Difference between revisions of "Run Planning Meeting Notes, October 21 - October 27, 2021"

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(Happenings since the Friday morning meeting)
(Happenings since the Friday morning meeting)
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#* Started filling the target a little before 9:30, with Chris Keith watching, and the shift crew here.
 
#* Started filling the target a little before 9:30, with Chris Keith watching, and the shift crew here.
 
#* We went into controlled access so that Tim could go in to do something for CPP.  Sasha also needs to make an access.
 
#* We went into controlled access so that Tim could go in to do something for CPP.  Sasha also needs to make an access.
#* [https://logbooks.jlab.org/entry/3930361 This looks promising]
+
#* [https://logbooks.jlab.org/entry/3930361 This looked promising]
 +
#* The problem was isolated to magnet YBBS04. The plan for its repair will be presented on Monday.
 +
#* Shifts are cancelled until Monday 10am.  Monday 10am+ shifts are on standby.  Tuesday shifts remain unaltered.
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#* The target has been emptied, the solenoid is still on, and the hall is in power permit.
 +
 
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The next meeting will be at 08:45 on Monday.
  
 
=Friday, October 22=
 
=Friday, October 22=

Revision as of 19:10, 22 October 2021

<-- Summer 2021 RC meetings MCC whiteboard

Happenings since the Friday morning meeting

    • No news from the accelerator yet but everyone seemed optimistic at the morning meeting.
    • Started filling the target a little before 9:30, with Chris Keith watching, and the shift crew here.
    • We went into controlled access so that Tim could go in to do something for CPP. Sasha also needs to make an access.
    • This looked promising
    • The problem was isolated to magnet YBBS04. The plan for its repair will be presented on Monday.
    • Shifts are cancelled until Monday 10am. Monday 10am+ shifts are on standby. Tuesday shifts remain unaltered.
    • The target has been emptied, the solenoid is still on, and the hall is in power permit.

The next meeting will be at 08:45 on Monday.

Friday, October 22

  1. Last 24h: Production runs continued smoothly until 2:51pm when an arc magnet tripped. About 7pm the team looking at the power supply found that there was a short in any one of the 42 magnets downstream, they will resume work in the morning. Shifts were cancelled until 9am.
arc 7 trip
  1. Remaining issues:
    • BCAL noise at 10 o'clock
    • Bleedthrough
  2. Plan:

Thursday, October 21

  1. Last 24h:
  2. Remaining issues:
    • Tagger hodoscope time shifts
    • communication with accel. w.r.t. tagger magnet - Paul Vasilauskis (Ops group leader): "I am putting out to my staff to contact the hall if they do need to touch the magnet and am looking into adding wording to the magnet screens"
    • BCAL noise at 10 o'clock
    • Bleedthrough
  3. Plan:
    • When the beam is back continue production at 200nA after the usual checks (radiation levels & harp scans)
    • Continue running with the solenoid on & target full until Friday or later
    • Pass change for A&B Saturday morning (A->4 pass)
    • Expect downtime Monday morning for VIP tour, start time TBC probably ~7am.
    • Ops will need another maintenance day before the energy change