Difference between revisions of "Engineering Run"
Jump to navigation
Jump to search
Line 100: | Line 100: | ||
* <s>Once work in the Hall is complete, ramp the solenoid up to -100% (RC or PDL will do it). Once solenoid is at field, ramp torus to +60% (inbending electrons). | * <s>Once work in the Hall is complete, ramp the solenoid up to -100% (RC or PDL will do it). Once solenoid is at field, ramp torus to +60% (inbending electrons). | ||
* Ask MCC to ramp the tagger magnet up to prepare for beam tuning.</s> | * Ask MCC to ramp the tagger magnet up to prepare for beam tuning.</s> | ||
− | * When MCC will inform you that they are ready to send beam, turn most sensitive detectors off including trackers (SVT, MVT, FTT, DC), Central Detectors (CTOF, CND) and RICH: refer to the manuals or call the experts for any questions. | + | *<s> When MCC will inform you that they are ready to send beam, turn most sensitive detectors off including trackers (SVT, MVT, FTT, DC), Central Detectors (CTOF, CND) and RICH: refer to the manuals or call the experts for any questions.</s> |
− | * Prepare to re-establish beam following the "Establish-physics quality beam" procedure at [https://wiki.jlab.org/clas12-run/images/e/e3/Estab_beam.pdf]. Consult with the beamline expert in case of issues. | + | * <s> Prepare to re-establish beam following the "Establish-physics quality beam" procedure at [https://wiki.jlab.org/clas12-run/images/e/e3/Estab_beam.pdf]. Consult with the beamline expert in case of issues.</s> |
* Once beam is tuned to the FC, start data taking at 60% field (negatives inbending) and solenoid to -100% field: | * Once beam is tuned to the FC, start data taking at 60% field (negatives inbending) and solenoid to -100% field: | ||
** Test production run: 5 nA beam current on LH2 target, DAQ configuration PROD (selected by clicking on Configure before the Download), trigger file tr_electron_2gev_lt.trg (selected at the Download), beam position as indicated above; Take 2 hours of data. | ** Test production run: 5 nA beam current on LH2 target, DAQ configuration PROD (selected by clicking on Configure before the Download), trigger file tr_electron_2gev_lt.trg (selected at the Download), beam position as indicated above; Take 2 hours of data. |
Revision as of 20:25, 23 January 2018
[edit]
Shift ScheduleShift ChecklistHot CheckoutBeam Time Accounting |
Manuals |
Procedures |
JLab Logbooks
|
|
|
- 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, Winter 2018
Beam energy 2.1 GeV (1 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: Raffaella De Vita
- (757) 575-7540
- 9 575 7540 from Counting Room
- devita@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=0.7 mm, Y=-0.5 mm)
Run Plan:(last update 1/22 - 18:00 am)
Beam Tuning:
When ready to get beam, turn all beamline devices ON, turn all CLAS12 detectors OFF |
General Instructions:
Every Shift:
Every Run:
|
Webcams |
Manuals |
Epics on the web
|