2011-08-02 LHC 8:30 meeting EBH 1 1 A ‘typical’ day of LHC operation Wednesday 3 August 2011
Jan 03, 2016
2011-08-02LHC 8:30 meeting EBH 11
A ‘typical’ day of LHC operation
Wednesday 3 August 2011
2011-08-02LHC 8:30 meeting EBH 2
6:36 Fill #1999 dumped by power glitch (detected by FMCM)
8:43 back in Stable beams Fill #2000 (2:07 hours) Beam intensity: 1.615E14 Bunch intensity: 1.17E11 Atlas max. luminosity: ~2 Hz/nb Emittance into collision: ~1.9 um Beam lifetime >50 hours Programmed dump at 6:16 after 21:32 hours of stable
beams
Wednesday 3.8.2011
2011-08-02LHC 8:30 meeting EBH 3
2011-08-02LHC 8:30 meeting EBH 4
Vacuum very good
1E-8
2011-08-02LHC 8:30 meeting EBH 5
Damper module H2B2 tripped - switch back on Reboot of cfv-ua47-bctfra to re-establish BCT reading Experiment could not fully profit:
CMS: problems with cooling water solved by 19:30 + recovering time. (stopped data taking from 11:45 – 2:30)
LHCb 3:30 both planes optimized drop below target lumi 4:50 electrical alarm which could not be reset stop
taking data Total integrated lumi collected:
ATLAS 90.4 pb-1 CMS ≈25 pb-1 LHCb 25.8 pb-1 ALICE 0.15 pb-1
Fill #2000
2011-08-02LHC 8:30 meeting EBH 6
Atlas Lumi per Day
2011-08-02LHC 8:30 meeting EBH 7
2011-08-02LHC 8:30 meeting EBH 8
Atlas Luminosity and Luminosity Lifetime
2011-08-02LHC 8:30 meeting EBH 9
CMS lumi last 5 fills
2011-08-02LHC 8:30 meeting EBH 11
LHCb Lumi 5 last fills
2011-08-02LHC 8:30 meeting EBH 13
Atlas Record Statistics
2011-08-02LHC 8:30 meeting EBH 14
7:10 injecting probe beam Beam intensity: 1.68E14 Bunch intensity: ~1.22E11
Intervention in the PS (switching back to POPS power supply) Intended to start 9:00 and last for 6-8 hours
keep the current fill #2001 in the LHC
Should we loose the fill Access
‘adiabatically’ increase beam intensity
Outlook