...
00:30 Talk to operator to get higher particle rate for latency scan. Open up slit had rather little effect in brining update but opening up collimator had more desired change to increase the beam spot from 2x2mm to covering about half of MIMOSA plane, and 80 pixel hits/MIMOSA (~50 ~40 particles).
00:35 LCLS primary experiment wants to change primary beam energy. Beam off temporarily, but will return for same 8 GeV secondary setup for ESTB.
00:55 Beam back. Beam spot as tuned and ~40 particles per pulse. Using this to scan latency.
0:55 Trigger 11 starting panel delay setting is -104500. Our RD53A DAQ widnow is 32 beam crossings = 800nsand a configured latency of 64. Stepping towards large delays (more -ve numbers) by 500ns steps. Didn't find it in this direction. Went the other way. Found it at trigger delay = -102010 which will put most data at tick=8.
1:30 Fine tuned RD53A DUT position Y+4mm, X+6mm to center the spot onto RD53a module. Saved histogram for Run 652.