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

pre>

• • • • • • • • • BLUEJEANS CALL-IN INSTRUCTIONS*********

---

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: https://bluejeans.com/140287970 </pre>

Agenda

Meeting room=F228 in Cebaf Center

General

• 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.

Laser

• 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