Author: Alcocer, J.P.
Paper Title Page
TUPDP083 DAQ System Based on Tango, Sardana and PandABox for Millisecond Time Resolved Experiment at the CoSAXS Beamline of MAX IV Laboratory 713
 
  • V. Da Silva, B.N. Ahn, J.P. Alcocer, R. Appio, Á. Freitas, M. Lindberg, T.S. Plivelic, A.E. Terry
    MAX IV Laboratory, Lund University, Lund, Sweden
  
  CoSAXS is the Co­her­ent and Small Angle X-ray Scat­ter­ing (SAXS) beam­line placed at the dif­frac­tion-lim­ited 3 GeV stor­age ring at MAX IV Lab­o­ra­tory. The beam­line can de­liver a very high pho­ton flux ~1013 ph/s and it is equipped with state-of-the-art pixel de­tec­tors, suit­able for ex­per­i­ments with a high time-res­o­lu­tion to be per­formed. In this work we pre­sent the up­graded beam­line data ac­qui­si­tion strat­egy for a mil­lisec­ond time-re­solved SAXS/WAXS ex­per­i­ment, using laser light to in­duce tem­per­a­ture jumps or UV-ex­ci­ta­tion with the con­se­quent struc­tural changes on the sys­tem. In gen­eral terms, the beam­line con­trol sys­tem is based on TANGO and built on top of it, Sar­dana pro­vides an ad­vanced scan frame­work. In order to syn­chro­nize the laser light pulse on the sam­ple, the X-ray fast shut­ter open­ing time and the X-ray de­tec­tors read­out, hard­ware trig­gers are used. The im­ple­men­ta­tion is done using Pand­ABox, which gen­er­ates the pulse train for the laser and for all ac­tive ex­per­i­men­tal chan­nels, such as coun­ters and de­tec­tors, in syn­chro­niza­tion with the fast shut­ter open­ing time. Pand­ABox in­te­gra­tion is done with a Sar­dana Trig­ger Gate Con­troller, used to con­fig­ure the pulses pa­ra­me­ters as well to or­ches­trate the hard­ware trig­gers dur­ing a scan. This paper de­scribes the ex­per­i­ment or­ches­tra­tion, laser light syn­chro­niza­tion with mul­ti­ple X-ray de­tec­tor.  
poster icon Poster TUPDP083 [1.645 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-TUPDP083  
About • Received ※ 06 October 2023 — Accepted ※ 11 December 2023 — Issued ※ 13 December 2023  
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