a user facility for more than two decades necessitates upgrades or even complete redesign of subsystems at some point. At ELBE, the outdated timing system needed a replacement due to obsolete components and functional limitations. Starting in 2019, with Cosylab as contractor and using hardware by Micro Research Finland, the new timing system has been developed and tested and is about to become operational. Besides the ability to generate a broader variety of beam patterns from single pulse mode to 26 MHz CW beams for the two electron sources, one of the benefits of the new system is improved machine safety. The ELBE control systems is mainly based on PLCs and industrial SCADA tools. This contribution depicts how the timing system implementation to the existing machine entailed extensions and modifications of the ELBE machine protection system, i.e. a new core MPS PLC, and how they are being realized.

Poster TUPDP021 [0.731 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-TUPDP021

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Received ※ 04 October 2023 — Revised ※ 08 October 2023 — Accepted ※ 14 December 2023 — Issued ※ 16 December 2023

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TUPDP028

Challenges of the COSY Synchrotron Control System Upgrade to EPICS

controls, EPICS, synchrotron, power-supply

561

C. Böhme, C. Deliege, M. Simon, M. Thelen
FZJ, Jülich, Germany
V. Kamerdzhiev
GSI, Darmstadt, Germany
R. Modic, Z. Oven
Cosylab, Ljubljana, Slovenia

The COSY (COoler SYncchrotron) at the Forschungszentrum Jülich is a hadron accelerator build in the early 90s, with work started in the late 80s. At this time the whole control system was based on a self-developed real-time operating system for Motorola m68k boards, utilizing, unusual for this time, IP-networks as transport layer. The GUI was completely based on Tcl/Tk. After 25 years of operation, in 2016, it was decided to upgrade the control system to EPICS and the GUI to CS-Studio, in order to e.g. allow a better automatization or automatized archiving of operational parameters. This was done together with Cosylab d.d. bit by bit while the synchrotron was in operation, and because of the complexity is still ongoing. The experiences of the stepwise upgrade process will be presented and a lessons learned will be emphasized.

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-TUPDP028

About •

Received ※ 06 October 2023 — Accepted ※ 12 October 2023 — Issued ※ 14 October 2023

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TUPDP088

Labview-Based Template for Enhanced Accelerator Systems Control: Software Solutions for the CERN-ISOLDE Facilities

controls, laser, ISOL, software

735

C. Charrondière, O.O. Andreassen, A. Benoit, E.G. Galetti, R. Heinke, L.L. Le, B.A. Marsh, R.E. Rossel, S. Rothe, S. Sudak
CERN, Meyrin, Switzerland
G.E. Boorman
Royal Holloway, University of London, Surrey, United Kingdom

ISOLDE is part of the experimental infrastructure with-in the CERN accelerator complex that provides radioac-tive ion beams for studies of fundamental nuclear phys-ics, astrophysics, condensed matter physics and medical applications. Complementing the available controls in-frastructure, an easy-to-use set of applications was devel-oped to allow operators to record and display signals from multiple sources, as well as to provide drivers for non-standard, custom-made instruments and specialized off-the-shelf components. Aimed not only at software engineers but developers with any background, a generic and modular software template was developed in LabVIEW following a collab-oration between CERN and ANGARA Technology. This unified template can be extended to support interaction with any instrument and any newly developed applica-tion can be easily added to the existing control system and integrated into the CERN control and monitoring infrastructure. New modules and instrument drivers are easy to maintain as the structure and communication layers are all derived from the same template and based on the same components. In this paper, we will explain the implementation, ar-chitecture and structure of the template, as well as a wide variety of use cases - from motor control to image acquisi-tion and laser-specific equipment control. We will also show use cases of applications developed and deployed within a few days in the ISOLDE facility.

Poster TUPDP088 [0.860 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-TUPDP088

About •

Received ※ 20 September 2023 — Revised ※ 09 October 2023 — Accepted ※ 12 October 2023 — Issued ※ 23 October 2023

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TUPDP089

Improving CERN’s Web-based Rapid Application Platform

controls, operation, software, GUI

740

E. Galatas, S. Deghaye, J. Raban, C. Roderick, D. Saxena, A. Solomou
CERN, Meyrin, Switzerland

The Web-based Rapid Application Platform (WRAP) aims to provide a centralized, zero-code, drag-n-drop means of GUI creation*. It was developed at CERN to address the high maintenance cost of supporting multiple evolving GUI-technologies and minimising duplication of effort by those developing different GUI applications. WRAP leverages web technologies and existing controls infrastructure to provide a drop-in solution for a range of use cases. However, providing a centralized platform to cater for diverse needs and to interact with a multitude of data sources presented performance, design, and deployment challenges. This paper describes how the WRAP architecture has evolved to address these challenges, overcoming technological limitations, increasing usability and the resulting end-user adoption.
* "WRAP - A WEB-BASED RAPID APPLICATION DEVELOPMENT FRAMEWORK FOR CERN’S CONTROLS INFRASTRUCTURE", E. Galatas et al, ICALEPCS 2021, Shanghai, THPV013

Poster TUPDP089 [3.174 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-TUPDP089

About •

Received ※ 05 October 2023 — Revised ※ 20 October 2023 — Accepted ※ 14 December 2023 — Issued ※ 22 December 2023

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TUPDP094

EPICS NTTables for Machine Timing Configuration

MMI, EPICS, MEBT, controls

767

A.A. Gorzawski, J.P.S. Martins, N. Milas
ESS, Lund, Sweden

The European Spallation Source (ESS), currently under construction and initial commissioning in Lund, Sweden, will be the brightest spallation neutron source in the world, when its driving proton linac achieves the design power of 5 MW at 2 GeV. Such a high power requires production, efficient acceleration, and almost no-loss transport of a high current beam, thus making the design and beam commissioning of this machine challenging. The recent commissioning runs (2021-2023) showed an enhanced need for a consistent and robust way of setting up the machine for beam production. One of the big challenges at ESS beam operations is aligning the machine setup and the timing setup limiting the need for operator actions. In this paper, we show a concept of using EPICS 7 NTTables to enable this machine settings consistency. Along with that, we also highlight a few challenges related to other EPICS tools like Save and Restore and Archiver.

Poster TUPDP094 [0.682 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-TUPDP094

About •

Received ※ 04 October 2023 — Accepted ※ 06 December 2023 — Issued ※ 08 December 2023

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TUPDP101

A Modular Approach for Accelerator Controls Components Deployment for High Power Pulsed Systems

controls, kicker, operation, power-supply

788

S. Pavis, R.A. Barlow, C. Boucly, E. Carlier, C. Chanavat, C.A. Lolliot, N. Magnin, P. Van Trappen
CERN, Meyrin, Switzerland
N. Voumard
European Organization for Nuclear Research (CERN), Geneva, Switzerland

As part of the LHC Injector Upgrade (LIU) project, the controls of the PSB and PS injection kickers at CERN have been upgraded during Long Shutdown 2 (LS2) from heterogeneous home-made electronic solutions to a modular and open architecture. Despite both kickers have significantly different functionalities, topologies and operational requirements, standardized hardware and software control blocks have been used for both systems. The new control architecture is built around a set of sub-systems, each one with a specific generic function required for the control of fast pulsed systems such as equipment and personnel safety, slow control and protection, high precision fast timing system, fast interlocking and protection, pulsed signal acquisition and analysis. Each sub-system comprises a combined integration of hardware components and associated low level software. This paper presents the functionality of the different sub-systems, illustrates how they have been integrated for the two different use-cases, discusses the lessons learned from these first implementations and identifies possible evolution in view of deployment in other installations during Long Shutdown 3 (LS3).

Poster TUPDP101 [0.842 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-TUPDP101

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Received ※ 06 October 2023 — Revised ※ 21 October 2023 — Accepted ※ 05 December 2023 — Issued ※ 06 December 2023

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TUPDP114

Machine Learning Based Noise Reduction of Neutron Camera Images at ORNL

neutron, network, target, operation

841

I.V. Pogorelov, J.P. Edelen, M.J. Henderson, M.C. Kilpatrick
RadiaSoft LLC, Boulder, Colorado, USA
S. Calder, B. Vacaliuc
ORNL RAD, Oak Ridge, Tennessee, USA
R.D. Gregory, G.S. Guyotte, C.M. Hoffmann, B.K. Krishna
ORNL, Oak Ridge, Tennessee, USA

Funding: This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Science under Award Number DE-SC0021555.
Neutron cameras are utilized at the HB2A powder diffractometer to image the sample for alignment in the beam. Typically, neutron cameras are quite noisy as they are constantly being irradiated. Removal of this noise is challenging due to the irregular nature of the pixel intensity fluctuations and the tendency for it to change over time. RadiaSoft has developed a novel noise reduction method for neutron cameras that inscribes a lower envelope of the image signal. This process is then sped up using machine learning. Here we report on the results of our noise reduction method and describe our machine learning approach for speeding up the algorithm for use during operations.

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-TUPDP114

About •

Received ※ 07 October 2023 — Revised ※ 22 October 2023 — Accepted ※ 11 December 2023 — Issued ※ 16 December 2023

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TUPDP121

Conceptual Design of the Matter in Extreme Conditions Upgrade (MEC-U) Rep-Rated Laser Control System

controls, laser, EPICS, hardware

865

B.T. Fishler, F. Batysta, J. Galbraith, V.K. Gopalan, J. Jimenez, L.S. Kiani, E.S. Koh, J.F. McCarrick, A.K. Patel, R.E. Plummer, B. Reagan, E. Sistrunk, T.M. Spinka, K. Terzi, K.M. Velas
LLNL, Livermore, California, USA
M.Y. Cabral, T.A. Wallace, J. Yin
SLAC, Menlo Park, California, USA

Funding: This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344.
The Lawrence Livermore National Laboratory (LLNL) is delivering the Dual-mode Energetic Laser for Plasma and High Intensity Science (DELPHI) system to SLAC as part of the MEC-U project to create an unprecedented platform for high energy density experiments. The DELPHI control system is required to deliver short and/or long pulses at a 10 Hz firing rate with femto/pico-second accuracy sustained over fourteen 12-hour operator shifts to a common shared target chamber. The MEC-U system requires the integration of the control system with SLAC provided controls related to personnel safety, machine safety, precision timing, data analysis and visualization, amongst others. To meet these needs along with the system’s reliability, availability, and maintainability requirements, LLNL is delivering an EPICS based control system leveraging proven SLAC technology. This talk presents the conceptual design of the DELPHI control system and the methods planned to ensure its successful commissioning and delivery to SLAC.

Poster TUPDP121 [1.610 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-TUPDP121

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Received ※ 02 October 2023 — Revised ※ 09 October 2023 — Accepted ※ 04 December 2023 — Issued ※ 17 December 2023

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TUPDP127

SLAC LINAC Mode Manager Interface

linac, interface, undulator, EPICS

882

T. Summers, C. Bianchini Mattison, M. Gibbs, T.J. Kabana, P. Krejcik, J.A. Mock
SLAC, Menlo Park, California, USA

With the successful commissioning of the new superconducting (SC) LINAC, the LINAC Coherent Light Source (LCLS) now has the capability of interleaving beams from either the normal conducting (NC) LINAC or the SC LINAC to two different destinations, the soft (SXR) and hard (HXR) x-ray undulator beamlines. A mode manager user interface has been created to manage the beamline configuration to transport beam pulses to multiple destinations, which include the numerous intermediate tune-up dumps and safety dumps between the injectors and the final beam dumps. The mode manager interfaces with the timing system which controls the bunch patterns to the various locations, and the machine protection system which prevents excess beam power from being sent to the wrong destination. This paper describes the implementation method for handling the mode switching, as well as the operator user interface which allows users to graphically select the desired beam paths.

Poster TUPDP127 [1.191 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-TUPDP127

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Received ※ 05 October 2023 — Revised ※ 22 October 2023 — Accepted ※ 30 November 2023 — Issued ※ 09 December 2023

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TUPDP136

Control Systems Design for STS Accelerator

controls, operation, target, LLRF

903

J. Yan, S.M. Hartman, K.-U. Kasemir
ORNL, Oak Ridge, Tennessee, USA

Funding: This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE).
The Second Target Station (STS) Project will expand the capabilities of the existing Spallation Neutron Source (SNS), with a suite of neutron instruments optimized for long wavelengths. A new accelerator transport line will be built to deliver one out of four SNS pulses to the new target station. The Integrated Control Systems (ICS) will provide remote control, monitoring, OPI, alarms, and archivers for the accelerator systems, such as magnets power supply, vacuum devices, and beam instrumentation. The ICS will upgrade the existing Linac LLRF controls to allow independent operation of the FTS and STS and support different power levels of the FTS and STS proton beam. The ICS accelerator controls are in the phase of preliminary design for the control systems of magnet power supply, vacuum, LLRF, Timing, Machine protection system (MPS), and computing and machine network. The accelerator control systems build upon the existing SNS Machine Control systems, use the SNS standard hardware and EPICS software, and take full advantage of the performance gains delivered by the PPU Project at SNS.

Poster TUPDP136 [2.403 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-TUPDP136

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Received ※ 27 September 2023 — Revised ※ 09 October 2023 — Accepted ※ 13 October 2023 — Issued ※ 22 October 2023

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WE1BCO03

Design of the HALF Control System

controls, network, EPICS, operation

958

G. Liu, L.G. Chen, C. Li, X.K. Sun, K. Xuan, D.D. Zhang
USTC/NSRL, Hefei, Anhui, People’s Republic of China

The Hefei Advanced Light Facility (HALF) is a 2.2-GeV 4th synchrotron radiation light source, which is scheduled to start construction in Hefei, China in 2023. The HALF contains an injector and a 480-m diffraction limited storage ring, and 10 beamlines for phase one. The HALF control system is EPICS based with integrated application and data platforms for the entire facility including accelerator and beamlines. The unified infrastructure and network architecture are designed to build the control system. The infrastructure provides resources for the EPICS development and operation through virtualization technology, and provides resources for the storage and process of experimental data through distributed storage and computing clusters. The network is divided into the control network and the dedicated high-speed data network by physical separation, the control network is subdivided into multiple subnets by VLAN technology. Through estimating the scale of the control system, the 10Gbps control backbone network and the data network that can be expanded to 100Gbps can fully meet the communication requirements of the control system. This paper reports the control system architecture design and the development work of some key technologies in details.

Slides WE1BCO03 [2.739 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-WE1BCO03

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Received ※ 02 October 2023 — Revised ※ 09 October 2023 — Accepted ※ 13 October 2023 — Issued ※ 26 October 2023

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WE1BCO07

The LCLS-II Precision Timing Control System

laser, EPICS, controls, interface

966

T.K. Johnson, M.C. Browne, C.B. Pino
SLAC, Menlo Park, California, USA

The LCLS-II precision timing system is responsible for the synchronization of optical lasers with the LCLS-II XFEL. The system uses both RF and optical references for synchronization. In contrast to previous systems used at LCLS the optical lasers are shared resources, and must be managed during operations. The timing system consists of three primary functionalities: RF reference distribution, optical reference distribution, and a phase-locked loop (PLL). This PLL may use either the RF or the optical reference as a feedback source. The RF allows for phase comparisons over a relatively wide range, albeit with limited resolution, while the optical reference enables very fine phase comparison (down to attoseconds), but with limited operational range. These systems must be managed using high levels of automation. Much of this automation is done via high-level applications developed in EPICS. The beamline users are presented with relatively simple interfaces that streamline operation and abstract much of the system complexity away. The system provides both PyDM GUIs as well as python interfaces to enable time delay scanning in the LCLS-II DAQ.

Slides WE1BCO07 [3.734 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-WE1BCO07

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Received ※ 06 November 2023 — Revised ※ 09 November 2023 — Accepted ※ 14 December 2023 — Issued ※ 20 December 2023

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WE3AO02

High Fidelity Pulse Shaping for the National Ignition Facility

experiment, target, diagnostics, laser

1058

A.S. Gowda, A.I. Barnes, B.W. Buckley, A. Calonico-Soto, E.J. Carr, J.T. Chou, P.T. Devore, J.-M.G. Di Nicola, V.K. Gopalan, J. Heebner, V.J. Hernandez, R.D. Muir, A. Pao, L. Pelz, L. Wang, A.T. Wargo
LLNL, Livermore, California, USA

Funding: This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344
The National Ignition Facility (NIF) is the world’s most energetic laser capable of delivering 2.05MJ of energy with peak powers up to 500 terawatts on targets a few mms in diameter. This enables extreme conditions in temperature and pressure allowing a wide variety of exploratory experiments from triggering fusion ignition to emulating temperatures at the center of stars or pressures at the center of giant planets. The capability enabled the groundbreaking results of December 5th, 2022 when scientific breakeven in fusion was demonstrated with a target gain of 1.5. A key aspect of supporting various experiments at NIF is the ability to custom shape the pulses of the 48 quads independently with high fidelity as needed by the experimentalists. For more than 15 years, the Master Oscillator Room’s (MOR) pulse shaping system has served NIF well. However, a pulse shaping system that would provide higher shot-to-shot stability, better power balance and accuracy across the 192 beams is required for future NIF experiments including ignition. The pulse shapes requested vary drastically at NIF which led to challenging requirements for the hardware, timing and closed loop shaping systems. In the past two years, a High-Fidelity Pulse Shaping System was designed, and a proof-of-concept system was shown to meet all requirements. This talk will discuss design challenges, solutions and how modernization of the pulse shaping hardware helped simple control algorithms meet the stringent requirements set by the experimentalists.
LLNL Release Number: LLNL-ABS-848060

Slides WE3AO02 [6.678 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-WE3AO02

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Received ※ 04 October 2023 — Revised ※ 09 October 2023 — Accepted ※ 13 October 2023 — Issued ※ 22 October 2023

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THMBCMO23

Development of a New Timing System for ISIS

hardware, target, controls, network

1247

R.A. Washington
STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom

The timing system at the ISIS Neutron and Muon source has been operating in its current iteration since 2008. Machine timing is handled by the Central Timing Distributor (CTD) which transmits various timing signals to ISIS accelerator equipment over RS-422 compliant timing buses. The nature of these timing signals has not changed since ISIS first delivered neutrons in 1984, and this paper will look at how an event-based timing system can be employed in the next generation of timing system for ISIS. A new timing system should allow for the distribution of events, triggers and timestamps, provide an increase in timing resolution and be fully backwards compatible with the current timing frame. The new Digitised Waveform System (DWS) at ISIS supports White Rabbit (WR). There is an available WR network which can be used to investigate a new timing system based on WR technology. Conclusions will be drawn from installing this new system in parallel with the current timing system; a comparison between the systems, alternatives, and next steps will be discussed.

Slides THMBCMO23 [0.798 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-THMBCMO23

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Received ※ 05 October 2023 — Revised ※ 10 October 2023 — Accepted ※ 13 December 2023 — Issued ※ 17 December 2023

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THMBCMO24

Time Synchronization and Timestamping for the ESS Neutron Instruments

neutron, detector, hardware, controls

1250

N. Holmberg, T. Brys, T. Bögershausen, M. Olsson, J.E. Petersson, A. Pettersson, T.S. Richter, F. Rojas
ESS, Lund, Sweden

Funding: Tillväxtverket (Sweden) & European Union
The European Spallation Source (ESS) will be a cutting-edge research facility that uses neutrons to study the properties of materials. This paper presents the timestamping strategy employed in the neutron instruments of the ESS, to enable efficient data correlation across subsystems and between different sources of experiment data. ESS uses absolute timestamps for all data and a global source clock to synchronize and timestamp data at the lowest appropriate level from each subsystem. This way we control the impact of jitter, delays and latencies when transferring experiment data to the data storage. ESS utilizes three time synchronisation technologies. The Network Time Protocol (NTP) providing an expected accuracy of approximately 10 milliseconds, the Precision Time Protocol (PTP) delivering roughly 10 microsecond accuracy, and hardware timing using Microreseach Finland (MRF) Event Receivers (EVR) which can reach 10 nanoseconds of accuracy. Both NTP and PTP rely on network communication using common internet protocols, while the EVRs use physical input and output signals combined with timestamp latching in hardware. The selection of the timestamping technology for each device and subsystem is based on their timestamp accuracy requirements, available interfaces, and cost requirements. This paper describes the choice of method used for different device types, like neutron choppers, detectors or sample environment equipment and covers some details of the implementation and characterisation.

Slides THMBCMO24 [0.384 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-THMBCMO24

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Received ※ 06 October 2023 — Accepted ※ 11 December 2023 — Issued ※ 13 December 2023

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THPDP012

Evolution of the Laser Megajoule Timing System

laser, diagnostics, experiment, target

1312

T. Somerlinck
CEA, LE BARP cedex, France
S. Hocquet, D. Monnier-Bourdin
Greenfield Technology, Massy, France

The Laser MegaJoule (LMJ), a 176-beam laser facility developed by CEA, is located at the CEA CESTA site near Bordeaux. The LMJ facility is part of the French Simulation Program, which combines improvement of theoretical models and data used in various fields of physics, high performance numerical simulations and experimental validation. It is designed to deliver about 1.4 MJ of energy on targets, for high energy density physics experiments, including fusion experiments. With 120 operational beams at the end of 2023, operational capabilities are gradually increasing until the full completion of the LMJ facility by 2025. To verify the synchronization of the precise delay generators, used on each bundle, a new timing diagnostic has been designed to observe the 1w and 3w fiducial signals. Meanwhile, due to electronic obsolescence, a new modified prototype precise of a delay generator, with ’new and old channels’, has been tested and compared. In this paper, a review of the LMJ synchronization report is given with a description of the first timing diagnostic as well as an overview of the LMJ delay generator obsolescence update. It also presents some leads for a future timing system.
LMJ: Laser MegaJoule
CEA: Commissariat à l’Energie Atomique et aux Energies Alternatives

Poster THPDP012 [3.535 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-THPDP012

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Received ※ 10 October 2023 — Revised ※ 14 November 2023 — Accepted ※ 19 December 2023 — Issued ※ 21 December 2023

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THPDP016

Full Stack Performance Optimizations for FAIR Operation

controls, operation, hardware, storage-ring

1325

A. Schaller, H.C. Hüther, R. Mueller, A. Walter
GSI, Darmstadt, Germany

In the last beam times, operations reported a lack of performance and long waiting times when performing simple changes of the machines’ settings. To ensure performant operation of the future Facility for Antiproton and Ion Research (FAIR), the "Task Force Performance" (TFP) was formed in mid-2020, which aimed at optimizing all involved Control System components. Baseline measurements were recorded for different scenarios to compare and evaluate the steps taken by the TFP. These measurements contained data from all underlying systems, from hardware device data supply over network traffic up to user interface applications. Individual groups searched, detected and fixed performance bottlenecks in their components of the Control System stack, and the interfaces between these individual components were inspected as well. The findings are presented here.

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-THPDP016

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Received ※ 04 October 2023 — Revised ※ 29 November 2023 — Accepted ※ 13 December 2023 — Issued ※ 20 December 2023

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THPDP018

The Timing System for PETRA IV

controls, software, hardware, interface

1335

T. Wilksen, V. Andrei, K. Brede, H.T. Duhme, M. Fenner, U. Hurdelbrink, J.M. Jäger, H. Kay, H. Lippek, F. Ludwig, M. Pawelzik, S. Ruzin, H. Schlarb
DESY, Hamburg, Germany

At DESY, the PETRA III synchrotron light source upgrade towards a fourth-generation, low-emittance machine PETRA IV is being pursued. The realisation of the new machine requires a complete redesign of the timing system, as the beam quality and beam control requirements will change significantly. The new timing system must generate and distribute facility-wide precise clocks, trigger signals, trigger events and beam-synchronous information. The design of the main hardware components will be based on the MTCA.4 standard, which has become a well-established platform at DESY and successfully been in use with DESY FEL’s MTCA.4-based timing systems for almost a decade now. This paper presents and discusses the PETRA IV timing system overall concept and functionality and its hardware components development status.

Poster THPDP018 [1.259 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-THPDP018

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Received ※ 04 October 2023 — Revised ※ 12 October 2023 — Accepted ※ 16 October 2023 — Issued ※ 26 October 2023

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THPDP051

LLRF and Timing System Integration at ESS

LLRF, controls, cavity, MMI

1426

G.S. Fedel, A.A. Gorzawski, J.J. Jamróz, J.P.S. Martins, N. Milas, A.P. Persson, A.M. Svensson, R.H. Zeng
ESS, Lund, Sweden

The Low Level Radio Frequency (LLRF) system is an important part of a Spallation Source facility as ESS. LLRF is commonly used with many different setups depending on the aim: preparation, calibration, conditioning, commission and others. These different setups are strongly connected to another important system on accelerators: the Timing System. This proceeding presents how at ESS we implemented the integration between LLRF and Timing systems on the control system scope. The integration of these two systems provides different and important features as: allow different ways to trigger the RF system (synced or not to other systems), define how the RF output will be defined (based on the features of the expected beam), re-configure LLRF depending on the timing setup and more. This integration was developed on both ends, LLRF and timing, and is mostly concentrated on the control system layer based on EPICS. Dealing with the different scenarios, synchronicity and considering all the software, hardware and firmware involved are some of the challenges of this integration. The result of this work was used during the ESS accelerator commissioning in 2022 and will be used on next ESS accelerator commissioning in 2023.

Poster THPDP051 [0.993 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-THPDP051

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Received ※ 05 October 2023 — Accepted ※ 08 December 2023 — Issued ※ 12 December 2023

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THPDP052

Characterizing Motion Control Systems to Enable Accurate Continuous and Event-Based Scans

laser, controls, PLC, neutron

1431

J.E. Petersson, T. Bögershausen, N. Holmberg, M. Olsson, T.S. Richter, F. Rojas
ESS, Lund, Sweden

The European Spallation Source (ESS) is adopting innovative data acquisition and analysis methods using global timestamping for neutron scattering research. This study characterises the timing accuracy and reliability of the instrument control system by examining an integrated motion and fast detection system. We designed an experimental apparatus featuring a motion axis controlled by a Beckhoff programmable logic controller (PLC) using TwinCAT 3 software. The encoder readback is timestamped in the PLC, which is time-synchronised with the ESS master clock via a Microresearch Finland event receiver (EVR) using Precision Time Protocol (PTP). We repeatedly scanned the motor between known positions at different speeds. The system was characterised by correlating the position and timestamp recorded by the PLC with independent information using a fast optical position sensor read out directly by the MRF system. The findings of this study provide a good benchmark for the upcoming experiments in neutron scattering research at ESS and should be interesting for those aiming to build similar setups.

Poster THPDP052 [1.185 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-THPDP052

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Received ※ 05 October 2023 — Accepted ※ 08 December 2023 — Issued ※ 12 December 2023

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THPDP057

SPS Beam Dump Enhancements on Tracking and Synchronization

injection, kicker, controls, operation

1444

N. Voumard, N. Magnin, P. Van Trappen
European Organization for Nuclear Research (CERN), Geneva, Switzerland

During Long Shutdown 2 (LS2) at CERN, the SPS Beam Dumping System (SBDS) was completely renovated and relocated to SPS Point 5. This allowed to deploy at the SPS the Beam Energy Tracking System (BETS) and the Trigger Synchronization Unit (TSU), initially designed for and operational at the LHC Beam Dumping System (LBDS). The challenge encountered in this migration was the dynamic multi-cycle operation scheme with fast ramping cycles of the SPS in comparison to the long physics periods at stable energy of the LHC. This paper describes the modification of both BETS and TSU systems as well as the automatic arming sequence put in place, including the interactions with the SPS injection, the beam revolution frequency, and the Beam Interlock System (BIS).

Poster THPDP057 [0.490 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-THPDP057

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Received ※ 05 October 2023 — Revised ※ 26 October 2023 — Accepted ※ 08 December 2023 — Issued ※ 12 December 2023

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THPDP080

Gateware and Software for ALS-U Instrumentation

controls, hardware, software, FPGA

1536

L.M. Russo, A. Amodio, M.J. Chin, W.E. Norum, K.S. Penney, G.J. Portmann, J.M. Weber
LBNL, Berkeley, California, USA

Funding: Work supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.
The Advanced Light Source Upgrade (ALS-U) is a diffraction-limited light source upgrade project under development at the Lawrence Berkeley National Laboratory. The Instrumentation team is responsible for developing hardware, gateware, embedded software and control system integration for diagnostics projects, including Beam Position Monitor (BPM), Fast Orbit Feedback (FOFB), High Speed Digitizer (HSD), Beam Current Monitor (BCM), as well as Fast Machine Protection System (FMPS) and Timing. This paper describes the gateware and software approach to these projects, its challenges, tests and integration plans for the novel accumulation and storage rings and transfer lines.

Poster THPDP080 [4.586 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-THPDP080

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Received ※ 04 October 2023 — Revised ※ 27 October 2023 — Accepted ※ 08 December 2023 — Issued ※ 15 December 2023

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THPDP085

LANSCE’s Timing System Status and Future Plans

controls, hardware, distributed, operation

1547

L.E. Walker, B.C. Atencio, S.A. Baily, D. Fratantonio, C.D. Hatch, M. Pieck, T. Ramakrishnan
LANL, Los Alamos, New Mexico, USA

Funding: This work was supported by the U.S. DOE through the Los Alamos National Laboratory (LANL). LANL is operated by Triad National Security, LLC, for the NNSA of U.S. DOE - Contract No. 89233218CNA000001
The Los Alamos Neutron Science Center (LANSCE) operates at a maximum repetition rate of 120 Hz. Timing gates are required for synchronization of the accelerator to provide beam acceleration along the LINAC and beam distribution to the five experimental areas. They are also provided to other devices with sensitive operating points relative to the machine cycle. Over the last 50 years of operations many new time sensitive pieces of equipment have been added. This has changed the demand on, and complexity of, the timing system. Further driven by equipment obsolescence issues, the timing system un-derwent many upgrades and revitalization efforts, with the most significant deployment starting in 2016. Due to these upgrade efforts, the timing system architecture design changed from a purely centralized system, to a distributed event-based one. The purpose of this paper is to detail the current state of the timing system, as a hy-brid system with the gate events being generated from a new timing master system, while still utilizing legacy distribution and fanout systems. Upgrades to the distribu-tion system are planned, but due to the required beam delivery schedule, they can only be deployed in sections during four-month annual maintenance cycles. The paper will also cover the off-the-shelf solutions that have been found for standardization, and the efforts towards a life cycle management process.
LA-UR-23-31123

Poster THPDP085 [3.311 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-THPDP085

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Received ※ 29 September 2023 — Revised ※ 11 October 2023 — Accepted ※ 06 December 2023 — Issued ※ 13 December 2023

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FR1BCO01

Status of the European Spallation Source Controls

EPICS, controls, PLC, operation

1600

T. Korhonen
ESS, Lund, Sweden

The European Spallation Source has made substantial progress in the recent years. Similarly, the control system has taken shape and has gone through the first commissioning and is now in production use. While there are still features and services in preparation, the central features are already in place. The talk will give an overview of the areas where the control system is used, our use and experience with the central technologies like MTCA.4 and EPICS 7, plus an overview of the next steps. The talk will also look at what was planned and reported in ICALEPCS 2015 and how our system of today compares with them, and the evolution from green field project to an operating organization.

Slides FR1BCO01 [2.354 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-FR1BCO01

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Received ※ 06 October 2023 — Revised ※ 12 October 2023 — Accepted ※ 12 December 2023 — Issued ※ 15 December 2023

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