LHC 2011 - latest news

Week 33: Machine coordinators: Bernhard Holzer and Jan Uythoven

Cryogenics recovery and luminosity production

Adiabatically increase beam intensity

 

Day

Summary

Link to report from morning meeting

Monday 22nd August
  • 00:07 stable beams
8:30 meeting
Sunday 21st August
  • 02:00 Cryo back, injecting probe beams
  • 06:41 fill # 2037. Stable beams, initial lumi around 2e33.
  • 11:00h ALFA on beam: ok
  • 15:00h tight collimator settings: ok
  • 16:08 beam dump due to SIS collimator interlock
  • precycle: power converter problem: access
9:00 meeting
Saturday 20th August
  • Cryo Recovery
9:00 meeting
17:00 Cryo - L.Tavian
Friday 19th August
  • Machine & Cryo Recovery
8:30 meeting
MP7_report - D.Boccini
Thursday 18th August
  • 01:10 Fill # 2032, Stable beams, initial lumi 2.4e33 (!)
    Bunch intensities of 1.27e11p
  • 06:23 Fill #2032 dumped, Electrical glitch, FMCM Int. lumi 36 pb-1
  • 08:04 another electrical glitch, during filling
  • 09:07 SIS RF HOM triggered, during filling
  • 11:45 General Power cut - lost cryogenics
    MACHINE & CRYO RECOVERY
8:30 meeting
Wednesday 17th August
  • 02:59 Fill #2028 dumped, RF interlock, int. lumi 19 pb-1.
  • 05:41 Fill #2029 Stable beams, initial lumi 2.1e33.
  • 09:48 Fill #2029 dumped, ATLAS beam loss after UFO near triplet R1
    Int. lumi 26 pb-1.
  • Change LHCb polarity.
  • 13:59 Fill #2030 Stable beams, initial lumi 2.2e33.
  • 15:37 Fill #2030 dumped, RQX.L5 tripped, could be SEU.
    Int. lumi 12 pb-1.
  • 22:12 Fill #2031, Stable beams, initial lumi 2.1e33
  • 22:12 Fill #2031, Stable beams, initial lumi 2.1e33
  • 23:04 Fill #2031 dumped, Electrical glitch, FMCM
    Int. lumi 6.1 pb-1
8:30 meeting
Tuesday 16th August
  • Cryo Recovery.
  • 14:00 Cryo conditions OK.
  • 18:30 RF klystron pc fault: access.
  • 23:55 Fill #2028, Stable beams, initial lumi 1.9e33.
8:30 meeting
Monday 15th August 
  • Cryo recovery
8:30 meeting
Cryo report on Pt8