Author: Gorzawski, A.A.
Paper Title Page
TUMBCMO12 Multi-Dimensional Spectrogram Application for Live Visualization and Manipulation of Large Waveforms 368
 
  • B.E. Bolling, A.A. Gorzawski, J. Peterson
    ESS, Lund, Sweden
  
  The Eu­ro­pean Spal­la­tion Source (ESS) is a re­search fa­cil­ity under con­struc­tion aim­ing to be the world’s most pow­er­ful pulsed neu­tron source. It is pow­ered by a com­plex par­ti­cle ac­cel­er­a­tor de­signed to pro­vide a 2.86 ms long pro­ton pulse at 2 GeV with a rep­e­ti­tion rate of 14 Hz. Pro­tons are ac­cel­er­ated via cav­ity fields through var­i­ous ac­cel­er­at­ing struc­tures that are pow­ered by Ra­dio-Fre­quency (RF) power. As the cav­ity fields may break down due to var­i­ous rea­sons, usu­ally post-mortem data of such events con­tain the in­for­ma­tion needed re­gard­ing the cause. In other events, the un­der­ly­ing cause may have been vis­i­ble on pre­vi­ous beam pulses be­fore the in­ter­lock trig­ger­ing event. The Multi-Di­men­sional Spec­tro­gram Ap­pli­ca­tion is de­signed to be able to col­lect, ma­nip­u­late and vi­su­al­ize large wave­forms at high rep­e­ti­tion rates, with the ESS goal being 14 Hz, for ex­am­ple cav­ity fields, show­ing oth­er­wise un­no­ticed tem­po­rary break­downs that may ex­plain the some­times-un­known rea­son for in­creased power (com­pen­sat­ing for those in­vis­i­ble tem­po­rary break­downs). The first phys­i­cal event that was recorded with the tool was quench­ing of a su­per­con­duct­ing RF cav­ity in real time in 3D. This paper de­scribes the ap­pli­ca­tion de­vel­oped using Python and the pure-python graph­ics and GUI li­brary PyQt­Graph and PyQt5 with Python-OpenGL bind­ings.  
slides icon Slides TUMBCMO12 [2.932 MB]  
poster icon Poster TUMBCMO12 [11.475 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-TUMBCMO12  
About • Received ※ 04 October 2023 — Accepted ※ 23 November 2023 — Issued ※ 23 November 2023  
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TUPDP081 The ESS Fast Beam Interlock System - Design, Deployment and Commissioning of the Normal Conducting Linac 704
 
  • S. Pavinato, M. Carroll, S. Gabourin, A.A. Gorzawski, A. Nordt
    ESS, Lund, Sweden
  
  The Eu­ro­pean Spal­la­tion Source (ESS) is a re­search fa­cil­ity based in Lund, Swe­den. Its linac will have an high peak cur­rent of 62.5 mA and long pulse length of 2.86 ms with a rep­e­ti­tion rate of 14 Hz. The Fast Beam In­ter­lock Sys­tem (FBIS), as core sys­tem of the Beam In­ter­lock Sys­tem at ESS, is a crit­i­cal sys­tem for en­sur­ing the safe and re­li­able op­er­a­tion of the ESS ma­chine. It is a mod­u­lar and dis­trib­uted sys­tem. FBIS will col­lect data from all rel­e­vant ac­cel­er­a­tor and tar­get sys­tems through ~300 di­rect in­puts and de­cides whether beam op­er­a­tion can start or must stop. The FBIS op­er­ates at high data speed and re­quires low-la­tency de­ci­sion-mak­ing ca­pa­bil­ity to avoid in­tro­duc­ing de­lays and to en­sure the pro­tec­tion of the ac­cel­er­a­tor. This is achieved through two main hard­ware blocks equipped with FPGA based boards: a mTCA ’De­ci­sion Logic Node’ (DLN), ex­e­cut­ing the pro­tec­tion logic and re­al­iz­ing in­ter­faces to Higher-Level Safety, Tim­ing and EPICS Con­trol Sys­tems. The sec­ond block, a cPCI form-fac­tor ’Sig­nal Con­di­tion Unit’ (SCU), im­ple­ments the in­ter­face be­tween FBIS in­puts/out­puts and DLNs. In this paper we pre­sent the im­ple­men­ta­tion of the FBIS con­trol sys­tem, the in­te­gra­tion of dif­fer­ent hard­ware and soft­ware com­po­nents and a sum­mary on its per­for­mance dur­ing the lat­est beam com­mis­sion­ing phase to DTL4 Fara­day Cup in 2023.  
poster icon Poster TUPDP081 [2.284 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-TUPDP081  
About • Received ※ 26 September 2023 — Accepted ※ 11 December 2023 — Issued ※ 16 December 2023  
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TUPDP094 EPICS NTTables for Machine Timing Configuration 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 icon 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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THPDP051 LLRF and Timing System Integration at ESS 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 icon 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  
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