Date

Attendees

Goals

Discussion items

TimeItemWhoNotes

General safety updates
  • Be careful of sharp cable ties
    • Someone got stabbed by one
    • Try to cut cable ties so they aren't sharp
  • 750 pit fire
    • We are storing HE CMs down there
    • Power still out
    • Be aware of burning smells
      • Smell something say something
    • Be aware of egress paths in your work area

ops call tracker
  • Remember to update the ops call tracker

Information PV
  • New PV setup to keep notes on cavities that don't behave quite as expected
  • Example: HL1-7 keeps failing SSA cal. How to communicate to ops
  • Sebastian is figuring out how to add text
  • Lisa is figuring out where to put it in Auto setup
    • Sebastian: Needs to be obvious that they need to look at it
    • Lisa is thinking about a button beside the EDM expert panel button
    • Lisa: it's harder than you'd think to have the button light up
      • Release soon with no light up?
        • Ops checks if something goes wrong
      • Take longer to develop highlight
      • Sonya: add indicator beside the button?
        • Lisa: space concerns
      • Sebastian: hover text over the indicator?
        • Might disappear to quickly to be read?
  • Sonya can add another PV to track severity if that is useful

PAMM Work AMRF
  • Shop getting some chassis ready for the next PAMM
    • They are going to try to replace some chassis for troublesome cavities
    • Need to calibrate with new chassis
    • This will help identify problem when we restart
    • Sebastian: should we ask for more restart time to check out cavities with replaced chassis
    • What cavities/chasis
      • 17-4 (RFS2), 12-3 resonance chassis



Fake Quenches

Had large chunks of the machine have fake quenches all at once

  • Whole machine one day
  • L1B all crash (Saturday)
    • Jing: PRL looked okay, MO looked okay
    • Ryan: noticed CM01 was off and can see spike on PRL readout
      • L0B + L1B fed from same source
  • Sebastian: is there anything we should ask ops to look at or document when it happens
    • Sonya: it's too fast... nothing for them to catch
    • Added some new monitors that will not get cross-talk signal
      • LLRF MASTER SOURCE PRL Diag, LLRF PRL Diag Other (RF Global)
        • Forward not connected for some of them
    • LO power only read every 10 seconds
    • Jing: always look at S2 MO power, RACK PRL STD
      • Could something in cryo be related?
  • Sebastian: we could turn off the quench resetter to get more information on cavity quenches
    • Some we might not notice due to the instant reset
  • Linac locking work ongoing. That might be having some impact.








Action items

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