Difference between revisions of "Run Group M"
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<!--####################################### Notes/Known Issues ################################################--> | <!--####################################### Notes/Known Issues ################################################--> | ||
| − | '''NOTE: BOTH the shift expert AND the shift worker MUST check monitoring histograms at least once every 30-60 minutes to make sure there are no major detector problems.''' | + | '''NOTE: BOTH the shift expert AND the shift worker MUST check monitoring histograms (mon12) at least once every 30-60 minutes to make sure there are no major detector problems.''' |
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== <font color=blue> Notes </font> == | == <font color=blue> Notes </font> == | ||
| − | # '''LTCC''' is NOT used in this experiment. HV should be kept OFF. | + | # Some plots in '''mon12''' have a '''choice of histogram sets per sector''', select buttons at the bottom of the plot. Only the currently selected set ends up in the logbook entry. |
| + | #* that means you have to '''look at all sectors for these histograms''' | ||
| + | #'''LTCC''' is NOT used in this experiment. HV should be kept OFF. | ||
# '''FMT''' only using 3 FMT layers, not 6. | # '''FMT''' only using 3 FMT layers, not 6. | ||
# The main lights in the Hall ('''dome lights''') and the Forward Carriage lights are being kept off because of light leaks affecting some of the detectors. If these lights are switched on during access, they should be switched off when leaving the Hall. Refer to these photos: | # The main lights in the Hall ('''dome lights''') and the Forward Carriage lights are being kept off because of light leaks affecting some of the detectors. If these lights are switched on during access, they should be switched off when leaving the Hall. Refer to these photos: | ||
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* '''DAQ''' when starting a run, it can happen that the live time alarm goes off, can be acknowledged | * '''DAQ''' when starting a run, it can happen that the live time alarm goes off, can be acknowledged | ||
* '''DAQ''' the trigger alarm goes off when the trigger rate is too small or too high or a sector is not triggering at all. If necessary, the shift expert can "Set All Normalized Rate Limits" at useful rates (not too low) | * '''DAQ''' the trigger alarm goes off when the trigger rate is too small or too high or a sector is not triggering at all. If necessary, the shift expert can "Set All Normalized Rate Limits" at useful rates (not too low) | ||
| − | * '''DAQ''' ROC rate tdcecal4 is double wrt the 5 | + | * '''DAQ''' ROC rate tdcecal4 is double wrt the 5 other sectors, https://logbooks.jlab.org/entry/3979286 |
* '''DAQ''' The error messages " ERR: event# ..." for crates tdcband1, tdcecal1 and tdcecal6 are NOT a problem | * '''DAQ''' The error messages " ERR: event# ..." for crates tdcband1, tdcecal1 and tdcecal6 are NOT a problem | ||
Revision as of 11:34, 1 February 2022
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- 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: Susan Schadmand and Sebastian Kuhn
- Susan Schadmand (757) 575-7540, susansch@jlab.org
- 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
Run Plan: 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.
- status: 6GeV beam, LAr target is full, Beam blocker is OUT
- running: 25nA LAr for 2 days
- next:
- single tin foil for 2 days
- Ca target
DAQ configuration
PROD67_noVTPread , production trigger rgm_6GeV_inb_v1_0.trg .
NOTE: UNLESS a RICH problem crashes the DAQ, do NOT interrupt an otherwise smooth run to do a RICH recovery - instead do this in between runs.
NOTE: BOTH the shift expert AND the shift worker MUST check monitoring histograms at least once every 30-60 minutes to make sure there are no major detector problems.
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.
NOTE: BOTH the shift expert AND the shift worker MUST check monitoring histograms (mon12) at least once every 30-60 minutes to make sure there are no major detector problems.
Notes
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Known Issues
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NOTE: BOTH the shift expert AND the shift worker MUST check monitoring histograms at least once every 30 - 60 minutes to make sure there are no major detector problems.
(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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