Difference between revisions of "RC meeting and Run Plan, Tuesday Nov 20"

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(Created page with "= RC Meeting Information = <b> RC Daily Meetings are at 4:30 PM, 2nd floor Counting House Meeting Room </b> * Bluejeans remote connection information: To join the Meeting:...")
 
(Planned Accelerator Configuration Changes)
 
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= Current Status =
 
= Current Status =
*
+
* Taking kinematic [https://hallcweb.jlab.org/wiki/index.php/CSV_Fall_2018_Run_Plan#Kinematic_Group_15:_Q2_.3D_4.775_GeV2.2C_x_.3D_0.6 Group 15 (Q2 = 4.77, x = 0.6, pi+)]
 +
* [https://logbooks.jlab.org/entry/3628894 RC Daily Update Tuesday, November 20]
  
 
= Current Run Plan =
 
= Current Run Plan =
*
+
* Order of Kinematic Groups
 +
** [https://hallcweb.jlab.org/wiki/index.php/CSV_Fall_2018_Run_Plan#Kinematic_Group_15:_Q2_.3D_4.775_GeV2.2C_x_.3D_0.6 Group 15 (Q2 = 4.77, x = 0.6, pi+)]
 +
** [https://hallcweb.jlab.org/wiki/index.php/CSV_Fall_2018_Run_Plan#Kinematic_Group_11:_Q2_.3D_5_GeV2.2C_x_.3D_0.5 Group 11 (Q2 = 5.0, x = 0.5, pi+)]
 +
** [https://hallcweb.jlab.org/wiki/index.php/CSV_Fall_2018_Run_Plan#Kinematic_Group_12:_Q2_.3D_5_GeV2.2C_x_.3D_0.5 Group 12 (Q2 = 5.0, x = 0.5, pi-)]
  
 
= Notices in Effect for Shift Crew =
 
= Notices in Effect for Shift Crew =
*
+
* If the HV trips for SHMS S1Y5B contact Simona M. '''DO NOT change the HV from the nominal value!'''
 +
* Shift leaders, please fill out the check list once per shift!
 +
* It is no longer required to fill out the standard.kinematics file online, it is now done automagically
 +
* Split the large desired charge between multiple runs (~1 hour per run)
 +
* Listed currents are estimates. For runs at less than 60uA, increase current until SHMS singles rates are between 400k-500k.
 +
* How-to power cycle PLC I/O chassis: https://logbooks.jlab.org/entry/3625862, https://logbooks.jlab.org/entry/3625900
  
 
= Current Issues =
 
= Current Issues =
*
+
* Worsening of coincidence time resolution
 +
** [https://logbooks.jlab.org/entry/3625217 Cause of coin. time jitter (resolution loss) may have been found?]  -Brad S.
 +
** [https://logbooks.jlab.org/entry/3625390 Coincidence time after insertion of passive delay] -Dave G.
 +
** [https://logbooks.jlab.org/entry/3625474 Follow-up Re: Coincidence time after insertion of passive delay]  -Dave G. with comment from Dave M.
 +
** [https://logbooks.jlab.org/entry/3625832 More jitter tests -- nothing found on scope...] -Brad S.
 +
** [https://logbooks.jlab.org/entry/3626160 HMS/SHMS TOF resolutions using hodoscope beta] -Mark J.
 +
** [https://logbooks.jlab.org/entry/3626194 RF time and coincidence time] -Mark J.
 +
** [https://logbooks.jlab.org/entry/3626796 Yet more jitter tests -- found small issue w/ ref time, but nothing that impacts coin. times] -Brad S.
  
 
= Planned Accesses to the Hall =
 
= Planned Accesses to the Hall =
*
+
* Monday, Nov 26: aerogel change and HGC work needs to be coordinated with Walter K., we must be in restricted access for this work
  
 
= Planned Accelerator Configuration Changes =
 
= Planned Accelerator Configuration Changes =
*
+
* Sunday, Nov 25(?): Hall A goes offline and MCC wants to conduct high current beam study of energy spread at 40 uA.  It is unclear that we will be effected
 +
* Monday, Nov 26: Energy change to 1.86 GeV/pass, we will be moved over to 500 MHz laser.
  
 
= Special Requests =
 
= Special Requests =
*
+
* Harp scan at 3H07A and 3H07B with raster off to address possible issues with harp (https://logbooks.jlab.org/entry/3624463)

Latest revision as of 16:46, 21 November 2018

RC Meeting Information

RC Daily Meetings are at 4:30 PM, 2nd floor Counting House Meeting Room

  • Bluejeans remote connection information:
 To join the Meeting:
 https://bluejeans.com/861439920
 To join via Room System:
 Video Conferencing System: bjn.vc -or-199.48.152.152
 Meeting ID : 861439920
 To join via phone :
 1)  Dial:
   +1.408.740.7256 (US (San Jose))
   +1.888.240.2560 (US Toll Free))
   +1.408.317.9253 (US (Primary, San Jose))
   (see all numbers - http://bluejeans.com/numbers)
 2)  Enter Conference ID : 861439920

Useful Links

Current Status

Current Run Plan

Notices in Effect for Shift Crew

  • If the HV trips for SHMS S1Y5B contact Simona M. DO NOT change the HV from the nominal value!
  • Shift leaders, please fill out the check list once per shift!
  • It is no longer required to fill out the standard.kinematics file online, it is now done automagically
  • Split the large desired charge between multiple runs (~1 hour per run)
  • Listed currents are estimates. For runs at less than 60uA, increase current until SHMS singles rates are between 400k-500k.
  • How-to power cycle PLC I/O chassis: https://logbooks.jlab.org/entry/3625862, https://logbooks.jlab.org/entry/3625900

Current Issues

Planned Accesses to the Hall

  • Monday, Nov 26: aerogel change and HGC work needs to be coordinated with Walter K., we must be in restricted access for this work

Planned Accelerator Configuration Changes

  • Sunday, Nov 25(?): Hall A goes offline and MCC wants to conduct high current beam study of energy spread at 40 uA. It is unclear that we will be effected
  • Monday, Nov 26: Energy change to 1.86 GeV/pass, we will be moved over to 500 MHz laser.

Special Requests