Difference between revisions of "Charge Feedback Parity DAQ"
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[[Image:parity-daq2.jpg|400px|System run via ssh tunneling in Feb 2020]] | [[Image:parity-daq2.jpg|400px|System run via ssh tunneling in Feb 2020]] | ||
| − | === Useful Commands === | + | === Useful Commands (on cdaq machines) === |
* <code>go_parity</code> Injector parity settings (IHWP status, Hall Laser IA settings, etc) | * <code>go_parity</code> Injector parity settings (IHWP status, Hall Laser IA settings, etc) | ||
* <code>go_parity_feedback</code> Bring up the Parity DAQ charge feedback VNC session (if Hall C is running alone; see below) | * <code>go_parity_feedback</code> Bring up the Parity DAQ charge feedback VNC session (if Hall C is running alone; see below) | ||
* <code>go_Qasym_stripchart</code> Bring up the Hall C Charge Asym monitoring stripcharts (these should always be up on the big wall screens) | * <code>go_Qasym_stripchart</code> Bring up the Hall C Charge Asym monitoring stripcharts (these should always be up on the big wall screens) | ||
| − | === | + | === Procedure to run the flipper script (from the Hall A VNC session) === |
| − | *This | + | *This script needs to be run when the IHWP state changes and Hall A is not controlling our feedback. |
| − | *stop the run ( | + | *Call Hall B at least 30 minutes before flipping to give them a heads up. |
| − | * <code> | + | *When ready to flip: |
| + | **'''stop the CODA run''' for the parity DAQ (VNC open on HCDesk2 workspace 2). | ||
| + | **Then call Hall B again to let them know the flip is about to start. | ||
| + | **Then call MCC and ask them to flip the IHWP. | ||
| + | *Confirm the IHWP has been flipped. | ||
| + | * <code> Open (or locate) a terminal in the VNC session from above (VNC open on HCDesk2 workspace 2). It should be running as apar@adaq2</code>. | ||
* <code> cd ~/feedback2019</code> | * <code> cd ~/feedback2019</code> | ||
| − | * <code> ./FlipPCvaluesHallC</code> | + | * <code> ./FlipPCvaluesHallC</code> You should see the hallc_IACell_setting variable change on the wall |
* <code> ./checkPCvaules</code> | * <code> ./checkPCvaules</code> | ||
| − | *start a run (parity daq) | + | *'''start a run''' (parity daq) |
| + | * Make an HCLOG entry | ||
| + | |||
| + | |||
| + | * Log entry with some extra information on restarting the processes if the IA Cell stops updating: https://logbooks.jlab.org/entry/3852609 | ||
== Contacts == | == Contacts == | ||
Latest revision as of 05:00, 21 September 2020
The Charge Asymmetry Feedback system is controlled by the Hall A Parity DAQ.
When Hall A is in production mode, the Hall A shift crew will manage the Parity DAQ and control feedback for both Hall A and Hall C beams.
If the Hall A Counting House is not staffed, then Hall C must negotiate with the Parity group to ensure that the Parity DAQ is still running.
- This must be running for all 3He production data! (And should be running in general.)
- The state of this system is monitored in the Hall C alarm handler, and can be overseen by the Hall C Shift crew using the stripchart on the left large wall display (see below).
Instructions
- Parity DAQ Running - with Hall C Feedback passively running (Aug 02, 2020 HClog entry)
- Bring up this vnc session using
go_parity_feedbackunder the cdaq account.
- Hall C running parity DAQ for charge feedback (Feb 12, 2020 HCLog entry) -- OLD, just for reference.
Useful Commands (on cdaq machines)
go_parityInjector parity settings (IHWP status, Hall Laser IA settings, etc)go_parity_feedbackBring up the Parity DAQ charge feedback VNC session (if Hall C is running alone; see below)go_Qasym_stripchartBring up the Hall C Charge Asym monitoring stripcharts (these should always be up on the big wall screens)
Procedure to run the flipper script (from the Hall A VNC session)
- This script needs to be run when the IHWP state changes and Hall A is not controlling our feedback.
- Call Hall B at least 30 minutes before flipping to give them a heads up.
- When ready to flip:
- stop the CODA run for the parity DAQ (VNC open on HCDesk2 workspace 2).
- Then call Hall B again to let them know the flip is about to start.
- Then call MCC and ask them to flip the IHWP.
- Confirm the IHWP has been flipped.
Open (or locate) a terminal in the VNC session from above (VNC open on HCDesk2 workspace 2). It should be running as apar@adaq2.cd ~/feedback2019./FlipPCvaluesHallCYou should see the hallc_IACell_setting variable change on the wall./checkPCvaules- start a run (parity daq)
- Make an HCLOG entry
- Log entry with some extra information on restarting the processes if the IA Cell stops updating: https://logbooks.jlab.org/entry/3852609
Contacts
- Bill Henry (Hall C)
- Cameron Clarke (Hall A)
- Caryn Palatchi (Hall A)
