Difference between revisions of "Run Planning Meeting Notes, June 16 - June 22, 2022"
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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= | ||
+ | |||
+ | #Last 24h: | ||
+ | #* [https://logbooks.jlab.org/entry/4003805 Live time now being written to epics archiver.] | ||
+ | #*[https://logbooks.jlab.org/entry/4003882 Downstream beam pipe was moved.] Opportunistic. | ||
+ | #*[https://logbooks.jlab.org/entry/4003929 Tagger NMR lost lock] | ||
+ | #*[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. | ||
+ | #*[https://logbooks.jlab.org/entry/4004013 Hovanes attempted AC scan but beam was not locking] | ||
+ | #*Ran quasi production for NPP and maybe CPP. | ||
+ | #Reports | ||
+ | #*From PD-RC 8:45 meeting. | ||
+ | #**Hall C not getting high current, more work is needed | ||
+ | #**Hall B will need a spin dance | ||
+ | #*[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. | ||
+ | #Issues | ||
+ | #*24 tagger channels off. | ||
+ | #Plans | ||
+ | #*Flux optimization/Act .Col. calibration | ||
+ | #*Trigger development for TOF trigger | ||
+ | #*RF recovery Tuesday | ||
+ | #*Accelerator maintenance day Thursday | ||
+ | #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. | ||
Revision as of 08:40, 18 June 2022
Meeting are via ZoomGov: connect (Meeting ID: 160 199 0060 / Passcode 8394)
Hall D counting room white board
Saturday June 18
- Last 24h:
- Live time now being written to epics archiver.
- Downstream beam pipe was moved. Opportunistic.
- Tagger NMR lost lock
- Sasha addeed TOF to triggerRates were very high. Pre-scale by 2 and thresholds raised but timing not complete yet.
- Hovanes attempted AC scan but beam was not locking
- Ran quasi production for NPP and maybe CPP.
- 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.
- From PD-RC 8:45 meeting.
- Issues
- 24 tagger channels off.
- Plans
- Flux optimization/Act .Col. calibration
- Trigger development for TOF trigger
- RF recovery Tuesday
- Accelerator maintenance day Thursday
- 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
- 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 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.
- Tagger voltage alarms
- 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
- From PD-RC 7:45 meeting.
- Issues
- 24 tagger channels off
- Plans
- Flux optimization/Act .Col. calibration
- Trigger development for TOF trigger
- RF recovery Tuesday
- Accelerator maintenance day Thursday
- 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
- Last 24h:
- No beam since last meeting
- Still getting tagger voltage alarms (should we just turn those counters off?)
- Reports
- From PD-RC 7:45 meeting.
- Beam will be gone until Swing Shift at least
- Spreadsheet with list of runs
- From PD-RC 7:45 meeting.
- Issues
- High trigger rate in CTOF
- MWPC #6 window cover removed. If successful, great. Otherwise, attempt to move helium bag downstream.
- High trigger rate in CTOF
- Plans:
- 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