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  OPERATION-2023 logbook, Contact: F.Wolff-Fabris, A.Galler, L.Samoylova, H.Sinn  Not logged in ELOG logo
Message ID: 415     Entry time: 25 Oct 2023, 15:18
Author: Sergii, Teguh 
Group: SCS 
Subject: Morning Shift Summary, 25.10.2023 

Morning Shift Summary, 25.10.2023

Achievements:

  1. Re-aligned FEL beam pointing and beamline mirrors after XGM intensity drop due to slow beam pointing drift over night.
  2. Continued taking momentum-dependent tr-REXS data.

Problems:

  1. There was slow drift of FEL beam pointing over night, causing XGM intensity to slowly drop over time.
  2. The slow drop of XGM intensity continues even after beamline alignment. Compared to morning, the XGM intensity has dropped by ~10%.
  3. It is advisable to re-check the beam pointing again some time before the night shift due to correct for this beam drift problem.
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