Revision as of 08:12, 17 June 2022

Meeting are via ZoomGov: connect (Meeting ID: 160 199 0060 / Passcode 8394)

MCC whiteboard

Hall D counting room white board

Friday June 17

1. Last 24h:
   • Tagger voltage alarms
     • Nick changed card and slot again. Same issue. He set the max voltage to 1100 V so an overvoltage is less serious. The next step is to change the crate which would take a shift and need 2 people.
     • Hovanes turned counters off
   • Beam returned at 11 pm.
   • Harp scans performed [1][2][3]
   • Beam envelope looks good
   • No CH edge observed. Hovanes helped to get diamond aligned overnight.
   • Ran quasi production for NPP. Pressure change CDC alarm twice.
2. Reports
   • From PD-RC 7:45 meeting.
   • Spreadsheet with list of runs
3. Issues
   • 24 tagger channels off
4. Plans
   • Flux optimization/Act .Col. calibration
   • Trigger development for TOF trigger
   • RF recovery Tuesday
   • Accelerator maintenance day Thursday
   • Trigger development for TOF trigger
5. Commissioning steps temporarily postponed:
   • PS and TAGH HV scans
   • Bleed-through test: measure bleed-through with A slit as usual and A slit completely closed to see whether using B slit would help.

Thursday June 16

1. Last 24h:
   • No beam since last meeting
   • Still getting tagger voltage alarms (should we just turn those counters off?)
2. Reports
   • From PD-RC 7:45 meeting.
     • Beam will be gone until Swing Shift at least
   • Spreadsheet with list of runs
3. Issues
   • High trigger rate in CTOF
     • MWPC #6 window cover removed. If successful, great. Otherwise, attempt to move helium bag downstream.
4. Plans:
5. Upcoming Items:
   • PS and TAGH HV scans
   • Bleed-through test: measure bleed-through with A slit as usual and A slit completely closed to see whether using B slit would help.
   • Tagger Access:
     • Change HV crate (Nick, Chris)
     • Install helicity fibers and connect to DAQ