Difference between revisions of "Engineering Run"
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== <font color=blue>''' Run Plan:'''</font>== | == <font color=blue>''' Run Plan:'''</font>== | ||
− | All studies for the next few shifts will use 85% torus field (negatives bending in); the strength of the solenoid field and the status of the hydrogen target are listed below. | + | All studies for the next few shifts will use 85% torus field (negatives bending in), 100% solenoid field, a a full hydrogen target; the strength of the solenoid field and the status of the hydrogen target are listed below. |
− | * | + | * The trigger and DAQ folks will work to setup and test the CLAS12 electron trigger. |
− | + | * Check the DC stability with beam currents of 5 nA, 10 nA, and 15 nA to decide on overnight data-taking conditions. | |
− | * | + | * Take 30- 60 min data runs with the electron trigger (trigger_prod.trg) at 5 nA, 10 nA, and 15 nA; record rates and currents in the detectors in the logbook along with the DC occupancies and DAQ rates |
+ | * Run overnight with a beam current of 10 nA with the standard electron trigger (trigger_prod.trg) | ||
* Work on studies of detector optimization. This includes: | * Work on studies of detector optimization. This includes: | ||
** Reduce the DC time windows closer to their nominal production values | ** Reduce the DC time windows closer to their nominal production values | ||
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** Set the detector thresholds to nominal values for initial data taking; | ** Set the detector thresholds to nominal values for initial data taking; | ||
** In all cases, contact the associated detector subsystem experts to complete this work in conjunction with the DAQ expert; | ** In all cases, contact the associated detector subsystem experts to complete this work in conjunction with the DAQ expert; | ||
+ | * Complete a scan of beam currents at 10 nA, 15 nA, 20 nA, ... 100 nA (?) At each setting record rates in all detectors and currents in DC, SVT, and MM. The beam intensity and duration will be established by the Run Coordinator. | ||
+ | * Perform checkout of Moller polarimeter system in conjunction with the beamline expert | ||
| valign=top | | | valign=top | | ||
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* All jscaler iocs (iocjscalerX) on the health screen under DAQ tab) must be restarted after every DAQ prestart is completed. A button to do it all in one is available on the beamline overview screen | * All jscaler iocs (iocjscalerX) on the health screen under DAQ tab) must be restarted after every DAQ prestart is completed. A button to do it all in one is available on the beamline overview screen | ||
* Check that no unecessary beamline-related screens are open. This includes particularly the big beamline overview screen, but also and any motor/harp/collimator screens, and ioc health screens. | * Check that no unecessary beamline-related screens are open. This includes particularly the big beamline overview screen, but also and any motor/harp/collimator screens, and ioc health screens. | ||
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== <font color=blue>''' Beam Tuning:'''</font>== | == <font color=blue>''' Beam Tuning:'''</font>== |
Revision as of 20:41, 15 December 2017
[edit]
Shift ScheduleShift ChecklistHot CheckoutBeam Time Accounting |
Manuals |
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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.
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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);
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:All studies for the next few shifts will use 85% torus field (negatives bending in), 100% solenoid field, a a full hydrogen target; the strength of the solenoid field and the status of the hydrogen target are listed below.
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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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