saturday morning
DESCRIPTION
Saturday morning. 09:23 Dumped fill 2006 after 25h59m stable beams Atlas 100.5 pb-1 Alice 175 nb-1 CMS 98.3 pb-1 LHCb: 31.5 pb-1 Access for Alice 11:00 ALICE intervention on cooling finished C ycle Alice’s solenoid 12:15 Pilots in. Injection. Bunch intensity 1.25e11 Injection clean - PowerPoint PPT PresentationTRANSCRIPT
09:23 Dumped fill 2006 after 25h59m stable beams Atlas 100.5 pb-1 Alice 175 nb-1 CMS 98.3 pb-1 LHCb: 31.5 pb-1
Access for Alice 11:00 ALICE intervention on cooling finished Cycle Alice’s solenoid 12:15 Pilots in
Saturday morning
Bunch intensity 1.25e11 Injection clean SPS BQM stopped a number of injections due to bunch
length wirescans 144b-train:
B1-H: 1.4 B1-V: 1.3 B2=H: 1.6 B2-V: 1.9
Vertical blow-up on a least some bunches fleeting noted
13:45 Ramp started The Tune FB stopped in the B1-H plane several times at the
start of the squeeze – measurement stability out of bounds
Injection
7-8-2011 LHC status
14:45 Stable beams Total intensity 1.73e14 Average bunch intensity 1.25e11 Initial luminosity ~1.95e33 Average emittance ~2.15 microns
Note high vacuum around 3 & 7
Fill 2007
Vacuum
7-8-2011 LHC status
Bunch-by-bunch from BRAN
7-8-2011 LHC status
Losses on TCTVB.4R8
LHC status7-8-2011
We have found that the losses at the TCTVB.4R8 are actually correlated with the losses at the TCP of IP3. What we see is
then a leakage from the momentum cleaning.
Temperature TCTVB.4R8
LHC status7-8-2011
Vacuum
LHC status7-8-2011
Note also improvement in 3 & 7
07:40 Fill 2007 dumped – PIC PLC R1 UJ16 Lost matching section R1 Markus Zerlauth: memory corruption, remote reset possible
Stable beams: 17h12m ~80 pb-1 delivered in Atlas/CMS
Reset, pre-cycle and go
Sunday morning
7-8-2011 LHC status
LHC status7-8-2011
LHC status7-8-2011