Difference between revisions of "Run Group M"
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* Follow the [[https://wiki.jlab.org/clas12-run/index.php/Run_Group_M#Short_Term_Schedule Short Term Schedule]] as outlined by RC | * Follow the [[https://wiki.jlab.org/clas12-run/index.php/Run_Group_M#Short_Term_Schedule Short Term Schedule]] as outlined by RC | ||
** includes Run Plan, DAQ configuration, and References and Standards | ** includes Run Plan, DAQ configuration, and References and Standards | ||
| + | * Keep '''shift summary''' up to date in HBLOG. Record all that happens. | ||
* If any concern about beam stability, ask MCC if orbit locks are on (they should be). | * If any concern about beam stability, ask MCC if orbit locks are on (they should be). | ||
| − | |||
* Document any beam condition change and send scaler GUIs to HBLOG | * Document any beam condition change and send scaler GUIs to HBLOG | ||
| − | * '''Cycle the FMT gas once per shift''', in-between runs. If it is not reset, the interlock may drop and disable the HV. | + | * '''Cycle the FMT gas once per shift''', in-between runs. Pease log in shift summary. If it is not reset, the interlock may drop and disable the HV. |
** Turning off and on the gas flow without pausing to avoid HV trips. If the HV tripped, make sure that once gas flow is restarted and the flow differential is down to reasonable values, to turn the FMT HV back on and let it ramp all the way up. Remember that this experiment is only using 3 FMT layers, not 6. | ** Turning off and on the gas flow without pausing to avoid HV trips. If the HV tripped, make sure that once gas flow is restarted and the flow differential is down to reasonable values, to turn the FMT HV back on and let it ramp all the way up. Remember that this experiment is only using 3 FMT layers, not 6. | ||
| − | * Do a '''RICH recovery''' (press the RICH Recovery button on the GUI) once daily during the day shift between runs. | + | * Do a '''RICH recovery''' (press the RICH Recovery button on the GUI) once daily during the day shift between runs.Please log in shift summary. |
* [https://bta.acc.jlab.org Fill out BTA] hourly. Click "Load from EPICS" to automatically fill the left side then correct as needed. | * [https://bta.acc.jlab.org Fill out BTA] hourly. Click "Load from EPICS" to automatically fill the left side then correct as needed. | ||
** Accelerator beam time: | ** Accelerator beam time: | ||
Revision as of 12:44, 30 January 2022
[edit]
- Shift Documentation
- Phone Numbers
- Short Term Schedule
- Notes/Known Issues
- Shift Expert
- Remote Worker Shift
- Monitoring
- Useful Links
Shift ScheduleESAD, COO, RSADShift ChecklistHot CheckoutBeam Time Accounting
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Manuals |
Procedures |
JLab Logbooks
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If calling local numbers (with area code prefix 757) from the counting room dial 9+[last 7 digits]. To call other area codes dial 91+[ten digit number]
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- Note, all non-JLab numbers must be dialed with an area code. When calling from a counting-house landline, dial "9" first.
- To call JLab phones from outside the lab, all 4-digit numbers must be preceded by 757-269
- Click Here to edit Phone Numbers. Note, you then also have to edit the current page to force a refresh.
Click Here to edit Phone Numbers. Note, you then also have to edit the current page to force a refresh.
CLAS12 Run Group M, Fall 2021
Beam energies: 2.1, 4.0, 6.0 GeV (1.96 GeV/pass)
RC: Sebastian Kuhn
- Sebastian Kuhn (757) 639-6640, kuhn@jlab.org
- 9 575 7540 from Counting Room
PDL: Valery Kubarovsky
- (757) 876-1789
- 9 876-1789 from Counting Room
- vpk@jlab.org
Jan 27 - 29, 2022
4GeV 22nA on LAr
Run Plan: Jan 29 - Jan 31, 2022
Production runs use PROD67_noVTPread and the trigger rgm_6GeV_inb_v1_0.trg .
Run duration 100M events or 4 hours, whichever comes first.
- LAr target is empty, cell stays in position
- Carbon target (single foil 2 mm) is IN
- Beam blocker IN
- FC calibration for C target is loaded
- Running with 90 nA
- Sunday Empty target run
- Put beam blocker IN
- FC calibration (4GeV) to be done
- Take 2-3 hours of empty target runs (100-150 nA)
- Monday pass change (6GeV beam)
- Need to establish quality beam, repeat beam centering, beam blocker calibration.
- OUTLOOK: Run on Ar, Sn and C with 6 GeV beam
DAQ configuration
PROD67_noVTPread , production trigger rgm_6GeV_inb_v1_0.trg .
At the end of each run, follow the STANDARD DAQ RESTART SEQUENCE
- "end run", if the run ended correctly then: "prestart", "go"
- if the run did not end correctly or if any ROCs had to be rebooted:
- "cancel", "reset"
- "configure", "download", "prestart", "go"
- After each step, make sure it is completed in the Run Control message window. If a ROC has crashed, find which one it is, issue a roc_reboot command ON JUST THAT ROC and try again. Contact the DAQ expert if there are any questions.
References and Standards
(last update 01/18/2022- 23:30)
Nominal Beam Positions
- 2H01, X: -0.6 mm, Y: 0.8 mm
- 2C24, X: -2.0 mm, Y: +0.6 mm
FSD Thresholds
- Upstream: 2000 Hz
- Midstream: 2000 Hz
- Downstream: 500000 Hz
- BOM: 10000
- 5 ms dwell time
Reference Harp Scans for Beam on Faraday Cup: 2H01 [1]
Reference Harp Scans for Beam on Tagger dump: 2C21 [2], tagger harp [3]
Reference Monitoring Histograms (6 nA, production C) [4] Old reference Monitoring Histograms (50 nA, production LD2) [5]
Counter rates
- Upstream counters integrated rates: 0-15 Hz (acceptable up to 100 Hz are acceptable) @50 nA.
- Midstream counters: 10-20 Hz (acceptable up to 50 Hz) @50 nA.
- Counting rates of ~ hundreds of Hz may indicate bad beam tune or bleed-through from other Halls.
Beamline vacuum: should be not higher than 5e-5.
Notes
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Known Issues
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(remote) shift worker: see dedicated Remote Shifts tab above. |
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TasksEvery Run:
Every Shift:
Regularly:
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Webcams
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Manuals |
Hall Webcams |
Epics on the web
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Live Monitoring Links
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Hall-B
Run lists |
AcceleratorReferences |
ZOOM meetings
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