Difference between revisions of "Engineering Run"
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* At the end of each run, follow the DAQ restart sequence "end run", "abort", "reset", "download", "prestart", "go". The DAQ rate should be 2 -3 kHz (this includes a 1 kHz pulser). 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 an issue a roc_reboot command and try again. Contact the DAQ expert if there are any questions. | * At the end of each run, follow the DAQ restart sequence "end run", "abort", "reset", "download", "prestart", "go". The DAQ rate should be 2 -3 kHz (this includes a 1 kHz pulser). 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 an issue a roc_reboot command and try again. Contact the DAQ expert if there are any questions. | ||
− | + | * Start the DAQ with the production electron trigger (trigger_electron.trg). Take the following data runs in the following conditions: 50 nA (2 hours), 30 nA (3 hours), 10 nA (2 hours). Record rates in all detectors and currents in the DC, SVT, MM at several discrete steps. Take snapshots of the main scaler GUI and DC occupancy plots from MON12 in the logbook. | |
− | * Start the DAQ with the production electron trigger (trigger_electron.trg). | + | * Beamline commissioning studies (Led by Stepan Stepanyan): |
− | * | + | ** Study beam alignment: complete (x,y) beam scan and record DC occupancies for each sector; |
− | * | + | ** Perform checkout of Moller polarimeter system |
* Perform DC HV/threshold study with settings #8, #9, #9 for R1, R2, R3 with thresholds of -20 mV, -30 mV, -30 mV. | * Perform DC HV/threshold study with settings #8, #9, #9 for R1, R2, R3 with thresholds of -20 mV, -30 mV, -30 mV. | ||
* Measure DC occupancy as function of solenoid field | * Measure DC occupancy as function of solenoid field | ||
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Revision as of 19:03, 17 December 2017
[edit]
Shift ScheduleShift ChecklistHot CheckoutBeam Time Accounting |
Manuals |
Procedures |
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
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Click Here to edit Phone Numbers. Note, you then also have to edit this page to force a refresh.
CLAS12 Engineering Run, Fall 2017
Beam energy 10.6 GeV (5 pass)
Torus : +3200 A (85% field), Solenoid: 2416 A (100% field), full target;
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: Daniel S. Carman
- (757) 575-7540
- 9 575 7540 from Counting Room
- carman@jlab.org
PDL: Eugene Pasyuk
- (757) 876-1789
- 9 876-1789 from Counting Room
- pasyuk@jlab.org
Run Plan:
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General Instructions:
Beam Tuning:
When ready to get beam, Turn all beamline devices ON, turn all CLAS12 detectors OFF (including SVT)
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Every Shift:
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Every Run:
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Webcams |
Manuals |
Epics on the web
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