Run Planning Meeting Notes, June 16 - June 22, 2022

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

MCC whiteboard

Hall D counting room white board

Spreadsheet with list of runs


Wednesday June 22

  1. Last 24h:
  2. Shift Summaries
  3. Reports
  4. Issues
    • Tagger NMR
    • DIRC sensor
    • DAQ livetime
    • Beam position stability
    • U1-10-TOP MPOD crate
  5. Plans
    • AC locks parameter tuning
    • PS and TAGH HV scans
    • Accelerator maintenance day Thursday. Lab wide power shedding event from 2pm to 3pm. Beam down at 6:30am. South Linac in restricted access by 8-9am.
    • Wed evening: The target is out already. Sasha will set up the straight track trigger, then start the TAC run at whatever beam current was chosen earlier.
  6. Commissioning steps temporarily postponed:
    • Flux optimization/Act .Col. calibration
    • Bleed-through test: measure bleed-through with A slit as usual and A slit completely closed to see whether using B slit would help.

Tuesday June 21

  1. Last 24h:
  2. Reports
  3. Issues
  4. Plans
    • RF recovery Tuesday and machine tuning for Hall C high current.
      • Change F1TDCs in Tagger that may be causing live time issues.
      • Install helicity fibers in Tagger
      • Change HV crate in tagger that is causing issues.
    • Accelerator maintenance day Thursday
  5. Commissioning steps temporarily postponed:
    • Flux optimization/Act .Col. calibration
    • 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.


Monday June 20

  1. Last 24h:
  2. Reports
  3. Issues
    • Beam position is unstable
    • DAQ live time fluctuations. [4] Tagger access tuesday to look at this.
    • 24 tagger channels off. Tagger access tuesday to look at this.
  4. Plans
    • RF recovery Tuesday and machine tuning for Hall C high current.
      • Change F1TDCs in Tagger that may be causing live time issues.
      • Install helicity fibers in Tagger
      • Change HV crate in tagger that is causing issues.
    • Accelerator maintenance day Thursday
  5. Commissioning steps temporarily postponed:
    • Flux optimization/Act .Col. calibration
    • 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.


Sunday June 19

  1. Last 24h:
  2. Reports
  3. Issues
  4. Plans
    • Flux optimization/Act .Col. calibration
    • RF recovery Tuesday
    • Accelerator maintenance day Thursday
  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.

Saturday June 18

  1. Last 24h:
  2. Reports
    • From PD-RC 8:45 meeting.
      • Generally everyone is somewhat unhappy. :-(
    • CPP dEdx issues. CDC is likely fine. Its gain and hit efficiency (hits found/hits measured) are normal. But tracking is missing the start counter, & the target isn't in the usual spot.
  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
  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.


Friday June 17

  1. Last 24h:
    • Tagger voltage alarms
    • Beam returned at 11 pm.
    • Harp scans performed [7][8][9]
    • Beam envelope looks good Accelerator have asked us to put these projections in the elog in future.
    • No CH edge observed. Hovanes helped to get diamond aligned overnight. [10]
    • Ran quasi production for NPP. Pressure change CDC alarm twice.
  2. Reports
    • From PD-RC 7:45 meeting.
      • Hall C not getting high current, more work is needed
      • Hall B will need a spin dance
    • Low rates in TOF [11] and low current in CDC [12]
    • 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
  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
  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