Difference between revisions of "Run Planning Meeting Notes, Jan 25-Jan 31, 2018"

From GlueXWiki
Jump to: navigation, search
m
Line 22: Line 22:
 
#** RADCON test
 
#** RADCON test
 
#** TPOL noise
 
#** TPOL noise
#** TAGH cable connection
+
#** TAGM cable connection
 
#* Return to production after that.
 
#* Return to production after that.
 
#* Possible Saturday morning access as well.
 
#* Possible Saturday morning access as well.
Line 54: Line 54:
 
#** RADCON will follow this run with their Fast access study.
 
#** RADCON will follow this run with their Fast access study.
 
#* Consequent Hall controlled access to fix TPOL noise issue.
 
#* Consequent Hall controlled access to fix TPOL noise issue.
#* Simultaneous tagger hall access to fix bad TAGH channels.
+
#* Simultaneous tagger hall access to fix bad TAGM channels.
 
#* Possible Saturday morning access as well.
 
#* Possible Saturday morning access as well.
 
#* [https://halldweb.jlab.org/wiki/images/3/31/Spring18_week3.jpg Run plan chart: Week 3]
 
#* [https://halldweb.jlab.org/wiki/images/3/31/Spring18_week3.jpg Run plan chart: Week 3]

Revision as of 09:46, 26 January 2018

<- Back to Run Coordination Meetings:Fall2017 Spring2018 Run

Friday, January 26

  1. Notes from the previous 24 hours:
    • Beam was mostly up and we were taking production data.
    • From 6pm till 7:30pm, the beam was off to switch Hall B to 5-pass run.
    • At about the same time, 22.5uA were turned on for Hall A.
    • The beam was acceptable but not as good as before [1].
    • Accelerator went down at 5:20am to investigate A -> C bleed-thru. We got beam back at 8am.
    • ABU 15.2 hrs (5.6+5.1+4.5), BANU 3.5 hrs (2.3+0.6+0.6) for the last 3 shifts
    • About 2.4B triggers collected. Total: Spreadsheet: number of triggers.
  2. Issues:
  3. Plan for today:
    • 300nA AMO run together with L1 study from 8am until 10am.
    • Controlled access (with TPOL RADCON sweep) at 10am for:
      • RADCON test
      • TPOL noise
      • TAGM cable connection
    • Return to production after that.
    • Possible Saturday morning access as well.
    • Run plan chart: Week 3
  4. Reports:
  5. Weekend meeting?

Thursday, January 25

  1. Notes from the previous 24 hrs:
    • Beam was off from 9am till 5:20 pm. At the end, Hall A was able to get their 22.5 uA current. Since then, beam was relatively stable.
    • Upon return of the beam, a harp scan was performed: MCC and Our harp. Beam seems to be acceptable.
    • After harp scan, about an hour has been spent on trigger and DAQ studies by Sasha and Sergei.
    • We switched to production running at 7pm and has been taking production data since then.
    • ABU 10.5 hrs (0.7+3.5+6.3), BANU 0.8 hrs (0+0.3+0.5) for the last 3 shifts
    • About 1.2 B triggers collected. Total: Spreadsheet: number of triggers
  2. Issues:
    • A couple of hours of beam time has been lost on fighting with DAQ while starting the next run (java out of memory, rebooting rocks, etc.)
    • Sometime, a histogram or two would disappear in rootspy and reappear after monitoring restart.
    • Once, a coherent edge had to be nudged by more than 50 MeV.
    • BCAL ADC/TDC timing offsets jumped by 32 ns for some modules: [8]
    • TAGM voltages
    • Any other issues?
  3. Short term run plan:
    • TAC run: should we do it today (Halls A and C are down)?
    • 2 hours of AMO 300nA running tomorrow morning.
      • Would it be better to start it at 7am or 8am?
      • Are any configuration changes necessary (HV, etc.)?
      • Who needs to be here for such run?
      • RADCON will follow this run with their Fast access study.
    • Consequent Hall controlled access to fix TPOL noise issue.
    • Simultaneous tagger hall access to fix bad TAGM channels.
    • Possible Saturday morning access as well.
    • Run plan chart: Week 3
  4. Reports: