Shift Checklist Help
From HallCWiki
Revision as of 04:43, 12 January 2020 by Gayoso (Talk | contribs) (Beam current Ramp description was copied from the beam energy lock)
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 |
|---|---|---|
| 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.' | |
| Beam energy lock on? | Use jmenu and search for 'lock.' Then choose 'Energy Locks.' | '0R, 1A, 2A.' should all be green. This indicates the locks are ON. |
| Beam Current Ramp Protection is ON | See How to determine status of Beam Current Ramp Rate Protection | |
| 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. | If beam is on and raster is NOT circular, stop beam 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 Small 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. |
| Target in use | 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. |
| HMS & SHMS Doors Closed? (TV) | Note this while doing hall survey with TV cameras. | ALL shield house doors should be closed when taking beam. |
| 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) | Open/Closed status is indicated on the "Magnets" GUI on the far right of the HMS magnets menu bar. Alternate method: 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. |
| 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%) | Locate the electron fiducial efficiency in the report monitoring file produced from the 50k replay | Record the value. |
| SHMS Chamber fiducial efficiency (online analysis) [%] (Enter value; ideally > 95%) | Locate the electron fiducial efficiency in the report monitoring file produced from the 50k replay | Record the value. |
| HMS Hodoscope Threshold Voltage Readback [mV] | Go to the electronics room and locate the voltmeter attached to the hodoscope voltage leads | Turn the voltmeter dial to the appropriate setting to measure the voltage. Record the value. |
| SHMS/HMS CODA run numbers | On the CODA GUI Screen. | Record the current run number, or "--" if not running. |
| HMS/SHMS DAQ Trigger Rate [Hz] | On the CODA GUI Screen, next to the appropriate prescaler value (ps1 thru ps6). | Record the typical instantaneous rate |
| HMS/SHMS Deadtime | On the CODA GUI Screen, under the "computer live time" tab. | Calculate and record the average value |
| HMS/SHMS Replays up to date? | Verify that the online replays have been completed and reviewd; and the offline (full) replays are at least in-progress. | Check the box if things are as-planned / current. |
| HCLog screen shot of Target | This should be done periodically by the TO. | Make sure the TO has posted a screenshot of the target and relevant charts to the logbook |
| HCLog screen shot of Magnet screens (HMS+SHMS) | Locate the magnet screens (should already be up on a computer) | Take a screenshot (go to terminal and type "hclog" to make a log post, click "add attachment," then click the desired image) to include the rotation GUI and current settings/field readback |
