Difference between revisions of "Engineering Run"
Jump to navigation
Jump to search
Line 91: | Line 91: | ||
* At the end of each run, follow the DAQ restart sequence "end run", "abort", "reset", "download", "prestart", "go". The DAQ rate should be 2 -3 kHz (this includes a 1 kHz pulser). After DAQ restart is complete reboot the scaler IOCs with the command: iocjscalerRestartAll.sh | * At the end of each run, follow the DAQ restart sequence "end run", "abort", "reset", "download", "prestart", "go". The DAQ rate should be 2 -3 kHz (this includes a 1 kHz pulser). After DAQ restart is complete reboot the scaler IOCs with the command: iocjscalerRestartAll.sh | ||
− | + | * Recover from solenoid fast dump and bring magnet up to 500 A for 5 min | |
− | * Recover from solenoid fast | + | * Bring solenoid magnet to full field at 2416 A. |
* Perform steering optimization of the beam and perform a set of harp scans (2C21, 2C24, 2H01) | * Perform steering optimization of the beam and perform a set of harp scans (2C21, 2C24, 2H01) | ||
* Adjust DC R2 to HV setting #10, -45 mV threshold | * Adjust DC R2 to HV setting #10, -45 mV threshold | ||
− | * Take data run | + | * Take a 1 hr data run at a beam current of 10 nA with the standard electron trigger (trigger_prod.trg). Record rates in all detectors, and currents and occupancies in the DC |
− | * Complete a scan of beam currents at 10 nA, | + | * Reduce the DC time windows to their nominal values (R1: 250 ns, R2: 500 ns, R3: 750 ns) |
− | + | * Complete a scan of beam currents at 10 nA, 20 nA, 30 nA, 40 nA, 50 nA, 60 nA, 70 nA. At each setting record rates in all detectors and currents in DC, SVT, and MM. | |
− | + | Take 15 min of data at each setting | |
− | |||
− | |||
* Complete calibration runs at beam currents of 10 nA and 25 nA. Take 2 hr of data at each setting | * Complete calibration runs at beam currents of 10 nA and 25 nA. Take 2 hr of data at each setting | ||
* Complete calibration runs at beam currents of 50 nA and 75 nA. Take 2 hr of data at each setting | * Complete calibration runs at beam currents of 50 nA and 75 nA. Take 2 hr of data at each setting |
Revision as of 16:43, 16 December 2017
[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, Fall 2017
Beam energy 10.6 GeV (5 pass)
Torus : +3200 A (85% field), Solenoid: 2416 A (100% field), full target;
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:
Take 15 min of data at each setting
|
General Instructions:
Beam Tuning:
When ready to get beam, Turn all beamline devices ON, turn all CLAS12 detectors OFF (including SVT)
|
Every Shift:
|
Every Run:
|
---|
Webcams |
Manuals |
Epics on the web
|