Difference between revisions of "Engineering Run"
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== <font color=blue>''' Run Plan:'''</font>== | == <font color=blue>''' Run Plan:'''</font>== | ||
| − | ''(last update 2/2 - | + | ''(last update 2/2 - 16:00)'' |
All studies will take data at 100% torus field (negatives inbending) and 100% solenoid field (positive polarity on supply). The beam position should be as indicated above. Make sure FSD thresholds are set correctly for whatever current is selected (refer to instructions in the "Establish-physics quality beam" procedure at [https://wiki.jlab.org/clas12-run/images/e/e3/Estab_beam.pdf]), integration time is set to 5 ms, and that the orbit locks are on. | All studies will take data at 100% torus field (negatives inbending) and 100% solenoid field (positive polarity on supply). The beam position should be as indicated above. Make sure FSD thresholds are set correctly for whatever current is selected (refer to instructions in the "Establish-physics quality beam" procedure at [https://wiki.jlab.org/clas12-run/images/e/e3/Estab_beam.pdf]), integration time is set to 5 ms, and that the orbit locks are on. | ||
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* <s>Take data to test the tracking trigger using the PROD/dc_dcno_htcc_1phe_pcal_300.cnf trigger at beam currents of 70 nA, 60 nA, 50 nA, 40 nA, 30 nA, 20 nA, 10 nA, 5 nA (2M events per current).</s> | * <s>Take data to test the tracking trigger using the PROD/dc_dcno_htcc_1phe_pcal_300.cnf trigger at beam currents of 70 nA, 60 nA, 50 nA, 40 nA, 30 nA, 20 nA, 10 nA, 5 nA (2M events per current).</s> | ||
* <s>DC threshold test: ask the DAQ expert to set the DC Region 2 thresholds to 60 mV and take one run (1 hr) at 30 nA with elec_htcc_1phe_pcal_300.cnf trigger. Once completed, revert to the nominal threshold of 45 mV.</s> | * <s>DC threshold test: ask the DAQ expert to set the DC Region 2 thresholds to 60 mV and take one run (1 hr) at 30 nA with elec_htcc_1phe_pcal_300.cnf trigger. Once completed, revert to the nominal threshold of 45 mV.</s> | ||
| − | * Complete test plan to study optimal HV settings for MM (BMT,FMT). This work will be led by the MM system experts. For this study, take data with PROD/elec_htcc_1phe_pcal_300.cnf at 5 nA | + | * <s>Complete test plan to study optimal HV settings for MM (BMT,FMT). This work will be led by the MM system experts. For this study, take data with PROD/elec_htcc_1phe_pcal_300.cnf at 5 nA</s> |
| − | * Take data with PROD/elec_htcc_1phe_pcal_300.cnf at | + | * Take data with PROD/elec_htcc_1phe_pcal_300.cnf at 35 nA; 2 hr long runs through the evening. The HTCC response equalization factors should be included in the trigger. |
* Continue trigger studies for the hadron trigger under the guidance of the DAQ/trigger experts. | * Continue trigger studies for the hadron trigger under the guidance of the DAQ/trigger experts. | ||
Revision as of 16:19, 2 February 2018
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CLAS12 Engineering Run, Winter 2018
Beam energy 10.6 GeV (5 pass)
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 1: Be very mindful of the background rates in the halo counters, rates in the detectors, and currents in the SVT for all settings to ensure that they are at safe levels.
- Note 2: At the end of each run, follow the DAQ restart sequence "end run", "abort", "reset", "download", "prestart", "go". 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 and issue a roc_reboot command and try again. Contact the DAQ expert if there are any questions.
- Note 3: Nominal beam positions: 2C21 (X=0.0 mm, Y=0.0 mm), 2C24 (X=0.0 mm, Y=0.7 mm), 2H01 (X=0.3 mm, Y=-0.6 mm)
- Note 4: With beam to the Faraday Cup, typical rates an all halo counters upstream from the target should be either 0 or of the order of few counts. Count rates in the range of tens or more may indicate bad beam tune or bleed-through from other Halls.
Run Plan:(last update 2/2 - 16:00) All studies will take data at 100% torus field (negatives inbending) and 100% solenoid field (positive polarity on supply). The beam position should be as indicated above. Make sure FSD thresholds are set correctly for whatever current is selected (refer to instructions in the "Establish-physics quality beam" procedure at [1]), integration time is set to 5 ms, and that the orbit locks are on.
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