Difference between revisions of "RC Update and Run Plan for Aug 13, 2020"
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| − | + | *Spectral waveform peak oscillation noted during owl shift [https://logbooks.jlab.org/entry/3826153 oscillation] | |
| + | *Ethan found one of the drive what locked up and was continuously turning [https://logbooks.jlab.org/entry/3826594 QWP_driver] | ||
| + | *Mingyu check the pulse NMR during an access [https://logbooks.jlab.org/entry/3826516 Pulse_NMR] | ||
| + | * I found the power strip the camera/light was turned off. Turned on and can view the target [[https://logbooks.jlab.org/entry/3826483]] | ||
*The HMS was to 13.50. There were some issues with the Drive Controllers. They needed to be reset by Joe in the Hall | *The HMS was to 13.50. There were some issues with the Drive Controllers. They needed to be reset by Joe in the Hall | ||
[https://logbooks.jlab.org/entry/3826555 Drive_Controllers] | [https://logbooks.jlab.org/entry/3826555 Drive_Controllers] | ||
| + | [https://logbooks.jlab.org/entry/3826615 HMS angle] | ||
| + | *HMS momentum was set to -4.2 Gev/c | ||
| + | https://logbooks.jlab.org/entry/3826528 | ||
| − | |||
*Reference cell was pumped with Hydrogen [[https://logbooks.jlab.org/entry/3826687 reference_cell]] | *Reference cell was pumped with Hydrogen [[https://logbooks.jlab.org/entry/3826687 reference_cell]] | ||
Revision as of 16:11, 13 August 2020
Contents
RC Meeting Information
RC Daily Meetings are at 4:15 PM, remote
Wednesday Aug 13 2020.
General updates
- Spectral waveform peak oscillation noted during owl shift oscillation
- Ethan found one of the drive what locked up and was continuously turning QWP_driver
- Mingyu check the pulse NMR during an access Pulse_NMR
- I found the power strip the camera/light was turned off. Turned on and can view the target [[1]]
- The HMS was to 13.50. There were some issues with the Drive Controllers. They needed to be reset by Joe in the Hall
- HMS momentum was set to -4.2 Gev/c
https://logbooks.jlab.org/entry/3826528
- Reference cell was pumped with Hydrogen [reference_cell]
Pending problem
- Beam trip rate
Recent polarization measurements
Current Run Plan
Normal Production running
- Prerequisites
- Make sure operational restrictions are followed.
- Make sure the raster size is correct (4-4.5)
- Monitor beam parameters/configuration very often and post an entry like this at the beginning of your shift and when run conditions have changed
- Running on cell targets: raster always ON (4-4.5, size will be determined by the scraping checks), orbit locks ON, current ramp rate 1 muA/sec
- Always take 120Hz of EDTM
- Fill the BTA with realistic numbers. If the desired beam current is not delivered prorate your ABUs!
- Change the IHWP every 4 hours when running on glass cells
- Run plan
- Since we have been down since 9 am, we likely want to start back with the Beam / Raster checkout (short procedure)
- Production on 3He; if not able to reach requested current, pro-rate the ABUs
Notes for tomorrow's 7:45 meeting
Future
- We are on the schedule to switch to 1st pass on the week of Aug 24 (Monday/ Tuesday). Need about ~ 3 days at 1st pass and would like to switch back to 5th pass before the weekend.
- EPR diode good for now, but check for future planned accesses.
- If Hall will have opening for 1+ hours, let Simona know as there is work to do on the cerenkov.
