Difference between revisions of "RC Update and Run Plan for Aug 13, 2020"
From HallCWiki
(→Current Run Plan) |
(→General updates) |
||
(10 intermediate revisions by 2 users not shown) | |||
Line 3: | Line 3: | ||
<b> Wednesday Aug 13 2020. </b> | <b> Wednesday Aug 13 2020. </b> | ||
+ | |||
=General updates= | =General updates= | ||
+ | *Spectral waveform peak oscillation noted during owl shift [https://logbooks.jlab.org/entry/3826153 oscillation] | ||
+ | *Ethan found one of the rotation stage drives had 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 QWP rotation stage camera/light was turned off on the platform. Turned on and can view that camera now [https://logbooks.jlab.org/entry/3826483] | ||
+ | *The HMS was to -4.2 GeV/c @ 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/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]] | ||
== Pending problem == | == Pending problem == | ||
Line 13: | Line 26: | ||
== Recent polarization measurements == | == Recent polarization measurements == | ||
+ | |||
+ | = Current Run Plan = | ||
+ | |||
+ | <b> Normal Production running </b> | ||
+ | |||
+ | *<b>Prerequisites</b> | ||
+ | |||
+ | <ul> | ||
+ | |||
+ | *Make sure [http://opsweb.acc.jlab.org/internal/ops/ops_webpage/restrictions/ops_restrictions.html 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 [https://logbooks.jlab.org/entry/3777457 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 | ||
+ | |||
+ | </ul> | ||
+ | |||
+ | *<b>Run plan</b> | ||
+ | |||
+ | <ul> | ||
+ | *Since we have been down since 9 am, we likely want to start back with the Beam / Raster checkout (short procedure) | ||
+ | [https://hallcweb.jlab.org/wiki/index.php/Beam_and_Raster_Checkout_for_A1n/d2n_(Short_Procedure) Checkout] | ||
+ | |||
+ | * Production on 3He; if not able to reach requested current, pro-rate the ABUs | ||
+ | |||
+ | </ul> | ||
+ | |||
+ | === 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. | ||
+ | |||
+ | ==== Hall Access ==== | ||
+ | |||
+ | == When there is a down:== |
Latest revision as of 16:32, 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 rotation stage drives had locked up and was continuously turning QWP_driver
- Mingyu check the pulse NMR during an access Pulse_NMR
- I found the power strip the QWP rotation stage camera/light was turned off on the platform. Turned on and can view that camera now [1]
- The HMS was to -4.2 GeV/c @ 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.