Difference between revisions of "Run Group A"
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** Once beam to Faraday Cup is established, prepare to start data taking. Switch on all detectors with 5 nA beam; contact expert to switch on SVT. See [https://wiki.jlab.org/clas12-run/images/b/bf/MVT_for_Dummies.pdf MVT instructions]) --> | ** Once beam to Faraday Cup is established, prepare to start data taking. Switch on all detectors with 5 nA beam; contact expert to switch on SVT. See [https://wiki.jlab.org/clas12-run/images/b/bf/MVT_for_Dummies.pdf MVT instructions]) --> | ||
* There will be work on the machine this morning on Hall C and Hall A lines, RC called the PD who confirmed that the planned work should not affect our Hall B beamline | * There will be work on the machine this morning on Hall C and Hall A lines, RC called the PD who confirmed that the planned work should not affect our Hall B beamline | ||
| + | * Ask MCC to notify the Shift leader before beam delivery | ||
* When beam is back, ask first for low current 5 nA, check that the beam position and rates are Ok before moving to 15nA | * When beam is back, ask first for low current 5 nA, check that the beam position and rates are Ok before moving to 15nA | ||
* If beam quality is not good call beamline expert | * If beam quality is not good call beamline expert | ||
Revision as of 10:30, 8 February 2018
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Shift ScheduleShift ChecklistHot CheckoutBeam Time Accounting |
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JLab Logbooks
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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 this page to force a refresh.
CLAS12 Run Group A, Winter 2018
Beam energy 6.4 GeV (3 pass)
Important: Document all your work in the logbook!
Remember to fill in the run list at the beginning and end of each run (clas12run@gmail.com can fill the run list)
RC: Latifa Elouadrhiri
- (757) 575-7540
- 9 575 7540 from Counting Room
- latifa@jlab.org
PDL: Eugene Pasyuk
- (757) 876-1789
- 9 876-1789 from Counting Room
- pasyuk@jlab.org
- 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.
- Note 2: At the end of each run, follow the DAQ restart sequence "end run", "abort", "reset", "download", "prestart", "go". After DAQ prestart is complete reboot the scaler IOCs with the command: iocjscalerRestartAll.sh. Note: 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.
- Note 3: Nominal beam positions: 2C21 (X=0.0 mm, Y=0.0 mm), 2C24 (X=0.0 mm, Y=0.7 mm), 2H01 (X=0.3 mm, Y=-0.6 mm)
- Note 4: With beam to the Faraday Cup, typical rates on all halo counters upstream from the target should be either 0 or of the order of few counts. Count rates in the range of tens or more may indicate bad beam tune or bleed-through from other Halls.
Run Plan:(last update 2/7 - 09:00) The beam position should be as indicated above. Make sure FSD thresholds are set correctly for whatever current is selected (refer to instructions in the "Establish-physics quality beam" procedure at [1]), integration time is set to 5 ms, and that the orbit locks are on.
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General Instructions:
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