Day |
Summary |
Link to report from morning meeting |
May 2nd May |
- Fill 1755 - peak luminosity > 8e32 cm-2s-1
|
8:30 meeting
Roberto Losito SEEs seen by collimator system |
Labour day |
- Overnight fill lost at 5:30 to BLM communication problem (~30 pb-1)
- Access for QPS and vacuum (insulation vacuum triplet L5)
- Head for 768 physics, into stable beams at around 19:00, initial lumi around 8e32
- Fill lost around 20:30 to collimator position interlock - possible SEE
- Access required for QPS controller reset
- Some delays, back into physics around 07:00 Monday morning
|
9:00 meeting |
Saturday 30th April |
- Lost ramp for physics around 2:30 - vacuum spike - R2.
- Back in physics 06:40, fill lost to octupole power converter trip 08:20.
- Back in physics 13:30
|
9:00 meeting |
Friday 29th April |
- reasonable fill in overnight (25 pb-1)
- dumped at 11:00, access for QPS reset (SEU)...
- quick look at Abort Gap Keeper in the afternoon
- Around 17:00 - major power glitch - 6 sectors & Atlas down
- Beam back around 21:30, dynamic correction of b3 trial plus test ramp in shadow of Atlas ramp-up
|
8:30 meeting |
Thursday 28th April |
- 09:00 overnight fill lost - slow beam loss - vacuum spike
- Access - QPS reset (SEU)
- Stable beams briefly - fill lost to controls rack crash
- Back in stable beams around 22:00
|
8:30 meeting |
Wednesday 27th April |
- 07:10 Fill 1739 dumped - cryo problem - cooling
- Access for Atlas.
- Injection 624 bunches, problem with fill pattern
- injection 624 bunches, ramp squeeze, lumi, stable conditions
|
8:30 meeting |
Tuesday 26th April |
- 04:50 Cryo problem in
point 2. End of fill 1736
- 08:00 Cryo recovered.
- Various accesses - including energy extraction fix in S34.
- Lost ramp - BPM communication
- Switched LHCb polarity
- Access for cryo - filter problem
- 23:00 Fill 1739 - 5.2 x1032 cm-2 s-1 (ATLAS)
|
8:30
meeting |
Monday 25th April |
- 12:00 150 pb-1
in 2011
- 13:30: dump fill 1735,
20 pb-1 integrated luminosity.
- 16:20: Stable beams
fill 1736, 480 b/72b per injection. Initial luminosity up to
~4.3x1032 cm-2
s-1 (ATLAS)/~4x1032 cm-2
s-1 (CMS).
- 20:40 Beam dump due to
losses induced by vacuum spike on vacuum gauge close to triplet R8. End of
fill #1736
- 23:45 Stable beams fill
1736, 480 b/72b per injection. Initial luminosity up to
~4.8x1032 cm-2
s-1 (ATLAS)/~4.4x1032 cm-2
s-1 (CMS).
|
9:00
meeting |