Difference between revisions of "Run Group M"
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After each step, make sure it is complete in the Run Control message window. If a ROC has crashed, find which one it is and issue a roc_reboot command and try again. Contact the DAQ expert if there are any questions. | After each step, make sure it is complete in the Run Control message window. If a ROC has crashed, find which one it is and issue a roc_reboot command and try again. Contact the DAQ expert if there are any questions. | ||
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* Note 3: Do not turn OFF FTOF HVs, even during the beam tune with CW beam (turn off if tuned/pulsed beam in the upstream beamline) | * Note 3: Do not turn OFF FTOF HVs, even during the beam tune with CW beam (turn off if tuned/pulsed beam in the upstream beamline) | ||
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== <font color=blue>''' References and Standards:'''</font>== | == <font color=blue>''' References and Standards:'''</font>== | ||
− | ''(last update 12/ | + | ''(last update 12/14/2021- 22:10)'' |
<b> Nominal Beam Positions </b> | <b> Nominal Beam Positions </b> | ||
− | *2H01, X: -0. | + | *2H01, X: -0.6 mm, Y: -0.2 mm |
− | |||
*2C24, X: -2.0 mm, Y: +0.6 mm | *2C24, X: -2.0 mm, Y: +0.6 mm | ||
− | |||
<b> FSD Thresholds </b> | <b> FSD Thresholds </b> | ||
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* Downstream: 500000 Hz | * Downstream: 500000 Hz | ||
* BOM: 10000 | * BOM: 10000 | ||
+ | * 5 ms dwell time | ||
− | <b> Reference Harp Scans for Beam on Faraday Cup: </b> | + | <b> Reference Harp Scans for Beam on Faraday Cup: </b> 2H01 [https://logbooks.jlab.org/entry/3963256] |
− | <b> Reference Harp Scans for Beam on Tagger dump: </b> 2C21 [https://logbooks.jlab.org/entry/ | + | <b> Reference Harp Scans for Beam on Tagger dump: </b> 2C21 [https://logbooks.jlab.org/entry/3963244], tagger harp [https://logbooks.jlab.org/entry/3963250] |
<b> Reference Monitoring Histograms (80 nA, production Ca-48) </b> [https://logbooks.jlab.org/entry/3958508] | <b> Reference Monitoring Histograms (80 nA, production Ca-48) </b> [https://logbooks.jlab.org/entry/3958508] | ||
+ | <b> Old reference Monitoring Histograms (50 nA, production LD2) </b> [https://logbooks.jlab.org/entry/3943458] | ||
<b> Counter rates </b> | <b> Counter rates </b> |
Revision as of 22:17, 14 December 2021
Shift ScheduleESAD, COO, RSAD Read before shift!!!Shift 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+[10 digit number]
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CLAS12 Run Group M, Fall 2021
Beam energies: 2.1, 4.0, 6.0 GeV (1.96 GeV/pass)
Important: Document all your work in the logbook!
RC: Larry Weinstein
- (757) 575-7540
- 9 575 7540 from Counting Room
- weinstei@jlab.org
PDL: Eugene Pasyuk
- (757) 876-1789
- 9 876-1789 from Counting Room
- pasyuk@jlab.org
Run Plan: Dec 10 - Dec 14 2021
PROD67_noVTPread and the trigger rgm_6GeV_inb_v1_0.trg, Run duration should be no more than 100M events or 4 hours, whichever comes first.
Summary
- Tuesday day: install 2H target
- follow procedures to restore beam
- check DC occupancy at 50 nA
- check beam blocker calibration
- take data at 50 nA
- Friday 0730, switch to 4He target.
- follow procedures to restore beam
- check DC occupancy at 60 nA
- check beam blocker calibration
- take data at 60 nA
- take data until end of run
DAQ configurationPROD67_noVTPread , production trigger rgm_6GeV_inb_v1_0.trg At the end of each run, follow the STANDARD DAQ RESTART SEQUENCE
Announcements
The integrated rates on the upstream counters have to be in the range 0-15 Hz (rates up to 100 Hz are acceptable) and the rates on the midstream counters have to be in the range 10-20 Hz (acceptable up to 50 Hz) @50 nA. Counting rates in the range of hundreds of Hz may indicate a bad beam tune or bleed-through from other Halls.
References and Standards:(last update 12/14/2021- 22:10) Nominal Beam Positions
FSD Thresholds
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 (80 nA, production Ca-48) [4] Old reference Monitoring Histograms (50 nA, production LD2) [5] Counter rates
Beamline vacuum: should be not higher than 5e-5.
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