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Message ID: 370     Entry time: 27 Sep 2023, 07:51
Author: Benjamin van Kuiken 
Group: SCS 
Subject: SCS Night Shift Summary 

Achievements

  • Characterized optical laser spot at sample

Problems

  • FEL beam had very unstable intensity and spectrum. As a result no useful data could be collected during the night
    • FEL pointing seemed to be stable on all tunnel imagers. The issue was communicated to BKR, and they said that things looked fine from there perspective.
    • Large fluctuations in spectral distrubtion at SCS spectrometer were observed. See video at https://syncandshare.xfel.eu/index.php/s/emtwonCsQJJqpz6
    • Oth-order beam on SCS pop-in showed large intensity fluctuations with ~50% of the time showing no beam at all
Attachment 1: SCSPopinOthOrder_270923.png  255 kB  | Show | Show all
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