This week (so far) - Availability 110h40. Unplanned maintenance: 28h20. Planned maintenance: 29h00.
Day |
Short summary |
Link to report from 8:30
and 17:00
meetings |
Sunday 14th March |
- 07:00: Pre-cycle in preparation of ramp.
- 09:00: Preparing ramp to 1.18 TeV with beam.
- 12:30: Ramp to 1.18 TeV. Measurements at 1.18 TeV.
- 15:00: Dump 1.18 TeV fill. Cycle.
- 19:00: Injection and beam dump studies.
- Availability: 24h00. Unplanned maintenance: 0h00. Planned maintenance: 0h00.
|
Slides from 9:00 meeting |
Saturday 13th March |
- 07:00: Studies with aperture kicker started. Kicking demonstrated.
- 11:00: Beam setup, loss optimization, 2 RF cavities restarted. LHCb magnets turned on. Orbit corrected.
- 16:00: Beam tuning of pilot bunch: lifetime > 125h both beams. Emittance.
- 17:00: Injection of several single bunch intensities (pilot, fat pilot, half nominal): 5e9-6e10.
- 21:00: LHC beam quality checks in SPS and TL.
- 22:30: Reinjection LHC. Halo stability check.
- 23:30: Aperture studies.
- Availability: 24h00. Unplanned maintenance: 0h00. Planned maintenance: 0h00.
|
Slides from 9:00 meeting |
Friday 12th March |
- 02:00: Machine closed.
- 09:00: Cryogenics all OK. Preparing pre-cycle.
- 10:00: Pre-cycle started.
- 11:30: Pre-cycle finished.
- 14:00: Beam back. Orbit corrections, injection check, tune adjustments.
- 15:00: PIC on 60A power converters.
- 16:00: Beam back. Chromaticity adjustments. Beta beat. Orbit feedback tests.
- 21:00: Start of ramp with beam to 1.18 TeV. Arrive very nicely at top at 21:11.
- 23:00: Aperture measurements.
- Availability: 14h00. Unplanned maintenance: 1h00. Planned maintenance: 9h00.
|
Slides from 8:30 meeting |
Thursday 11th March |
- 00:00: Beam commissioning of transverse damper.
- 04:00: Start of cryo work.
- 07:00: Planned access to the machine (nQPS etc).
- Availability: 04h00. Unplanned maintenance: 0h00. Planned maintenance: 20h00.
|
Slides from 8:30 meeting |
Wednesday 10th March |
- 00:20: Second ramp without beam to 1.18 TeV. BETS analyzing. Then ramp-down precycle combo.
- 03:00: Beam back after ramp tests without beam. Tunes, beta beat, chromaticity measurements and adjustments. b3 knob calibration.
- 08:00: Beam commissioning work on the RF system and tune feedback.
- 12:00: MPS tests.
- 16:00: Injection studies.
- Availability: 24h00. Unplanned maintenance: 0h00. Planned maintenance: 0h00.
|
Slides from 8:30 meeting
Slides from LMC report |
Tuesday 9th March |
- Orbit feedback tests curtailed by cryogenics controls problem at 05:00
- Seamless merged with current lead problem in S45 at around 07:00
- 16:00: Both beams are back. Checking and correcting tunes & orbit.
- 17:00: Collimation tests starting. Loss maps for efficiency & passive protection. Grazing events to CMS.
- 20:00: Prepare for ramp test without beam. 21:42 machine at 1.18 TeV without beam.
- 22:00: Ramp-down precycle combo.
- Availability: 13h00. Unplanned maintenance: 11h00. Planned maintenance: 0h00.
|
Slides from 8:30 meeting |
Mon 8th March 2010 |
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Presentation
at the 8:30 meeting |
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