Difference between revisions of "Shift Checklist Help"

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Revision as of 13:40, 2 October 2019

Direct link to the Hall C Shift Checklist

Shift Checklist Help

  • The How-to page is extremely helpful. Use Firefox's "Page search" to help find what you are looking for.
  • There is also an older Shift Checklist help file, which may help to locate items. (But it is a stale document.) Below is an updated table.
What Where to find it How to do it
DATE (day-month-year) As given by Run Control Enter as DD-MM-YY
Time (24-hour clock) As given by Run Control Write the time into the cell
Your Name As given by your parents Write legibly
Beam Conditions from Overview Screen, DAQ, MEDMs, and Scalers
Beam Energy (MeV) The Hall C Summary Screen should be displayed on a wall monitor. If not see this page to bring it up: EPICS/Accelerator_Screens. Write down the Hall C beam energy
Beam Current (uA) Same as above MPS and Hall C BCM readings should be similar. Record the reading
Beam position lock on? Use jmenu and search for 'lock.' Then choose 'Orbit Locks Normal View

and look for 'HallCOrb.' It should be in green and show 'Running.'

Write 'yes' or 'no' in the cell
Beam energy lock on? Use jmenu and search for 'lock.' Then choose 'Energy Locks.' Write down the three colors: one for '0R, 1A, 2A.' (They should all be green. This indicates 'yes.')
IPM3H07A, B, and C BPM positions. Are they nominal? See the Hall C Summary Screen. Record the displayed beam position. Compare it with the nominal position posted on the white board or sticky note.
Fast Raster Pattern Go to the electronics room and verify the raster pattern on the oscilloscope screen is circular. Record 'yes' if so. If not, notify the TO and MCC immediately.
Fast Raster Setpoint for Width, Height (x, y) [mm] Use jmenu and search for 'fast raster.' The screen is "Hall C Raster Controls." Record the set sizes in the “Set Raster Size” box.
Fast Raster Measured Currents (IxO3H, Ix04H, Iy03V, IyO4V) [A] Use jmenu and search for 'fast raster.' The screen is "Hall C Raster Controls." Record the the four measured currents (Ix and Iy for two H and two V coils) from the “Raster Measured Current” box.
Helicity Reporting Delay (No Delay, ___ Windows) Use jmenu and search for 'helicity,' then choose 'Helicity Control.' Look for 'Reporting Delay.' Record the time of delay (it should be 8 windows).
Alarm Handler Status (General) The Alarm Handler process must be running and always visible on one of the desktop machines. If it isn't, bring it up using this page: Hall_C_Alarm_Handler Verify that it is running, and that the alarm sound is NOT silenced. (N.B.: this is not the old legacy high-voltage alarm. )
HMS Collimator Setting Use jmenu → 'Standalone Menus' → 'Hall C.' On the Hall C Operations Menu under “Experiment Specific” is HMS Coll. Motion Control. Determine and record the collimator position. For physics runs, HMS should be either PION or LARGE.
SHMS Collimator Setting Use jmenu → 'Standalone Menus' → 'Hall C.' On the Hall C Operations Menu under “Experiment Specific” is SHMS Coll. Motion Control. Determine and record the collimator position. For physics runs, SHMS should be COLLIMATOR.
HMS Trigger Rate On the CODA GUI Screen, next to the appropriate prescaler value (ps1 thru ps6). Record the typical instantaneous rate
Target (material, length) Ask the target operator (TO). Record which target is in the beam.
Drift Ch. Mixer Flows: Ar/Eth (~0.3/~0.3 slpm) Type “go munin” and select “gas_shed” under Categories on the left side of the page. You can also find the needed charts here: [Flow and Temperature Charts] Record “Argon Flow” and “Ethane Flow.”
Drift Chamber Gas Delivery Press (500 ± 5 Torr) Same as above. Record “Ar:Eth Pressure.”
Drift Ch. Gas Isopropanol Temp. (2 ± 2 C) Same as above. Record the “Isopropanol Fridge” temperature.
HMS Drift Chamber Threshold (5.5V?) Run jmenu and search for 'threshold', and select the 'HallC Drift Chamber Thresholds' item. Record the HMS 'Read' value.
SHMS Drift Chamber Threshold (4.5V?) Run jmenu and search for 'threshold', and select the 'HallC Drift Chamber Thresholds' item. Record the SHMS 'Read' value.
HMS Angle (TV/GUI) Type “go_cameras” to bring up a TV image of the angle scale on the floor (see link here: Hall_C_Cameras). The Rotation GUI can be executed from "go_magnets." (see link here: Spectrometer_Rotation Note only one copy of the magnet control screen can be up. So make sure one isn't already up.) Read the angles and write it down. There is a slight offset between the TV and GUI values (the TV is the most accurate one).
SHMS Angle (TV/GUI) Same as above. Read the angles and write it down. There is a slight offset between the TV and GUI values (the TV is the most accurate one).
Hall Survey (TV Cameras) Scan all the cameras in the hall looking for anything unusual. Verify that you performed the inspection by checking off the box.
Hall TV Cameras returned HOME? Return TV cameras to HOME positions. Note: cameras may be left in a different position if there is a specific need. Check the box to indicate that cameras were returned to desired positions.
HMS Shutter (Magnet GUI) Use TV camera on HMS side of the hall to inspect the indicator light on the control box outside the HMS shield house door. Shutter must be “OPEN” when taking data in the HMS.
SHMS Shutter (Magnet GUI) Open/Closed status is indicated on the “Magnets” GUI on the far right of the SHMS magnets menu bar. Alternate method: pan the HCCAM04 (SHMS bubblers) camera to the small mirror on the left; if you can see the bolts on the vacuum flange, the shutter is open. If the shutter is installed it must be “OPEN” when taking data in the SHMS. If the Noble Gas Cerenkov is in use then the shutter is not installed; in this case write “NA” on the checklist.
HMS & SHMS Doors Closed? (TV) Note this while doing hall survey with TV cameras. ALL shield house doors should be closed when taking beam.
Unser (3H05) Temperatures OK (110 ± 1 F) Go to the electronics room, and locate the top of rack CH03B12, LED digits. Nominal 110 degrees. Record the reading.
BCM (3H04) Temperatures OK (110 ± 1 F) (Camera) Locate Rack HC01Z01 in the experimental hall using the cameras. Use this link for help: Hall_C_BCM_Temperatures Record the reading.
HMS Detector HV Refer to the HMS HV GUI from running "go_hv," if it isn't already up on a computer (it usually is!) Verify that GUI is “RUNNING” and not indicating any ’OFF’ or bad channels
SHMS Detector HV Refer to the SHMS HV GUI from running "go_hv," if it isn't already up on a computer (it usually is!) Verify that GUI is “RUNNING” and not indicating any ’OFF’ or bad channels.
HMS Momentum Set (+/- GeV/c) and Particle Charge (E or P) The HMS magnets Momentum setpoint (P0) and particle polarity (E or P) are displayed on the magnet controls screen. Write down P0 and either E for electron or P for proton. If GUI shows Using NonStandard Tune you must verify that the magnet Set Currents match the momentum specified in the Run Coordinator’s Run-Plan.
HMS Q1,2,3 and D Current Setpoints: ± setpoint Use the screens available from the“go magnets” command. The magnet Set Currents, with sign, are on the individual PSU screens. Write down the Set Current polarities and values. (±xxxx.xx Amps)
HMS D NMR Field: ± readback Use the screens available from the “go_magnets” command. Bring up the NMR screen. Write down the NMR readout.
HMS Q1, Q2, Q3, D N2/He Level [%] (50 to 75%) Use the screens available from the “go_magnets” command. Record He and N2 levels from their respective screens.
SHMS Momentum Set (+/- GeV/c) and Particle Charge (E or P) The SHMS magnets Momentum setpoint (P0) and particle polarity (E or P) are displayed on the magnet controls screen. Write down P0 and either E for electron or P for proton. If GUI shows Using NonStandard Tune you must verify that the magnet Set Currents match the momentum specified in the Run Coordinator’s Run-Plan.
SHMS HB, Q1, Q2, Q3 and D Current Setpoints: ± setpoint Use the screens available from the“go magnets” command. The magnet Set Currents, with sign, are on the individual PSU screens. Write down the Set Current polarities and values. (±xxxx.xx Amps)
SHMS HB, Q1, Q2, Q3, D N2/He Level [%] (50 to 75%) Use the screens available from the “go_magnets” command. Record He and N2 levels from their respective screens.
HMS Chamber fiducial efficiency (online analysis) [%] (Enter value; ideally > 95%)
SHMS Chamber fiducial efficiency (online analysis) [%] (Enter value; ideally > 95%)
HMS Hodoscope Threshold Voltage Readback [mV]
HMS/SHMS DAQ Trigger Rate [Hz]
HMS/SHMS Deadtime
HCLog screen shot of Target
HCLog screen shot of Magnet screens (HMS+SHMS)
SHMS Trigger Rate On the CODA GUI Screen, next to the appropriate prescaler value (ps1 thru ps6). Record the typical instantaneous rate
HMS Dead Time On the CODA GUI Screen, under the "computer live time" tab. Calculate and record the average value
SHMS Dead Time On the CODA GUI Screen, under the "computer live time" tab. Calculate and record the average value
Hall C General Checks