Difference between revisions of "PolHe3 Punch List For Restart"
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** [UVa] Xiaochao, Gordon?, Chris J?, | ** [UVa] Xiaochao, Gordon?, Chris J?, | ||
+ | == Tasks to complete before we get back on-site == | ||
+ | * These will likely require OSPs to be written up and approved: | ||
+ | ** Remove/replace target enclosure panels | ||
+ | ** Laser/optics work | ||
+ | ** Mounting a new cell (not an immediate task) [RadCon involvement too] | ||
+ | ** Install collimator for 1-pass running | ||
+ | ** EPR photo diode replacement? | ||
+ | == Pre-beam Target Work == | ||
+ | * Restore items noted in [https://logbooks.jlab.org/entry/3809218 HCLOG 3809218] when site access is restored. [Brad] | ||
− | + | * Order spectrum analyzer for transverse configuration ASAP [Junhao] | |
− | * | + | |
+ | * Laser status? [Junhao, JP] | ||
+ | ** One laser needs repair (Junhao will follow up on whether we should/can ship it to Raytum?) | ||
+ | ** Three new lasers require modifications/updates to our existing laser control software. These changes must be integrated with the existing EPICS logging that has been added to the our laser control software. [Junhao will follow-up on this] | ||
− | |||
* Test Kepco in current mode (Bill) | * Test Kepco in current mode (Bill) | ||
+ | ** New power supply is now on-site at JLab | ||
** New filter (for 180 Hz) to install for current mode operation fix. Can always go to voltage mode if it doesn't work. | ** New filter (for 180 Hz) to install for current mode operation fix. Can always go to voltage mode if it doesn't work. | ||
** Establish/verify a known-good production mode | ** Establish/verify a known-good production mode | ||
+ | |||
+ | * AnywhereUSB bridge : Contact with Target readbacks through AnywhereUSB USB bridge still drop out on occasion | ||
+ | ** Junhao will document a couple of failure modes and (possible) fixes | ||
+ | |||
+ | * Prep a new target cell [Chris J., Todd?, Arun] | ||
+ | ** Chris working on characterizing Tommy and Butterball -- needs to get back in his Lab to wrap things up. | ||
+ | ** Will plan to get things finalized by early June | ||
+ | ** Do we need any hardware at JLab to have a cell ready [Arun] | ||
+ | |||
+ | * NMR issues | ||
+ | ** Hardware issues? | ||
+ | ** NMR Calibration Constants : Verify that calibration constants and input values associated with NMR and other polarimetry are consistent and will be correct when the software is restarted | ||
+ | ***[https://logbooks.jlab.org/entry/3796178] [https://logbooks.jlab.org/entry/3795421] [https://logbooks.jlab.org/entry/3795982] [https://logbooks.jlab.org/entry/3796117] [https://logbooks.jlab.org/entry/3796111] (Bill, Junhao, Arun) | ||
+ | *** Add list of calibration runs and what constants apply to what production runs here: [[PolHe3_Polarization_Measurements]] | ||
* pNMR issues | * pNMR issues | ||
− | ** Hardware : Check | + | ** Hardware : Check pNMR instruments to make sure they working properly. Fixes? |
− | ** | + | ** pNMR System Check: Follow procedure in [https://logbooks.jlab.org/entry/3797950] |
− | ** | + | ** pNMR Online analysis: Using Labview program to analysis pNMR FID signal (see [https://logbooks.jlab.org/entry/3807141]); Need to create a archived EPICS variable to record polarization measurement results from pNMR. (might need Brad’s help) |
* EPR problems : [https://logbooks.jlab.org/entry/3793821] saw some progress on Tuesday [https://logbooks.jlab.org/entry/3796852], but issues remain. | * EPR problems : [https://logbooks.jlab.org/entry/3793821] saw some progress on Tuesday [https://logbooks.jlab.org/entry/3796852], but issues remain. | ||
Line 31: | Line 57: | ||
** It would be good to write up a procedure to streamline this replacement procedure for us and RadCon | ** It would be good to write up a procedure to streamline this replacement procedure for us and RadCon | ||
** Maybe design a new mount for the photodiode replacing the old mount designed for the fiber bundle | ** Maybe design a new mount for the photodiode replacing the old mount designed for the fiber bundle | ||
− | |||
− | |||
− | |||
− | |||
* Target Lasers : | * Target Lasers : | ||
Line 40: | Line 62: | ||
** Check laser alignment | ** Check laser alignment | ||
** Implement another laser spectrometer for transverse polarization | ** Implement another laser spectrometer for transverse polarization | ||
+ | |||
+ | * Target work: | ||
+ | ** NMR checkout/fixes | ||
+ | ** EPR checkout/fixes | ||
+ | ** Spin up curves for all 4 polarization directions, configurations | ||
== Pending Issues == | == Pending Issues == | ||
Line 55: | Line 82: | ||
** '''Is there a way to shift the reference cell position before beam starts?''' | ** '''Is there a way to shift the reference cell position before beam starts?''' | ||
− | |||
* iochc10 issues : Green now: Rebooted 3/2/20 with Dave Gaskell assistance. OPs wished to reboot hung iochc10 [https://logbooks.jlab.org/entry/3795636], noted in December as well [https://logbooks.jlab.org/entry/3745818] | * iochc10 issues : Green now: Rebooted 3/2/20 with Dave Gaskell assistance. OPs wished to reboot hung iochc10 [https://logbooks.jlab.org/entry/3795636], noted in December as well [https://logbooks.jlab.org/entry/3745818] |
Revision as of 13:33, 18 May 2020
Onsite Personnel
NOTE: I'm not 100% sure of what restrictions on 'visitor' access will be imposed by the Lab.
Make sure your training and Site Visit status is still current to avoid delays.
- Stationed here w/ polhe3 as a priority
- Brad, JP, Junhao, Mingyu, Murchhana, ???
- Bill, Arun, Jixie, Carlos(?), ??? ("full-time", "part-time"?)
- Offsite, but not too far away:
- [W&M] Todd,
- [UVa] Xiaochao, Gordon?, Chris J?,
Tasks to complete before we get back on-site
- These will likely require OSPs to be written up and approved:
- Remove/replace target enclosure panels
- Laser/optics work
- Mounting a new cell (not an immediate task) [RadCon involvement too]
- Install collimator for 1-pass running
- EPR photo diode replacement?
Pre-beam Target Work
- Restore items noted in HCLOG 3809218 when site access is restored. [Brad]
- Order spectrum analyzer for transverse configuration ASAP [Junhao]
- Laser status? [Junhao, JP]
- One laser needs repair (Junhao will follow up on whether we should/can ship it to Raytum?)
- Three new lasers require modifications/updates to our existing laser control software. These changes must be integrated with the existing EPICS logging that has been added to the our laser control software. [Junhao will follow-up on this]
- Test Kepco in current mode (Bill)
- New power supply is now on-site at JLab
- New filter (for 180 Hz) to install for current mode operation fix. Can always go to voltage mode if it doesn't work.
- Establish/verify a known-good production mode
- AnywhereUSB bridge : Contact with Target readbacks through AnywhereUSB USB bridge still drop out on occasion
- Junhao will document a couple of failure modes and (possible) fixes
- Prep a new target cell [Chris J., Todd?, Arun]
- Chris working on characterizing Tommy and Butterball -- needs to get back in his Lab to wrap things up.
- Will plan to get things finalized by early June
- Do we need any hardware at JLab to have a cell ready [Arun]
- NMR issues
- Hardware issues?
- NMR Calibration Constants : Verify that calibration constants and input values associated with NMR and other polarimetry are consistent and will be correct when the software is restarted
- pNMR issues
- Hardware : Check pNMR instruments to make sure they working properly. Fixes?
- pNMR System Check: Follow procedure in [6]
- pNMR Online analysis: Using Labview program to analysis pNMR FID signal (see [7]); Need to create a archived EPICS variable to record polarization measurement results from pNMR. (might need Brad’s help)
- EPR problems : [8] saw some progress on Tuesday [9], but issues remain.
- Tentative plan now is to continue the d2n program by replacing the photo-diode that is placed directly on the pumping chamber (we have many spares).
- It would be good to write up a procedure to streamline this replacement procedure for us and RadCon
- Maybe design a new mount for the photodiode replacing the old mount designed for the fiber bundle
- Target Lasers :
- Check laser power and wavelength
- Check laser alignment
- Implement another laser spectrometer for transverse polarization
- Target work:
- NMR checkout/fixes
- EPR checkout/fixes
- Spin up curves for all 4 polarization directions, configurations
Pending Issues
- Fix the epics variable for target field angle. This is the PV which is calculated from the coils currents that is in the startOfRun entries. It needs a new formula since we changes the coil orientation (Bill)
- Verify that all other EPICS channels are present and are still being archived [Brad]
- Look at trigger related signals on the scope under high load (reftime extra pules, FADC reftime-shaper pileup?, NGC noise/rate questions) [Brad]
- Target Ladder software must throw an error on a 'voltage' readback mismatch! [10] -- Ethan working on this
- Get 3H07B Harp repaired [11] [12]; and a puzzle [13]
- This is being pursued by Brad, Thia, et al. Still trying to make sure it gets on EES/IC's pre-beam repair list.
- https://logbooks.jlab.org/entry/3807201 Has Arun's note about the unfortunate reference cell alignment vs. the rest of the target ladder.
- NOTE: "Shift Leader must request a beam that is shifted horizontally to the beam left side by 2 mm to prevent scraping."
- Is there a way to shift the reference cell position before beam starts?
- iochc10 issues : Green now: Rebooted 3/2/20 with Dave Gaskell assistance. OPs wished to reboot hung iochc10 [14], noted in December as well [15]
- Confirm relevant procedures have been updated at MCC (Gaskell, Paul V.?)
- This runs the Moller cryo controls and should not be rebooted without expert oversight (does not impact operations). D. Gaskell is looking into getting this addressed properly with OPs.
- Compton related items in Hall C beam steer-up procedure still cause confusion between MCC and Shift Crew -- Gaskell?
- Procedures need to be updated at MCC
- Verify that inputs to 'Scale32'/G0 scalers (ie ROC5) are > 10ns in width. (Brad, Steve)
- replace the G0 scalers with something newer/better (SIS38xx or similar)
- Online analysis software ready to go? (Sylvester?, Brad)
- Most should be fine, but are we missing any 'physics' plots?
Pre-beam punchlist
Copied from pre-beam punchlist done just before MC6 shutdown. Some items should be completed but require verification/confirmation.
Techs w/ RadCon [Todd (or designate) for cooling jets]
- Turn on turbos for downstream beamline
- Turn on turbos for SHMS and HMS spectrometer vacuums
- Remove the guards on the SHMS and HMS entrance windows (verify)
- Remove the guards on the both upstream and downstream beamline windows (verify)
- Ensure the beamline window cooling jets are in position and on (verify)
- Ensure the target window cooling jets are in position and on (verify)
- ??
Miscellaneous
- [RadCon, RC] RadCon checklist
- [Gaskell] Beamline checklist
- [Brad] Detector/DAQ checklist
- [Walter] Hall checklist
- [OPS, RC] Schedule hot checkout of Hall C arc magnets/power-supplies
- [OPS, RC] Verify all relevant FSDs that may have been masked for the down are known about and ready to unmasked when appropriate
- [Lassiter] Enable all spectrometer magnet supplies, restore production settings for Cryo
- [Gaskell] Moller cooldown
- [Brad] Double check that rotation is enabled in the GUIs for both spectrometers
- [Brad] Ramp all SHMS and HMS magnets to something modest (quick check), or to first kinematic. For example:
- SHMS: 11.0deg, 7.5 GeV/c
- HMS: 13.5deg, 4.2 GeV/c
- NOTE: Coordinate with the target group on the appropriate HB setting so we don't interfere with any target pumping.
- [Techs, Brad?] Do a final check to ensure that there are no potential issues with remote spectrometer rotation
- Restart main alarm handler (resets masked channels)
- Restart target alarm handler (if needed)
- ??