Difference between revisions of "Run Group A"
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== <font color=blue>''' Run Plan:'''</font>== | == <font color=blue>''' Run Plan:'''</font>== | ||
| − | ''(last update 2/6 - | + | ''(last update 2/6 - 16:00)'' |
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. | 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>Begin flowing gas to the MM detectors (BMT, FMT, FT-Trk). Contact the MM expert for this work.</s> | ** <s>Begin flowing gas to the MM detectors (BMT, FMT, FT-Trk). Contact the MM expert for this work.</s> | ||
** <s>When the target is full contact the Slow Controls expert to make sure the target alarms are set properly in the alarm handler.</s> | ** <s>When the target is full contact the Slow Controls expert to make sure the target alarms are set properly in the alarm handler.</s> | ||
| − | * Call for beam at 5 nA. When beam is stable, increase the beam current to 15 nA in consultation with the RC to set the operating current for production running. | + | * <s>Call for beam at 5 nA. When beam is stable, increase the beam current to 15 nA in consultation with the RC to set the operating current for production running.</s> |
| − | ** At the current setting for production, put pictures of the beamline scalers and detector rate/current screens in the logbook. | + | ** <s>At the current setting for production, put pictures of the beamline scalers and detector rate/current screens in the logbook.</s> |
| − | ** Take a series of short data runs to optimize the pre-scale factors for the FT trigger. Contact the FT expert for this optimization. | + | ** <s>Take a series of short data runs to optimize the pre-scale factors for the FT trigger. Contact the FT expert for this optimization.</s> |
* Take data at 15 nA with PROD/elec_6gev_htcc_1phe_pcal_150.trg starting a new run every 2 hours until 8 p.m.. | * Take data at 15 nA with PROD/elec_6gev_htcc_1phe_pcal_150.trg starting a new run every 2 hours until 8 p.m.. | ||
* Complete a calibration of the beam blocker transmission Rafayel P. will lead this effort. Call him at 7 p.m. to start at 8 p.m. (number on White Board). | * Complete a calibration of the beam blocker transmission Rafayel P. will lead this effort. Call him at 7 p.m. to start at 8 p.m. (number on White Board). | ||
Revision as of 16:11, 6 February 2018
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CLAS12 Run Group A, Winter 2018
Beam energy 6.4 GeV (3 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 2/6 - 16:00) 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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