Full Shift Checklist

In the process of editing and updating this page. Please contact Juliette Mammei crowder@jlab.org with questions or suggestions.

PREX Main<< Information for Shift Takers << Shift Checklist

Entering shift info

• Shift leader
• Target operator
• Analysis expert
• Shift (day, swing, or owl)
  • Enter the names of the shift workers (Shift leader, Target operator, Analysis expert)
  • Indicate which shift the checklist is for (day, swing, or owl)

Beam and Hall checks

• Is alarm handler running on hacweb7?
• Beam Energy (GeV)
• Beam current (µA)
• Downstream raster (B) on? Yes/No
• Raster size (x:y mm, see log 3654466 )?
• Fast feedback on? Yes/No
• Beam Position Monitor X/Y (mm) A
• Beam Position Monitor X/Y (mm) E (BPM B in Hall A Tools)
• BCM temperature (K) (PV, PS, Thermocouple) If these differ by +/-.5 from (110.0,110.0,115.0) contact RC and halog
• Arc energy NMR locked? ( (Goto ARC or the "Field Management Screen", and verify if the box locked is ON/OFF))
• Current Target
• Argon pressure (psi)
• Ethane pressure (psi)
• CO2 pressure (psi)
• Visual Hall Inspection OK?
• Truck ramp door closed ( use the camera to see the door from mirror)?
• Septum current (A) and polarity?
• Upstream/downstream corrector currents (A) ?

• Parity Checks
  • IHWP setting (IN/OUT)
    • the button that is depressed is the setting
    • PGUN and parity controls
  • RHWP setting (value like 1532)
  • Wien settings?
    • Spin controls - jmenu search for spin
    • VWienAngle
    • Phi_FG
    • HWienAngle
    • FLIP(-LEFT) (-RIGHT)

Left Arm Checks

• Left Arm momentum (GeV)
• Left Arm Q1, Q2, D, Q3 regulartors on (yes/no, ask experts)?
• Left Arm cryo flow level OK? Yes/No He>60% (Ignore Nitrogen)
• Left Arm NMR OK? Yes/No
• Left Arm Q1 Momentum (GeV/c) / current (A) / B-Field (+/-G)
• Left Arm Q2 Momentum (GeV/c) / current (A) / B-Field (+/-G)
• Left Arm D Momentum (GeV/c) / current (A) / B-Field (+/-G)
• Left Arm Q3 Momentum (GeV/c) / current (A) / B-Field (+/-G)
• Is Left VDC gas flow (top/bottom) on?
• Left VDC HV on (top/bottom)?
• VDC thresholds (All 4 values should be 3.0 V, yes/no) ?
• Left Cerenkov HV on?
• Left Pion rejector HV on?
• Left s0/s2m HV on (s0 may be off for production, check with expert)?
• Check online plots (y/n)? -LHRS

Right Arm Checks

• Right arm momentum (GeV)
• Right Arm Q1, Q2,D,Q3 regulartor on? (yes/no)
• Right arm cryo flow level OK? Yes/No He>60% (Ignore Nitrogen)
• Right Arm NMR OK? Yes/No
• Right Arm Q1 Momentum (GeV/c) / current (A) / B-Field (+/-G)
• Right Arm Q2 Momentum (GeV/c) / current (A) / B-Field (+/-G)
• Right Arm D Momentum (GeV/c) / current (A) / B-Field (+/-G)
• Right Arm Q3 Momentum (GeV/c) / current (A) / B-Field (+/-G)
• Is Right VDC gas flow (top/bottom) on?
• Right VDC HV on (top/bottom)?
• Right Cerenkov HV on?
• Right Pion rejector HV on?
• Right s0/s2m HV on?
• Right SCIFI HV off (should be off during production runs, y/n)?
• S3 HV off (ch 6 of SCIFI HV GUI, should be off for production)?
• Check online plots (y/n)? -RHRS

CODA

• Latest run type (Test, Physics,..)
• Is the auto replay script running (ask the analysis expert)?
• Is the APEX run list (in a white binder) completed?
• Please attach the left/right HV and Scalers Screenshots to the shift report
• Time of beginning of latest run (RHRS)
• Latest run number
• Dead time (%)

Beamtime accounting

• Beamtime accounting table submitted?

In counting house

• Is the volume up on hacweb7? (both hardware and software)
• VESDA System OK? (VESDA is the smoke/fire detection and alarm system. Check the Hall A VESDA Console on the wall beside the door to the compter room
• Empty drip tray and place mug under spout on coffee maker
  • Press the buttons on either side of the tray and pull toward you
  • Place a mug under the spout while emptying the tray (and the previous mug) in the bathroom sink
  • Replace the tray by sliding back into the machine
  • Place a mug under the spout to help keep the tray from overflowing