Difference between revisions of "Run Planning Meeting Notes, November 30 - December 7, 2022"

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(→‎Monday Dec. 5th)
(→‎Monday Dec. 5th)
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=== Reports ===
 
=== Reports ===
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*~1h Hall Rapid Access Friday between 11am and 12:10pm to [https://logbooks.jlab.org/entry/4094214 change a dying FCal basis (Malte/Mark Dalton)] and [https://logbooks.jlab.org/entry/4094220 check the possibly faulty FDC fADC that had been installed Wednesday. It was eventually not swapped (Lubomir)]. Also, RadCon surveyed some modules that needed to be taken out of the Hall.
+
*Friday:~1h Hall Rapid Access between 11am and 12:10pm to [https://logbooks.jlab.org/entry/4094214 change a dying FCal basis (Malte/Mark Dalton)] and [https://logbooks.jlab.org/entry/4094220 check the possibly faulty FDC fADC that had been installed Wednesday. It was eventually not swapped (Lubomir)]. Also, RadCon surveyed some modules that needed to be taken out of the Hall.
 
*Friday 18:20: [https://gryphn.phys.uconn.edu/halld/cobrems/harptool_2d.cgi?harp5C11_xsigma=1.004&harp5C11_xsigma_err=0.03&harp5C11_usigma=1.058&harp5C11_usigma_err=0.03&harp5C11_ysigma=1.004&harp5C11_ysigma_err=0.03&harp5C11B_xsigma=0.8442&harp5C11B_xsigma_err=0.05&harp5C11B_usigma=0.9786&harp5C11B_usigma_err=0.05&harp5C11B_ysigma=0.9881&harp5C11B_ysigma_err=0.15&radHarp_xsigma=0.8038&radHarp_xsigma_err=0.02&radHarp_usigma=0.7133&radHarp_usigma_err=0.02&radHarp_ysigma=0.8519&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 Harp scans (first ones since 11 days). Beam profiles looks good. (Hovanes)]
 
*Friday 18:20: [https://gryphn.phys.uconn.edu/halld/cobrems/harptool_2d.cgi?harp5C11_xsigma=1.004&harp5C11_xsigma_err=0.03&harp5C11_usigma=1.058&harp5C11_usigma_err=0.03&harp5C11_ysigma=1.004&harp5C11_ysigma_err=0.03&harp5C11B_xsigma=0.8442&harp5C11B_xsigma_err=0.05&harp5C11B_usigma=0.9786&harp5C11B_usigma_err=0.05&harp5C11B_ysigma=0.9881&harp5C11B_ysigma_err=0.15&radHarp_xsigma=0.8038&radHarp_xsigma_err=0.02&radHarp_usigma=0.7133&radHarp_usigma_err=0.02&radHarp_ysigma=0.8519&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 Harp scans (first ones since 11 days). Beam profiles looks good. (Hovanes)]
  
 
=== Issues ===
 
=== Issues ===
 
*[https://logbooks.jlab.org/entry/4094108 FDC timing shift]
 
*[https://logbooks.jlab.org/entry/4094108 FDC timing shift]
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*[https://logbooks.jlab.org/entry/4094734 Beam locks sometime do not work and the beam transmission drops. (Plot for Saturday,~6am) also happened Friday around 11:50pm]  [https://logbooks.jlab.org/entry/4094674 MCC explains that when Hall C is off or ramping up.] (I also saw this instance 2 days ago when Hall A was ramping up, although at the time, I wondered if it was just a coincidence). => Watch carefully the beam position. 
  
 
=== Short term run plan ===
 
=== Short term run plan ===

Revision as of 09:05, 3 December 2022

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

MCC whiteboard

Hall D counting room white board

Hall D Logbook

Back to Run Coordination Meetings:Fall2022

Monday Dec. 5th

Last 72h

  • Friday, *** and *** were spent mostly with production on full target. *** of ABU (Sat.7am - Monday 7am).
  • Hall C re-started running Friday around 8pm. Now Hall A, C and D are running concurrently.

Reports

Issues

Short term run plan

    • If beam is off, we have opportunistic work:
    • Beam off for more than 1h: rapid access for A. Somov, Vlad and Harshak for oportunistic work in the PS test area.

Tentative longer term run plan

  • Possible RF recovery Wednesday Dec. 7th.
  • TAC run?
  • Luminosity study?

Friday Dec. 2nd

Last 24h

  • Thursday was spent mostly with production on full target. It was an efficient day, with 17.8h of ABU (7am-7am).
  • A. Somov did a low beam current test of the Active Colim. high gain in anticipation of a future TAC run. It looks good.
  • Hall C was supposed to get back to running in mid-swing shift, which would be followed by us doing Harp scans (last ones done: Oct. 21st), but it did not happen (Hall C vacuum issue).

Reports

Issues

  • The FDC fadc installed Wednesday by Naomi and Lubomir needed baseline calibration. Done during swing shift (Sergei/Lubomir).
  • cdc p_diff alarms are becoming rarer: 1 (day shift) + 1 (swing shift) + 0 reported in owl shift + 1 early riser.

Short term run plan

  • Hall C is expected to be back to running ??at some point??.
  • Harp scan after Hall C beam is tuned (last harps done on Nov. 21st, but Transmission is fine.)
  • FDC fadc: 20 min raw mode run with beam. Beni will analyse it and determine if the fadc needs to be replaced
  • If beam is off, we have opportunistic work:
    • Beam off for more than 1h: rapid access for A. Somov and Vlad for ??
    • Beam off for more than 2h: rapid access for Lubomir or Beni IF FDC fadc needs to be changed
    • Beam off for more than 2h and RadCon is available, need to survey fadc to removed them from the Hall (Lubomir/Codi)

Tentative longer term run plan

  • Possible RF recovery Wednesday Dec. 7th.
  • TAC run
  • Luminosity study

Thursday Dec. 1st

Last 24h

Reports

Issues

  • The new FDC fadc is worst than the one replaced (Naomi/Lubomir). The problem is only for raw mode run.
  • Many cdc p_diff alarms (e.g. 0.8 alarm/hour during swing and owl shifts) leading to runs often shorter than 2h (this has already been discussed several time. This is just a report).

Run plan

  • Hall C is expected to be back to running during swing shift today.
  • 20 min test at low beam current/high Active Colim. gain to see if adjustment are needed (A. Somov)?
  • Last harp scan was done on Nov. 21st. Should we do a new one? (Transmission is fine.)
  • Luminosity study?
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