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  OPERATION-2023 logbook, Contact: F.Wolff-Fabris, A.Galler, L.Samoylova, H.Sinn  Not logged in ELOG logo
Message ID: 149     Entry time: 21 Apr 2023, 04:13
Author: Robert Carley 
Group: SCS 
Subject: Night shift summary 20-21.04.2023 

Activities:

  • Investigated SAXS scattering instability and found it to come from the pointing variation of the PPL
  • Recorded microscope images of the PPL spot of the pBN to quantify the pointing for different spot sizes
  • Enlarged the beam and measured pumped SAXS. Results seem better than before.

Problems:

  • PPL pointing is not stable enough for consistent pumping effect in the probed area.
  • Sample scanner x motor went into error due to interaction with the magnet and had to be coaxed back into operation.
  • FEL down with cryo problem.
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