CERN

LPC meeting summary 04-07-2022 - final

Minutes overview      LPC home


Minutes and Summary

Main purpose of the meeting: Final preparations for media event and experimental requests for ramp-up

 
 
 
1) Introduction (Brian)
 
slide 3: FASER/SND emulsion exchange : foresee 8 hours instead of 4 hours
 
 
Gas injection in SMOG still not in LHCb’s hands, but agreement with vacuum group
to operate on short notice. Will only be hand of LHCb in September.
 
Q (Widold): will it be ready by VdM scan programme in September.
A (Federico): yes, it’s high priority.
 
slide 5: beam-beam measurement needs to be scheduled soon, so proponents can plan travel.
 
slide 6: remaining beam commissioning steps: ~ 5 shifts (daytime).
 
 
slide 8: ramping of ALICE magnet: foreseen for end of second fill.
             beta* leveling from first fill onwards (evening on July 5th)
 
slide 9: to be checked if multi bunch indiv injection is set up in injectors
 
Q (Federico-ALICE): IP2 only offset leveling?
A (Jorg W): yes
 
 
 
2) Round Table
 
CMS (Gianni)
 
filling scheme for 900 GeV collisions during the night? A: 4b, 2 colliding.
 
scrubbing: foreseen to be in 2-3 blocks. To be discussed how to handle it.
 
 
ALICE (Federico)
 
magnet scan test, see slide 3
 
ATLAS (Jorg)
 
 
slide 2: loss maps gave good data. Last one did not take data.
ALTAS plans for intensity ramp up on slide 3.
 
Q (Jorg S): PU for tomorrow?
A (JW): low 30
 
Q (Jorg S): AFP insertion today?
A (JW): yes, try it out today.
 
 
slide 4: tomorrow: need to bring beam into collision after ADJUST
 
slide 4: put 2 scrubbing blocks together.
 
request for horizontal muons no longer needed after this week.
 
LHCb (Preema)
 
no change from last week
 
plan to test VELO safety system end of the week