Difference between revisions of "How to Take a Moller Run"
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This document describes the steps to be taken by a Hall-C experimenter performing a Møller beam polarization measurement during NPS running. There is a complimentary procedure which the MCC operators will follow, [http://opsntsrv.acc.jlab.org/ops_docs/online_document_files/MCC_online_files/HallC_moller_pol_measurement_proc.pdf] | This document describes the steps to be taken by a Hall-C experimenter performing a Møller beam polarization measurement during NPS running. There is a complimentary procedure which the MCC operators will follow, [http://opsntsrv.acc.jlab.org/ops_docs/online_document_files/MCC_online_files/HallC_moller_pol_measurement_proc.pdf] | ||
| − | * Record Injector Parameters: during some period of "normal" NPS running, record the conditions of the polarized source and the state of the beam to the other halls. This will allow us to verify that we are taking Møller data in a state as close as possible to NPS production data-taking conditions. | + | * '''Record Injector Parameters:''' during some period of "normal" NPS running, record the conditions of the polarized source and the state of the beam to the other halls. This will allow us to verify that we are taking Møller data in a state as close as possible to NPS production data-taking conditions. |
# Login: ssh cdaq@cdaql2. Standard cdaq password. | # Login: ssh cdaq@cdaql2. Standard cdaq password. | ||
# cd moller/anal/nps | # cd moller/anal/nps | ||
| Line 13: | Line 13: | ||
# Capture this screen or transcribe its contents to the hclog | # Capture this screen or transcribe its contents to the hclog | ||
| − | * Møller GUIs: Start the Møller GUIs | + | * '''Møller GUIs:''' Start the Møller GUIs |
# Login: ssh cvxwrks@cdaql6. Standard cvxwrks password. | # Login: ssh cvxwrks@cdaql6. Standard cvxwrks password. | ||
# cd MEDM/moller | # cd MEDM/moller | ||
| Line 29: | Line 29: | ||
### ./hv.tcl | ### ./hv.tcl | ||
| − | * Møller BPMs | + | * '''More Møller BPMs:''' Open up this nifty PAW script |
## ssh -Y cdaq@cdaql6 | ## ssh -Y cdaq@cdaql6 | ||
## cd ~/Users/gaskelld/BPM/kumac | ## cd ~/Users/gaskelld/BPM/kumac | ||
| Line 35: | Line 35: | ||
## exe moller live bpms | ## exe moller live bpms | ||
| − | * Verify the | + | * '''Verify the target magnetstatus: Check that the Møller solenoid is cold and ready. |
| − | * ''Call MCC:'' tell them that you are getting ready for a Møller run. They will take a "zero pos" of the Hall C line and call you back when they are ready for you to retract the target. | + | * '''Call MCC:''' tell them that you are getting ready for a Møller run. They will take a "zero pos" of the Hall C line and call you back when they are ready for you to retract the target. |
| − | * ''Setting Up:'' At this point, MCC should start loading in the Møller optics. While they are doing that you can: | + | * '''Setting Up:''' At this point, MCC should start loading in the Møller optics. While they are doing that you can: |
## Ask MCC to turn off the fast raster. | ## Ask MCC to turn off the fast raster. | ||
## Do we have to turn off any NPS or HMS HV's??? | ## Do we have to turn off any NPS or HMS HV's??? | ||
## Check BCM 2 Range: Carefully note the current status of the gain setting for BCM 2 and then change it to gain setting 5. The selector switch is on the left-hand side of a chassis in rack CH03B11 in the electronics room. Make sure to record in the hclog that you have done this carefully noting the original gain setting and the new one. | ## Check BCM 2 Range: Carefully note the current status of the gain setting for BCM 2 and then change it to gain setting 5. The selector switch is on the left-hand side of a chassis in rack CH03B11 in the electronics room. Make sure to record in the hclog that you have done this carefully noting the original gain setting and the new one. | ||
## Check BCM 17 gain. This can be checked via JMenu. | ## Check BCM 17 gain. This can be checked via JMenu. | ||
Revision as of 09:40, 16 August 2023
Hall C Moller Step-By-Step Guide: How to take a Moller Run
Abstract
A step-by-step guide for shift personnel to follow in order to take a Møller run. It is assumed that the polarimeter has already been set up and tuned for the present beam energy by an expert.
HOW TO TAKE A Møller RUN
This document describes the steps to be taken by a Hall-C experimenter performing a Møller beam polarization measurement during NPS running. There is a complimentary procedure which the MCC operators will follow, [1]
- Record Injector Parameters: during some period of "normal" NPS running, record the conditions of the polarized source and the state of the beam to the other halls. This will allow us to verify that we are taking Møller data in a state as close as possible to NPS production data-taking conditions.
- Login: ssh cdaq@cdaql2. Standard cdaq password.
- cd moller/anal/nps
- ./GetEpics.pl
- Capture this screen or transcribe its contents to the hclog
- Møller GUIs: Start the Møller GUIs
- Login: ssh cvxwrks@cdaql6. Standard cvxwrks password.
- cd MEDM/moller
- ./start moller screens.sh
- You should now see the main Møller control screen, the Møller BPMS, and Møller HV.
- The screens may be started individually if needed.
- Møller GUI
- cd MEDM/moller
- ./moller.adl
- BPMs
- cd MEDM/moller
- ./BPMs for moller 2019.adl
- HVs
- cd ~/EpicsHL/HV/shms moller
- ./hv.tcl
- Møller GUI
- More Møller BPMs: Open up this nifty PAW script
- ssh -Y cdaq@cdaql6
- cd ~/Users/gaskelld/BPM/kumac
- paw
- exe moller live bpms
- Verify the target magnetstatus: Check that the Møller solenoid is cold and ready.
- Call MCC: tell them that you are getting ready for a Møller run. They will take a "zero pos" of the Hall C line and call you back when they are ready for you to retract the target.
- Setting Up: At this point, MCC should start loading in the Møller optics. While they are doing that you can:
- Ask MCC to turn off the fast raster.
- Do we have to turn off any NPS or HMS HV's???
- Check BCM 2 Range: Carefully note the current status of the gain setting for BCM 2 and then change it to gain setting 5. The selector switch is on the left-hand side of a chassis in rack CH03B11 in the electronics room. Make sure to record in the hclog that you have done this carefully noting the original gain setting and the new one.
- Check BCM 17 gain. This can be checked via JMenu.
