Difference between revisions of "Engineering Run"
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* Work on trigger development/optimization for hadron trigger | * Work on trigger development/optimization for hadron trigger | ||
− | * Take data for | + | * Take data for trigger studies at a beam current of 30 nA until midnight |
− | * Take data at | + | * When trigger studies are complete turn on SVT |
+ | * Take data at 20 nA with the production electron trigger (trigger_electron.trg). Take data for 5 hours or until 5 a.m.. | ||
* Final task before beam off (start at 5 a.m.): Measure DC occupancy as function of solenoid field. With 1 nA beam measure DC occupancy at 100% (2416 A), 90% (2174 A), 80% (1933 A), 70% (1691 A), 60% (1450 A), and 50% (1208 A) solenoid field. For each setting record DC occupancy from MON12 and DC currents in logbook. | * Final task before beam off (start at 5 a.m.): Measure DC occupancy as function of solenoid field. With 1 nA beam measure DC occupancy at 100% (2416 A), 90% (2174 A), 80% (1933 A), 70% (1691 A), 60% (1450 A), and 50% (1208 A) solenoid field. For each setting record DC occupancy from MON12 and DC currents in logbook. | ||
<b>Note: Shift workers are not authorized to adjust the magnet power supplies. Run Coordinator will change the settings.</b> | <b>Note: Shift workers are not authorized to adjust the magnet power supplies. Run Coordinator will change the settings.</b> | ||
+ | <b>Note: For the BMT the HV will have to be adjusted for each solenoid field setting.</b> | ||
* Beam will be turned off on 12/21 at 7 a.m.. Hall B Engineering will be responsible to ramp down the solenoid and the torus. As soon as beam is off, turn off all detectors (HV and LV). Subsystem folks should contact the appropriate folks to ensure their gas systems are secured or set for the shutdown. | * Beam will be turned off on 12/21 at 7 a.m.. Hall B Engineering will be responsible to ramp down the solenoid and the torus. As soon as beam is off, turn off all detectors (HV and LV). Subsystem folks should contact the appropriate folks to ensure their gas systems are secured or set for the shutdown. |
Revision as of 20:49, 20 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
- 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 Engineering Run, Fall 2017
Beam energy 10.6 GeV (5 pass)
Torus : -3770 A (100% field), Solenoid: 2416 A (100% → 50% 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
- Note: Keep the HV for DC R2 S2 off (there is a problem with this chamber)
- Note: 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.
Run Plan:
Note: Shift workers are not authorized to adjust the magnet power supplies. Run Coordinator will change the settings. Note: For the BMT the HV will have to be adjusted for each solenoid field setting.
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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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