Thursday, September 29, 2016, 10:00am EDT - Compton

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1. Dial Toll-Free Number: 1-888-240-2560 (U.S. & Canada)
2. International participants dial:
Toll Number: 1-408-740-7256
3. Enter meeting ID:140287970

Desktop sharing: 


Meeting room=F228 in Cebaf Center


  • Ole is getting serious about turning off compton-old
    • I've copied some stuff to /home/compton/compton_old on the new machine
    • Check and see if there's anything I've missed that you think is important (Alexandre...)
    • VNC and StripTool now working
  • Simulation: unified GEANT4-based Monte Carlo update
  • Alignment was done last week. Laser table was several mm low --> likely due to replacement of laser table leg valve.


  • Removed 5 W fiber amplifier and handed off to Shukui (Injector group) - he says it's working "fine," but hasn't looked at it with fast photo diode
  • Installed 30 W amp
    • Polarization direction found
    • Producing 1-1.1 W at nominal 5 W out of fiber amp (similar to what we were getting before when things were working well).
    • Not yet able to lock - tried to reproduce configuration and settings from previous running; no luck. Perhaps PZT response different for this seed laser?

Photon Detector

  • Detector installation
    • Update from Juan Carlos and Abel

Electron detector

  • Detector in Hall
    • FSD and "photon stopper" valve: need to test masking
    • Measured noise still ~ 20 mV. Too large
  • QWAD tests: JLab (Hoskins/Camsonne)
  • QWAD tests: Manitoba