BLTWG Meeting 3/27/2017

Organization

• Time: 11:30 EDT
• Connecting: detailed instructions are here
  • H.323 ip address: 199.48.152.152
  • web browser: https://bluejeans.com/536076821
  • phone: 408-740-7256 or 888-240-2560
• Conference id: 536076821
• Present:

Agenda

1. Announcements
2. Publication of the TPOL NIM article - Michael D.
3. Means for improved control of TPOL systematics - discussion
   • ring-segmented readout
   • hi-res photographs of the mounted silicon detector
   • Zygo thickness profiles of the converter target
   • DAQ improvements for high-rate running (1-2 uA?)
   • second thin converter (non-Be) for comparison
4. Means for improved control of photon beam flux systematics - discussion
   • design of a new 1e-6 radiator
   • fast/slow beam raster
   • high-rate PS triggers (1e8/s in tagged peak)
   • investigation of satellite peaks seen by the profiler
5. Status of PARA/PERP polarization and flux differences - Richard J.
6. Status of new CB spectrum and polarization calculation - Richard J.
7. Update on calibrations - anyone
8. Progress toward a unified beam energy scale
9. HDGeant4-based e-beam + tagger simulation
10. NIM articles in preparation
11. Any other business

Notes

1. TPOL upgrade plan