Difference between revisions of "Run Group A"
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<font color=blue>''' Prepare For Beam:'''</font> | <font color=blue>''' Prepare For Beam:'''</font> | ||
− | * Hall sweep around the magnet before the hall going to power permit | + | * <s> Hall sweep around the magnet before the hall going to power permit</s> |
− | * Make sure the light in the hall are off | + | * <s> Make sure the light in the hall are off |
− | * Call Maxime to switch the gas system for MM 8 hours before beam | + | * <s> Call Maxime to switch the gas system for MM 8 hours before beam</s> |
− | * Target is empty | + | * <s> Target is empty</s> |
− | * Power up the TORUS to negative polarity full field (-3770 A) (Will be done by RC or PDL) | + | * <s> Power up the TORUS to negative polarity full field (-3770 A) (Will be done by RC or PDL)</s> |
− | * Power up the solenoid to positive polarity full field (-2416) (Will be done by RC or PDL) | + | * <s> Power up the solenoid to positive polarity full field (-2416) (Will be done by RC or PDL)</s> |
<font color=blue>''' Prepare For Beam Tuning:'''</font> | <font color=blue>''' Prepare For Beam Tuning:'''</font> |
Revision as of 20:29, 10 February 2018
Shift ScheduleShift ChecklistHot CheckoutBeam Time Accounting |
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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
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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 A, Winter 2018
Beam energy 10.6 GeV (5 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 2/10 - 17:00)
Prepare For Beam Tuning:
Once beam to Faraday Cup is established, prepare to start data taking. Switch on all detectors except MM and SVT you need to call the experts to turn them on ask MCC for 5 nA beam check that the rates on the detectors and beam position. Once the beam is stable put beam blocker in ask MCC for 50 nA and start data taking for 8 hours 2 hours/run |
General Instructions:
Every Shift:
Every Run:
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