BLTWG Meeting 04/30/2018

Organization

• Time: 11:30 EDT
• JLab meeting room: A110
• 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: Ken L., Richard J., Elton S., Beni Z., Michael D., Stuart F., Mark D. Alex B., Alexandre D., Mark D., Sebastian C., and Curtis M., and Eugene C.

Agenda

1. Announcements
2. Updates on polarization studies
   • CB spectrum and polarization studies - Glasgow updated scan New request for Richard's simulation coming soon
   • Update on TPOL analysis - Sebastian
     • TPOL polarization comparison
     • 750 um Be running
   • New TPOL simulation datasets for analyzing power determination - Richard
   • TPOL fADC signal shaping test - Ken
   • Update on hadronic asymmetries - Justin, Alexander
3. Beam monitoring issues
   • TAC run lessons learned - Hovanes
     • beam stability stripchart
     • another beam stability stripchart
   • running with 750um converter - Sasha
   • electron beam focus impacts - Justin
     • 58 um diamond and 5 mm collimator FOM
     • 20 um diamond and 3.4 mm collimator FOM
   • progress with beam spot measurement using a fast raster
     • high-sensitivity search for 23 or 27 Hz motion in beam during fast raster period
     • time alignment within DAQ on active collimator readout
   • X-ray background shielding results - Alexandre
   • relative radiator thickness determination - Sasha

PS acceptance 750 um

PS acceptance 75um

1. Upcoming tests
   • run plan with thin diamond
   • test of fast raster
   • follow-up TAC runs
2. Any other business