Attendance:


Presentation:

Agenda/Notes:


  1.  Nov beamtime (ePixUHR Or ePixM+ePix10k 2M):
    • Beamtime prep, Status:
      1. ePixUHR deplyed at MFX beam dump yesterday
        •  
    • Detector setup move to the primary beam table
              Thur 7th of November, from 11 am to 1 pm
    • Keithley Souremeter for HV 
    • Tid Source meter?  
      • Existing sensors have high leakage... run at +20V
    • Test the script for the beamtime data collection;
          Timing scan:  TTL output for ACQ window.  Needs testing.  12us ACQ window width.  R0=12us also.  
          How do we vary the CompEn?  Register exposed in DAQ.  Intensity scan at different compen.  Enable and Setting of compen window.  Vary window width. 
          How do we change gain?  8 gain modes   Register exposed in DAQ.

    • Data analysis during the beamtime

      • Training?   Scripts appear to be ready.   
    • Other epixUHR info:
      1. Run at 15C   
      2. Put in dry air just in case.  
      3. Temp sensors exist, but not read out in realtime.  We'll need this eventually.   
    • Get the measurement plan (Zongde)
      • ePixUHR: Timing scan, Dark data, Low flux, Linearity scan at different gains.  
      • ePixM:   vary the ACQ window  + ePix10k 2M recalibration (LCLS1 daq)
        • 2 shifts worth of run plan for both epixUHR and epixM (and epix10k2m). (Zongde) 
    • Schedule the staffing (Zongde);
      • Two-person hutch searching  required.
      • Poll in the Slack channel. 
    • Anything else?
    • Stuff to look at:
      • Timing scan
      • Linearity scan.
      • Dependence of linearity, noise, pedestal vs daq/run trigger rates? 
      • Persistence (ghosting) check.  
      • noise and pedestal stability over pixels (ignore, known issue).
      • noise and pedestal stability over time
      • noise distribution is Poisson?  DNL issues?  









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