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. | ||
− | * Take data run with the production electron trigger (trigger_electron.trg) with a 15 nA beam current. Be sure to record rates in all detectors and currents in DC, SVT, MM. Take one run with the beam blocker out of the beam. | + | * Take data run with the production electron trigger (trigger_electron.trg) with a 15 nA beam current. Be sure to record rates in all detectors and currents in DC, SVT, MM. Take one run with the beam blocker out of the beam with 15 nA beam current. |
+ | * Take data run with the production electron trigger with modified prescale factor on ECIn. Contact Cole Smith for directions. | ||
* Complete a scan of beam currents at 20 nA, 30 nA, 40 nA, 50 nA, 60 nA, 70 nA using the random trigger (random_only.trg). At each setting record rates in all detectors and currents in DC, SVT, and MM. Take 10 min of data at each setting. Enter DC occupancies from mon12 in the logbook. Data should only be taken if the beam tuning is very stable. | * Complete a scan of beam currents at 20 nA, 30 nA, 40 nA, 50 nA, 60 nA, 70 nA using the random trigger (random_only.trg). At each setting record rates in all detectors and currents in DC, SVT, and MM. Take 10 min of data at each setting. Enter DC occupancies from mon12 in the logbook. Data should only be taken if the beam tuning is very stable. |
Revision as of 10:10, 17 December 2017
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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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Manuals |
Epics on the web
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