Difference between revisions of "RC Meeting, Saturday, October 02 , 2021"

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(Created page with "= RC Meeting Information = <b> RC Daily Meetings are at 10 am, remote </b> * Bluejeans remote connection information: To join the Meeting: https://bluejeans.com/86143992...")
 
(→‎Current Issues)
 
(20 intermediate revisions by the same user not shown)
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= Accelerator Status =
 
= Accelerator Status =
−
# --
+
# Beam has been mostly stable, and quality has been improving gradually.
−
#* --
+
#* See [https://logbooks.jlab.org/entry/3915997 Oct 01 Day Beam Summary], [https://logbooks.jlab.org/entry/3916245 Oct 01 Swing Beam Summary], [https://logbooks.jlab.org/entry/3916345 Oct 02 Owl Beam Summary]
 +
 
 
= Hall C Status =
 
= Hall C Status =
−
# --
+
# No showstoppers reported
−
#* --
+
# I haved scheduled SHMS rotation to 5.5 deg for Sunday Oct 03 09:00 am (tomorrow)
 +
 
 
= Current Run Plan =
 
= Current Run Plan =
−
# Oct 01 Day/Swing --> Oct 02 Owl/Day/Swing:
+
# Oct 02 Day/Swing --> Oct 03 Owl/Day:
−
#* Contine data-taking at current PION-LT kinematic setting ( low eps, Q2=6 GeV2, W=3.19, x=0.39 )  
+
#* Continue data-taking at current PION-LT kinematic setting ( low eps, Q2=6 GeV2, W=3.19, x=0.39 ) until tomorrow Sunday 09:00 am
−
#** Data collected as of 08:00 today: ??% of the total PAC approved beam charge accumulated. We --??---  85 % of beam charge before lowering the beam current to ~45 uA for the remainder of this kinematic until Sunday Morning.
+
#** As of Oct 02 mid-Owl shift, we have accumulated ~85 % of the approved beam charge  
−
#** From Jacob's estimates during Oct 01 Owl shift, we accumulated ~ 5 % / shift @ 60 uA of very stable beam. This would mean that we would reach ~85 % of beam charge by Saturday Oct 02 mid-Owl shift assuming beam keeps steady.  (<span style="color:red"> '''PENDING''' </span>)
+
#** Shift crew has requested beam current to be lowered to 45 uA for the remainder of this kinematic setting
−
#** After 85% of beam charge has been accumulated (<span style="color:red"> this is contingent upon beam stability throughout weekend </span>), request to lower beam current to 45 uA to take the remaining data until Sunday Morning --> https://logbooks.jlab.org/entry/3914672  (<span style="color:red"> '''PENDING''' </span>)
+
#* As of End-of-Owl Shift today, we have accumulated (thanks Jacob):
−
# SHMS Rotation to 5.5 deg has been scheduled to Hall C for Sunday Morning at 9:00 am (<span style="color:darkgreen"> '''CLEARED''' </span>)
+
#** 8669 Pion Events (86.7%), 19997.68 mC charge delivered (87.1%) <br> where the total gained across the shift are: 589 Pion Events gained (5.9%), 1306.02 mC charge delivered gained (5.7%) <br>
−
#* Will contact Walter Kellner after RC meeting today to determine availability of techs on weekend to co-ordinate entrance to Hall. Will also need to contact Radcon today to give a specific time range at which rotation will take place on Sunday Morning.  (<span style="color:red"> '''PENDING''' </span>)
+
# SHMS Rotation to 5.5 deg has been scheduled for a "Controlled Access" <b>Oct 03 Sunday Morning at 9:00 am </b> (<span style="color:darkgreen"> '''CLEARED''' </span>)
−
#** Rotation will require 2 beamline spotters (1 on top of HMS platform and one on the floor in-between HMS/SHMS)
+
#* Have contacted Amy Comer/Steve Lassiter and it was concluded that rotation does require 2 techs for beamline spotting during rotation
−
#** Garth will volunteer to be a beamline spotter in case in case one of the techs cannot come in on a weekend, but an expert spotter (tech) is still required at the pivot
+
#** 1 tech on top of HMS platform + 1 tech on floor (in-between HMS/SHMS spectrometers as closes as possible to the pivot area)  
−
#** If possible, do rotation in "Controlled Access" (spotter in pivot will have to use ALARA to minimize time near radiation area),  otherwise, will go into "Restricted Access" (takes a bit longer)
+
#** Garth will volunteer to be a beamline spotter in case additional beamline spotters are needed
 +
#* Have contacted Walter Kellner and the 2 techs can ONLY come in on Sunday
 +
#* Have contacted Dave Hamlette (RADCON), and they will provide support as well
 +
#* Brad will also be in the Hall during this access to install spare HCCAM03 as the previous one has failed --> [https://logbooks.jlab.org/entry/3915871 HCCAM03 Broken]
  
 
= Current Issues =
 
= Current Issues =
 
# Target ladder camera was identified to be bad: Joe Beaufait will purchase a replacement in the next funding cycle (<span style="color:red"> '''PENDING''' </span>)
 
# Target ladder camera was identified to be bad: Joe Beaufait will purchase a replacement in the next funding cycle (<span style="color:red"> '''PENDING''' </span>)
 
#* Still need to follow-up with Joe about when the purchase can be done.
 
#* Still need to follow-up with Joe about when the purchase can be done.
 +
# HCCAM03 Hall Camera has failed and needs replacement --> [https://logbooks.jlab.org/entry/3915871 HCCAM03 Broken] (<span style="color:red"> '''PENDING''' </span>)
 +
#* Brad will come in during the Hall C "Controlled Access" scheduled on Sunday 9:00 am to install spare camera.
  
 
= Special Requests =
 
= Special Requests =
−
# Contact Ellen Becker if there is an opportunity to access the hall (longer than 4 hours). This is for diagnosing the SHMS power supply.
+
# Contact Ellen Becker if there is an opportunity to access the hall (longer than 4 hours). This is for diagnosing the SHMS power supply. (<span style="color:red"> '''PENDING''' </span>)

Latest revision as of 09:17, 2 October 2021

RC Meeting Information

RC Daily Meetings are at 10 am, remote

  • 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

Accelerator Status

  1. Beam has been mostly stable, and quality has been improving gradually.

Hall C Status

  1. No showstoppers reported
  2. I haved scheduled SHMS rotation to 5.5 deg for Sunday Oct 03 09:00 am (tomorrow)

Current Run Plan

  1. Oct 02 Day/Swing --> Oct 03 Owl/Day:
    • Continue data-taking at current PION-LT kinematic setting ( low eps, Q2=6 GeV2, W=3.19, x=0.39 ) until tomorrow Sunday 09:00 am
      • As of Oct 02 mid-Owl shift, we have accumulated ~85 % of the approved beam charge
      • Shift crew has requested beam current to be lowered to 45 uA for the remainder of this kinematic setting
    • As of End-of-Owl Shift today, we have accumulated (thanks Jacob):
      • 8669 Pion Events (86.7%), 19997.68 mC charge delivered (87.1%)
        where the total gained across the shift are: 589 Pion Events gained (5.9%), 1306.02 mC charge delivered gained (5.7%)
  2. SHMS Rotation to 5.5 deg has been scheduled for a "Controlled Access" Oct 03 Sunday Morning at 9:00 am ( CLEARED )
    • Have contacted Amy Comer/Steve Lassiter and it was concluded that rotation does require 2 techs for beamline spotting during rotation
      • 1 tech on top of HMS platform + 1 tech on floor (in-between HMS/SHMS spectrometers as closes as possible to the pivot area)
      • Garth will volunteer to be a beamline spotter in case additional beamline spotters are needed
    • Have contacted Walter Kellner and the 2 techs can ONLY come in on Sunday
    • Have contacted Dave Hamlette (RADCON), and they will provide support as well
    • Brad will also be in the Hall during this access to install spare HCCAM03 as the previous one has failed --> HCCAM03 Broken

Current Issues

  1. Target ladder camera was identified to be bad: Joe Beaufait will purchase a replacement in the next funding cycle ( PENDING )
    • Still need to follow-up with Joe about when the purchase can be done.
  2. HCCAM03 Hall Camera has failed and needs replacement --> HCCAM03 Broken ( PENDING )
    • Brad will come in during the Hall C "Controlled Access" scheduled on Sunday 9:00 am to install spare camera.

Special Requests

  1. Contact Ellen Becker if there is an opportunity to access the hall (longer than 4 hours). This is for diagnosing the SHMS power supply. ( PENDING )
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