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  Joint Operation and Readiness Logbook, Contact: T.Haas, A. Violante, G. Wellenreuther  Not logged in ELOG logo
Message ID: 423     Entry time: 20 Nov 2017, 10:21
Author: Tobias Haas 
Location: General 
Severity: Information 
Subject: Status after 0930 meeting 

General

  • Intensity and availability of beam was good over the weekend
  • Large drifts and jitter were observed that are significantly higher than previously
  • Beam has two horizontal lobes as if it is too large for the mirrors

Instruments

  • SPB:
    • Many tasks were achieved during the weekend, e. g. instrument alignment, detector calibration
    • Issue with encoders whose cables are close to motor cables persists. These encoders are being disabled
    • Rotational SmarACT stages still do not work and are needed for this week's user experiment
  • FXE
    • At shift start on Saturday after reloading beam parameters there was no beam in the hutch.
    • Beam had to be brought back by hand. This was a large effort
    • This situation did not repeat on Sunday
    • LPD detector had problems: Only one super module correctly recorded data. Comment from S. Hauf: FXE should have called the detector expert
    • PP laser synchronisation does not work properly yet: Increments when adjusting timing are too coarse. Scan range is limited to 18ns

Detector

  • Detector group was not informed about the LPD issues in FXE. 
  • AGIPD calibrations were successfully taken on Sunday

ITDM

  • Still work is needed for slow data DAQ
  • DAQ behaves differently in SPB and FXE. In FXE it appears overloaded and in SPB it works fine
  • Comment from CAS: 
    • Many changes were made in the KARABO framework to allow asynchronous operation
    • These changes have to be also pulled through to DAQ. This will only be done during the winter shutdown
    • Until then, DAQ is very vulnerable to any delay in the system

CAS

  • No further comments

AE

  • Currently working on problems with rotational stages in SPB

 

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