Difference between revisions of "Engineering Run"
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''' CLAS12 Engineering Run, Fall 2017 </font> '''<br> | ''' CLAS12 Engineering Run, Fall 2017 </font> '''<br> | ||
''' Beam energy 10.6 GeV (5 pass) '''<br> | ''' Beam energy 10.6 GeV (5 pass) '''<br> | ||
− | ''' <font color="red"> Torus : + | + | ''' <font color="red"> Torus : +3200 A (85% field);</font>''' <br> |
''' Important: Document all your work in the logbook! '''<br> | ''' Important: Document all your work in the logbook! '''<br> | ||
''' Remember to fill in the [https://docs.google.com/spreadsheets/d/1frfBlq51qDXZD6fW5rcRefNXSGdVvdMozKUlAVNoUGc/edit?usp=sharing run list] at the beginning and end of each run (clas12run@gmail.com can fill the run list)'''<br> | ''' Remember to fill in the [https://docs.google.com/spreadsheets/d/1frfBlq51qDXZD6fW5rcRefNXSGdVvdMozKUlAVNoUGc/edit?usp=sharing run list] at the beginning and end of each run (clas12run@gmail.com can fill the run list)'''<br> | ||
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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 | + | 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. |
− | * | + | * Take full target data trigger at 10 nA; record rates in all detectors and currents in DC, SVT, and MM. |
− | + | * Allow the trigger team to work with the DAQ to study and establish the CLAS12 electron trigger. | |
− | + | * Complete a scan of beam currents at 10 nA, 15 nA, 20 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. | |
− | + | * Work on studies of detector optimization. This includes: | |
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** Reduce the DC time windows closer to their nominal production values | ** Reduce the DC time windows closer to their nominal production values | ||
+ | ** Optimize the DC HV settings | ||
** Reduce the FTOF and CTOF TDC time windows to match the FADC time window (400 ns). Ensure that the real timing peaks are properly centered in the time window. | ** Reduce the FTOF and CTOF TDC time windows to match the FADC time window (400 ns). Ensure that the real timing peaks are properly centered in the time window. | ||
− | ** Set the detector | + | ** 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; | ||
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Revision as of 10:06, 15 December 2017
[edit]
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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); 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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