Difference between revisions of "Short Term Run Plan"

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(Created page with "== Production running == The plan is to run at 200nA with full LHe4 target and the solenoid and chambers on. <br> Keep the runs to 2h or less. == Shift leader == * guidel...")
 
 
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== Production running ==
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Last updated - see smallprint at the bottom of the page
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The plan is to run at 200nA with full LHe4 target and the solenoid and chambers on. <br>
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Keep the runs to 2h or less.
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== Shift leader  ==
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== Run Plan ==
  
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* guidelines are at https://halldweb.jlab.org/hdops/wiki/index.php/Shift_Guidelines_for_Shift_Leader 
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Production running cycling through targets:
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* 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)
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* '''JD80-212 80um''' diamond, '''200 nA''' beam current
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** 800M events for '''0/90 deg''' and '''PARA''' setting
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** 800M events for '''0/90 deg''' and '''PERP''' setting
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** 800M events for '''45/135 deg''' and '''PARA''' setting
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** 800M events for '''45/135 deg''' and '''PERP''' setting
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* 400M events with '''4.5×10-4 Al 40um''' radiator (on goniometer!), '''300 nA''' beam current
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** Set '''new reference for amorphous radiator''' in CBREM GUI.
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* Runs should be no longer than 2 hours.
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* Keep the state of the production cycle on the whiteboard up-to-date.
  
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== Shift worker ==  
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== Special instructions ==  
  
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* guidelines are at https://halldweb.jlab.org/hdops/wiki/index.php/Guidelines_for_Remote_Worker_Shift
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* Put '''comments''' for each run in the window opened by the DAQ.
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* duties:
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** The comment should at least contain the following information "<radiator> <PARA/PERP>, <beam current>, LH2 target, <typical trigger rate>, <typical live time>, <issues if any>"
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*# shift checklist (per shift)
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** Example: "JD80-212 80um 45/135 PARA, 200nA, LH2 target, 81kHz, 93% live time"
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*# data monitoring plots (per run)
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** Note: due to a software issue run comments may not show up in RCDB, but they are saved by the DAQ and will be later added to the RCDB entries.
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*# screen shot of CSS GlueX Overview (per run)
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* Set a new '''amorphous reference''' in the CBREM GUI each time the amorphous radiator is used.
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* Be sure to hit the '''"PARA" or "PERP" button''' in the CBREM GUI when switching diamond targets. Otherwise the diamond alignment may be in an undefined state and the experiment may be flooded with low-energy photons.
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* Watch for '''locked-up FCAL HV bases''' towards the end of a run and clear them before starting a new run. See [https://halldweb.jlab.org/hdops/wiki/index.php/Forward_Calorimeter_Shift#FCAL_High_Voltage_channel_with_yellow_border].
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* Watch the '''DAQ lifetime''' when beam is on. Sometimes it drops to 0%. Just stopping and restarting the run fixes this issue in most cases.
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* [https://forms.gle/N1cU1GWgXr81pWDc6 '''New hdops wiki feedback form is here'''] please use this to report confusing or outdated wiki instruction pages.
  
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== After beam restoration ==
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== Medium Term (1 week) ==
  
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* 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
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* No special plans.
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* '''retract the radiator''', make sure that the '''collimator is in blocking position'''
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* ask MCC to do their harp scan
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== Run conditions ==
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* follow the instructions in https://halldweb.jlab.org/hdops/wiki/index.php/Beam_Line_Detectors_Shift#Radiator_Harp_Scan to do our '''harp scans''' 
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* use the '''harp scan extrapolation''' tool and post screenshots of the plots into the logbook (eg https://logbooks.jlab.org/entry/3929556).
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== Special instructions ==
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* Radiators: see [https://halldweb.jlab.org/hdops/wiki/index.php/Short_Term_Run_Plan#Run_Plan Run Plan]
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* Collimator: 5.0 mm
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* TPOL converter: Be 75 um
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* Target: Liquid Hydrogen
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* DAQ configuration
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** RUN = PHYSICS_DIRC
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** SETUP = hd_all.tsg_HLN
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** Production: TRIGGER = FCAL_BCAL_PS_2025_mod_m9.conf
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** Raw-mode runs: TRIGGER = FCAL_BCAL_PS_2025_mod_m10.conf
  
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* If there are any '''timing problems''', please add sdobbs@jlab.org to the notifications in the logbook entry.
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== Current Experiment ==
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GlueX II (with DIRC) & JEF and Alpha
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* set the '''CDC HV before the start of each run using the value suggested by the AI'''. 
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* In the BTM this is "GlueX 2 / JEF"
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** 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.  
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* E12-12-002 [https://misportal.jlab.org/mis/physics/experiments/viewProposal.cfm?paperId=834 GlueX II Proposal]
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* E12-10-011 [https://www.jlab.org/exp_prog/proposals/proposal_updates/PR12-10-011_pac37.pdf JEF proposal]
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* 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
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* E12-12-002a [https://arxiv.org/abs/2405.01288 Alpha Proposal]
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https://halldweb.jlab.org/hdops/wiki/index.php/Pair_Spectrometer_Shift 
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can be followed to reset them, it has to be done on gluon100.
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== Hall Delta ==
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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.
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Latest revision as of 12:11, 14 May 2025

Last updated - see smallprint at the bottom of the page

Run Plan

Production running cycling through targets:

  • JD80-212 80um diamond, 200 nA beam current
    • 800M events for 0/90 deg and PARA setting
    • 800M events for 0/90 deg and PERP setting
    • 800M events for 45/135 deg and PARA setting
    • 800M events for 45/135 deg and PERP setting
  • 400M events with 4.5×10-4 Al 40um radiator (on goniometer!), 300 nA beam current
    • Set new reference for amorphous radiator in CBREM GUI.
  • Runs should be no longer than 2 hours.
  • Keep the state of the production cycle on the whiteboard up-to-date.

Special instructions

  • Put comments for each run in the window opened by the DAQ.
    • The comment should at least contain the following information "<radiator> <PARA/PERP>, <beam current>, LH2 target, <typical trigger rate>, <typical live time>, <issues if any>"
    • Example: "JD80-212 80um 45/135 PARA, 200nA, LH2 target, 81kHz, 93% live time"
    • Note: due to a software issue run comments may not show up in RCDB, but they are saved by the DAQ and will be later added to the RCDB entries.
  • Set a new amorphous reference in the CBREM GUI each time the amorphous radiator is used.
  • Be sure to hit the "PARA" or "PERP" button in the CBREM GUI when switching diamond targets. Otherwise the diamond alignment may be in an undefined state and the experiment may be flooded with low-energy photons.
  • Watch for locked-up FCAL HV bases towards the end of a run and clear them before starting a new run. See [1].
  • Watch the DAQ lifetime when beam is on. Sometimes it drops to 0%. Just stopping and restarting the run fixes this issue in most cases.
  • New hdops wiki feedback form is here please use this to report confusing or outdated wiki instruction pages.

Medium Term (1 week)

  • No special plans.

Run conditions

  • Radiators: see Run Plan
  • Collimator: 5.0 mm
  • TPOL converter: Be 75 um
  • Target: Liquid Hydrogen
  • DAQ configuration
    • RUN = PHYSICS_DIRC
    • SETUP = hd_all.tsg_HLN
    • Production: TRIGGER = FCAL_BCAL_PS_2025_mod_m9.conf
    • Raw-mode runs: TRIGGER = FCAL_BCAL_PS_2025_mod_m10.conf

Current Experiment

GlueX II (with DIRC) & JEF and Alpha

Retrieved from "https://halldweb.jlab.org/hdops/wiki/index.php?title=Short_Term_Run_Plan&oldid=5014"