Difference between revisions of "Run Group A"
Jump to navigation
Jump to search
| Line 147: | Line 147: | ||
*# repeat harp scans at 2C21, 2C24 (tagger harp) and 2H01: the profile for 2H01 should be as in https://logbooks.jlab.org/entry/3507626. Make sure you select the proper PMT for the analysis. The profile at 2C21 and 2C24 should be as in the scans performed with beam to the tagger magnet yoke dump. If necessary ask MCC to adjust the beam profile at 2H01 to match the previous scan. | *# repeat harp scans at 2C21, 2C24 (tagger harp) and 2H01: the profile for 2H01 should be as in https://logbooks.jlab.org/entry/3507626. Make sure you select the proper PMT for the analysis. The profile at 2C21 and 2C24 should be as in the scans performed with beam to the tagger magnet yoke dump. If necessary ask MCC to adjust the beam profile at 2H01 to match the previous scan. | ||
--> | --> | ||
| − | <font color=blue> Once beam to Faraday Cup is established, prepare to start data taking. Switch on all detectors <font color=red> '''except MM and SVT you need to call the SVT and MM System experts to turn them on'''</font> ask MCC for 5 nA beam check that the rates on the detectors and beam position.Once the beam is stable put beam blocker in ask MCC for to go 50 nA by step of 10 nA checking the rates at each step once the beam is stable at 50 nA and start data taking for 8 hours 2 hours/run with the RGA trigger | + | <font color=blue> Once beam to Faraday Cup is established, prepare to start data taking. Switch on all detectors <font color=red> '''except MM and SVT you need to call the SVT and MM System experts to turn them on'''</font> ask MCC for 5 nA beam check that the rates on the detectors and beam position.Once the beam is stable put beam blocker in ask MCC for to go 50 nA by step of 10 nA checking the rates at each step once the beam is stable at 50 nA and start data taking for 8 hours 2 hours/run with the RGA trigger elec_htcc_1phe_pcal_300.trg </font> |
'''[[Every Shift:]]''' | '''[[Every Shift:]]''' | ||
Revision as of 16:51, 11 February 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 Run Group A, 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: Latifa Elouadrhiri
- (757) 575-7540
- 9 575 7540 from Counting Room
- latifa@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 on 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 2/10 - 17:00)
Prepare For Beam Tuning:
Once beam to Faraday Cup is established, prepare to start data taking. Switch on all detectors except MM and SVT you need to call the SVT and MM System experts to turn them on ask MCC for 5 nA beam check that the rates on the detectors and beam position.Once the beam is stable put beam blocker in ask MCC for to go 50 nA by step of 10 nA checking the rates at each step once the beam is stable at 50 nA and start data taking for 8 hours 2 hours/run with the RGA trigger elec_htcc_1phe_pcal_300.trg
|
General Instructions:
Every Shift:
|
Webcams |
Manuals |
Epics on the web
|
Hall-B |
Accelerator |
Bluejean meetings
|
|
|
