Difference between revisions of "Run Planning Meeting Notes, July 07 - July 14, 2022"

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(Past 72 hours)
(Past 72 hours)
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* Friday harp scan [https://logbooks.jlab.org/entry/4012897] [https://logbooks.jlab.org/entry/4012901] [https://gryphn.phys.uconn.edu/halld/cobrems/harptool_2d.cgi?harp5C11_xsigma=1.293&harp5C11_xsigma_err=0.03&harp5C11_usigma=0.997&harp5C11_usigma_err=0.03&harp5C11_ysigma=1.015&harp5C11_ysigma_err=0.03&harp5C11B_xsigma=1.076&harp5C11B_xsigma_err=0.05&harp5C11B_usigma=0.8206&harp5C11B_usigma_err=0.05&harp5C11B_ysigma=0.931&harp5C11B_ysigma_err=0.15&radHarp_xsigma=1.039&radHarp_xsigma_err=0.02&radHarp_usigma=1.087&radHarp_usigma_err=0.02&radHarp_ysigma=0.8327&radHarp_ysigma_err=0.02&harp5C11_spos=102.97&harp5C11B_spos=115.11&emittance_x=0.0041&radHarp_spos=119.7&emittance_y=0.00233&collimator_spos=194.92&fit=fit+and+plot extrapolation]
 
* Friday harp scan [https://logbooks.jlab.org/entry/4012897] [https://logbooks.jlab.org/entry/4012901] [https://gryphn.phys.uconn.edu/halld/cobrems/harptool_2d.cgi?harp5C11_xsigma=1.293&harp5C11_xsigma_err=0.03&harp5C11_usigma=0.997&harp5C11_usigma_err=0.03&harp5C11_ysigma=1.015&harp5C11_ysigma_err=0.03&harp5C11B_xsigma=1.076&harp5C11B_xsigma_err=0.05&harp5C11B_usigma=0.8206&harp5C11B_usigma_err=0.05&harp5C11B_ysigma=0.931&harp5C11B_ysigma_err=0.15&radHarp_xsigma=1.039&radHarp_xsigma_err=0.02&radHarp_usigma=1.087&radHarp_usigma_err=0.02&radHarp_ysigma=0.8327&radHarp_ysigma_err=0.02&harp5C11_spos=102.97&harp5C11B_spos=115.11&emittance_x=0.0041&radHarp_spos=119.7&emittance_y=0.00233&collimator_spos=194.92&fit=fit+and+plot extrapolation]
 
* Hall-D beam position
 
* Hall-D beam position
** Friday [https://logbooks.jlab.org/entry/4013160 Beni
+
** Friday [https://logbooks.jlab.org/entry/4013160 Beni]
 
** Saturday [https://logbooks.jlab.org/entry/4013403 Simon]
 
** Saturday [https://logbooks.jlab.org/entry/4013403 Simon]
  

Revision as of 23:31, 10 July 2022

Back to Run Coordination Meetings:Summer2022

Meeting are via ZoomGov: connect (Meeting ID: 160 199 0060 / Passcode 8394)

MCC whiteboard

Hall D counting room white board

Spreadsheet with list of runs


Friday July 8 - Sunday July 10

Past 72 hours

  • 6B events on lead have been collected
  • DAQ livetime looks much better after switching to writing data in two files simultaneously
  • Friday harp scan [1] [2] extrapolation
  • Hall-D beam position

Shift reports

Reports

  • New high voltages were loaded for FCAL [3]
  • Hovanes has updated AMO radiator position [4]

Issues

  • Tagger NMR communication will be worked out this week (Tim) [5]

Plans

  • Continue production on lead
  • unmask FCAL modules in the trigger


Thursday July 7

Past 24 hours

  • harp scans were done during short beam on period during day-time, some distributions show 1/100 peak/shoulders ratio others 1/10,000 [6] [7]
  • Dominion Power's work required a voltage reduction so we had tagger, PS and sweep magnets off for a couple of hours
  • collected cosmics and LED runs during daytime, and production on lead (about 8 hrs) during night time
  • Beni: beam was quite stable overnight [8]

Shift reports

Reports

  • Sasha checked FCAL trigger rate without masking inner layers. Preliminary result for the rate was 14kHz [9]
  • Hovanes pointed out, that we don't observe 60Hz oscillations now [10]

Issues

  • Problems with running at 30nA on AMO, radiator thickness was reduced to 3*10^-4 this night,

as 4.5*10^-4 was causing IOC trips [11] [12]

  • Alexandre just noticed that Tagger magnet NMR communication is down again [13]
  • DIRC major alarm has been acknowledged [14], Mark may need to investigate this issue more
  • Dave has noticed we have a higher radiation level values now, about factor of 1.5 [15], [16]
  • Hydra alarm on fa125_itrig [17]
  • daq livetime is uneven from time to time [18]

Plans

  • Continue production on lead
  • find out the way to unmask FCAL modules

Wednesday, July 6

Past 24 hours

  • Malte and Mark worked on FCAL bases replacement [19]
  • One of the RF crates had been disconnected, Beni fixed it [20]
  • Bobby and others worked in the tagger hall during the day. At 3:30 pm Bobby noticed that the IOC for the NMR was not responding properly. MCC rebooted the IOC crate. Afterward, it was still locked on zero and there was still a Comm Status error [21]
  • Beni found that the solenoid controls hung, and restarted the ramping, which was helpful.
  • Had minor issues with DAQ at 7.00 pm: ROCFDC11 error: timeout error on FA125, every 3 seconds. (fADC125 in fdc11 slot 3 was replaced during daytime [22]) Sergei worked out the DAQ issue at 7.50 pm
  • Established operating field of the solenoid at 8:30 pm.
  • harp scans are ongoing now

Shift reports

Reports

  • Sergey and Lubomir worked in the Hall this night from 10 pm to 11:30 pm [23]
  • Hovanes reported his study of the coherent peak position drifts observed on the 4th of July [24]
  • Still have 60Hz structure [25]. The situation is improved according to MCC experts.
  • CDC HV and TAGM alarms are more frequent now
  • CDC gas flow increased [26]

Issues

  • Hovanes pointed out that something strange happened during solenoid ramping up [27] [28]

Plans

  • Continue production on lead
  • Unmasking FCAL central modules from the trigger needs to be done unless it increases rate too high