Difference between revisions of "Short Term Run Plan"

Revision as of 11:44, 28 October 2021

PrimEx-eta: A Precision Measurement of the η Radiative Decay Width via the Primakoff Effect

The plan is to run at 200nA with full LHe4 target and the solenoid and drift chambers on.

Include a separate list of the runs taken during the shift at the end of the summary (for example, see https://logbooks.jlab.org/entry/3926883)
The BTA guidelines are at https://halldweb.jlab.org/hdops/wiki/index.php/BTA_guidelines. After loading the EPICS values, you may change the values, eg round them up or down.
- BANU values >= 5 minutes should be reflected in the PCC value
- BANU values < 5 minutes may be set to 0

Duties:
1. shift checklist (per shift)
2. data monitoring plots (per run)
3. screen shot of CSS GlueX Overview (per run)

check the radiation levels without a radiator and then with the radiator listed on the whiteboard (bottom RHS corner of the RH board) - there are columns of values expected with and without the radiator
retract the radiator, make sure that the collimator is in blocking position

ask MCC to do their harp scan
follow the instructions in https://halldweb.jlab.org/hdops/wiki/index.php/Beam_Line_Detectors_Shift#Radiator_Harp_Scan to do our harp scans
use the harp scan extrapolation tool and post screenshots of the plots into the logbook (eg https://logbooks.jlab.org/entry/3929556).

If there are any, please add sdobbs@jlab.org to the notifications in the logbook entry.

Set the CDC HV before the start of each run using the value suggested by the AI.

There are instructions here https://wiki.jlab.org/epsciwiki/index.php/PrimEx_instructions
The AI uses measurements from epics averaged over the last minute, so the AI should be used just before starting a run, when the beam current is at its target value and has been steady for the past minute.
If for any reason this proves to be problematic, please revert to the nominal HV, 2125V, and contact Naomi.

Keep an eye out for the PS and/or PSC scalers freezing. If it happens, then step 2+3 of the instructions 'Run PS Scalers' at https://halldweb.jlab.org/hdops/wiki/index.php/Pair_Spectrometer_Shift can be followed to reset them, it has to be done on gluon100.

It's good practice to refer to our hall as Delta when talking to MCC, to make sure that there is no acoustic confusion between us and hall B.

@@ Line 7: / Line 7: @@
 == Production running ==
-The plan is to run at 200nA with full LHe4 target and the solenoid and chambers on. <br>
+The plan is to run at 200nA with full LHe4 target and the solenoid and drift chambers on.
-Keep the runs to 2h or less.
+* DAQ configuration name: PHYSICS_PRIMEX
+* Trigger file: CCAL_FCAL_PS_m9.conf
+* Keep the runs to 2h or less.
 == Shift leader  ==