Difference between revisions of "Run Group M"
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== <font color=blue> Known Issues </font> == | == <font color=blue> Known Issues </font> == | ||
− | * | + | * RICH FPGA temperatures can show 1-2 yellow tiles, means the temperature is slightly above 70. Thats OK! |
− | * If any weird stripes appear in the DC occupancy plots, call Sergey. This is a known problem. | + | * If any weird stripes appear in the '''DC''' occupancy plots, call Sergey. This is a known problem. |
− | * In case of loss of communication with IOCBTARG, follow instructions at https://logbooks.jlab.org/entry/3502218 | + | * '''ECAL''' HV SEC2_WI_E36 is known to be problematic. Channel stays off for now. |
+ | |||
+ | * In case of loss of communication with '''IOCBTARG''', follow instructions at https://logbooks.jlab.org/entry/3502218 | ||
** Check that no unnecessary beamline-related screens are open. This includes particularly the big beamline overview screen, but also and any motor/harp/collimator screens, and IOC health screens. | ** Check that no unnecessary beamline-related screens are open. This includes particularly the big beamline overview screen, but also and any motor/harp/collimator screens, and IOC health screens. | ||
− | * The error messages " ERR: Event ..." for crates tdcband1, tdcecal1 and tdcecal6 are NOT a problem | + | * The error messages " ERR: Event ..." for '''crates''' tdcband1, tdcecal1 and tdcecal6 are NOT a problem |
<!-- * With any issue contact On-Call Experts or RC - do not spend more than 15-20 min trying to fix the problem. | <!-- * With any issue contact On-Call Experts or RC - do not spend more than 15-20 min trying to fix the problem. |
Revision as of 13:26, 28 January 2022
- Shift Documentation
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Shift ScheduleESAD, COO, RSADShift ChecklistHot CheckoutBeam Time Accounting
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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.
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- 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 28 - Jan 30 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.
- Running on Ar, with 22nA (determined by DC HV/current trips), (at least until Saturday)
- done:
- Beam blocker calibration is done but not uploaded. We can run and are running this without beam blocker.
- 2 production runs at 22 nA (these runs with configuration PROD67_PIN_noVTPread): runs 15743 and 15745
- Low luminosity run on LAr: 5nA and 10nA (how long?)
- done: run 15747 at 5 nA is 24min (stopped when TORUS ramped down)
- Switch to C target (for about 2 shifts)
- Check with Bob Miller if we can take data while target is being purged from Ar ->
- Take C data while purging ? Or "empty" target run?
- Sunday afternoon switch to LH2
- 1 shift LH2
- Beam blocker calibration (during day, call Rafo)
- During Monday owl: 4 hours empty target
- Monday pass change (6GeV beam)
- 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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In case of other questions or uncertainties of what to do, call the RC or PDL (remote) shift worker: see dedicated Remote Shifts tab above. |
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