Difference between revisions of "Run Group M"
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* 9 876-1789 from Counting Room | * 9 876-1789 from Counting Room | ||
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+ | == <font color=blue>''' Run Plan: Dec 10 - Dec 14 2021 '''</font>== | ||
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+ | <b> PROD67_noVTPread </b> and the trigger <b>rgm_6GeV_inb_v1_0.trg</b>, Run duration should be no more than 100M events or 4 hours, whichever comes first. | ||
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+ | <b>Summary</b> | ||
+ | * Until Tuesday morning: running on Ca-40 at 150 nA | ||
+ | ** 1 hour 70 nA then 1 hour 110 nA for DC efficiency studies | ||
+ | * Tuesday, Dec. 14th, switch to 4He target. | ||
+ | ** 0730 call for restricted access, ramp down solenoid, turn off beam line HV | ||
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Revision as of 14:34, 13 December 2021
Shift ScheduleESAD, COO, RSAD Read before shift!!!Shift ChecklistHot CheckoutBeam Time Accounting
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Click Here to edit Phone Numbers. Note, you then also have to edit this page to force a refresh.
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: Valery Kubarovsky
- (757) 876-1789
- 9 876-1789 from Counting Room
- vpk@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
- Until Tuesday morning: running on Ca-40 at 150 nA
- 1 hour 70 nA then 1 hour 110 nA for DC efficiency studies
- Tuesday, Dec. 14th, switch to 4He target.
- 0730 call for restricted access, ramp down solenoid, turn off beam line HV
- Note 1: Be very mindful of the background rates in the halo counters, rates in the detectors, and currents in the SVT for all settings to ensure that they are at safe levels.
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.
- Note 2: Nominal beam positions: 2C24A (X=-2.0 mm, Y=0.6 mm) , 2H01 (X=-0.1 mm, Y=0.3 mm)
- 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 4: In case of a Torus and/or Solenoid Fast Dump do the following:
- Notify MCC to request beam OFF and to drop Hall B status to Power Permit
- Call Engineering on-call
- Make a separate log entry with copies to HBTORUS and HBSOLENOID logbooks. In the "Notify" field add Probir Goshal, Dave Kashy, and esr-users@jlab.org
- Notify Run Coordinator
- Turn off all detectors
- Note 5: When the beam is being delivered to the Faraday Cup:
- the Fast Shut Down elements: Upstream, Midstream, Downstream, BOM, and Solenoid should always be in the state UNMASKED
- No changes to the FSD threshold should be made without RC or beamline expert approval
- Note 6: Any request for a special run or change of configuration has to be approved by the RC & documented
- Note 7: * Fill out BTA hourly. Click "Load from EPICS" to automatically fill the left side then correct as needed.
- Note 8: Reset CLAS12MON frequently to avoid histogram saturation.
- Note 9: If crate ADCBAND was rebooted: Contact BAND expert and make a note in the HBBAND logbook and in HBLOG.
- Note 10: ECAL HV SEC2_WI_E36 is known to be problematic. Channel stays off for now.
- Note 11: LTCC is NOT used in this experiment. HV should be kept OFF.
- Note 12: If responding to RICH or Trigger alarms please post screens also to RICH or HBTRIGGER logbook, respectively.
- Note 13: Do a RICH recovery (press the RICH Recovery button on the GUI) once daily during the day shift between runs.
- Note 14: Cycle the FMT Gas once er shift. If done rapidly without pausing (Gas "stop"-"yes"-"start"-"yes"), the HV should not crash.
DAQ configurationPROD67_noVTPread , production trigger rgm_6GeV_inb_v1_0.trg At the end of each run, follow the STANDARD DAQ RESTART SEQUENCE
Announcements
References and Standards:(last update 12/06/2021- 23:20) Nominal Beam Positions
FSD Thresholds
Reference Harp Scans for Beam on Faraday Cup: 2C24 (tagger harp) [1], 2H01 [2] Reference Harp Scans for Beam on Tagger dump: 2C21 [3], 2C24 (tagger harp) [4] Reference Monitoring Histograms (80 nA, production Ca-48) [5] Counter rates
Beamline vacuum: should be not higher than 5e-5.
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