Difference between revisions of "Run Planning Meeting Notes, June 16 - June 22, 2022"

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(Friday June 17)
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[https://halldweb.jlab.org/online/whiteboard/ Hall D counting room white board]
 
[https://halldweb.jlab.org/online/whiteboard/ Hall D counting room white board]
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[https://docs.google.com/spreadsheets/d/1sdluzy7p5vnlhw9AWJHBrYbXKTBet45o4den4zWX9dc/edit#gid=1855021251 Spreadsheet with list of runs]
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=Saturday June 18=
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#Last 24h:
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#* [https://logbooks.jlab.org/entry/4003805 Live time now being written to epics archiver.]
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#*[https://logbooks.jlab.org/entry/4003882 Downstream beam pipe was moved.]  Opportunistic.
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#*[https://logbooks.jlab.org/entry/4003929 Tagger NMR lost lock]
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#*[https://logbooks.jlab.org/entry/4003987 Sasha addeed TOF to trigger][https://logbooks.jlab.org/entry/4003979 Rates were very high.]  Pre-scale by 2 and thresholds raised but timing not complete yet.
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#*[https://logbooks.jlab.org/entry/4004013 Hovanes attempted AC scan but beam was not locking]
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#*Ran quasi production for NPP and maybe CPP.
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#Reports
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#*From PD-RC 8:45 meeting.
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#**Hall C not getting high current, more work is needed
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#**Hall B will need a spin dance
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#*[https://logbooks.jlab.org/entry/4003932 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.
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#Issues
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#*24 tagger channels off.
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#Plans
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#*Flux optimization/Act .Col. calibration
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#*Trigger development for TOF trigger
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#*RF recovery Tuesday
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#*Accelerator maintenance day Thursday
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#Commissioning steps temporarily postponed:
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#*PS and TAGH HV scans
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#*Bleed-through test: measure bleed-through with A slit as usual and A slit completely closed to see whether using B slit would help.
  
  

Revision as of 07:40, 18 June 2022

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

Saturday June 18

  1. Last 24h:
  2. Reports
    • From PD-RC 8:45 meeting.
      • Hall C not getting high current, more work is needed
      • Hall B will need a spin dance
    • 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 [1][2][3]
    • 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. [4]
    • 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 [5] and low current in CDC [6]
    • 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