LHC 2010 - latest news

Week 16: Machine Coordinators:    Mike Lamont - Ralph Assmann - M. Meddahi (as of Wednesday)

Latest plan: link PDF link XLS (version of 25 April, 14:00)

List of End of Fill studies (in work)

Day Short summary/plan Link to reports from 8:30 and 17:00 meetings
Sunday 25th April 2010
  • 09:15: Beta beat measurements and loss maps at the end of fill
  • 11:00 : Beam dumped - Combo pre-cycle and ramp down
  • 13:30 : Preparing for access for QPS - Vacuum problem on MKI P2
  • No beam before 19h
  • Plan for next fill: 3.5 TeV, squeezed optics, 2e10/beam (2bx2b) Van der Meer scans
  • Cancelled: Fill at 3.5TeV, squeezed optics, 3.5e10/beam (3bx3b) - stable beams
Report from 9h00 meeting
Saturday 24th April 2010
  • 03:13: First stable beams with beta*=2m.
  • 05:30: All 4 experiments above 1.1e28 cm-2s-1 after optimization! Factor 10 in luminosity achieved, as predicted!
  • Plan for next fill: 3.5 TeV, squeezed optics, 2e10/beam (2bx2b) Van der Meer scans
  • Then: Fill at 3.5TeV, squeezed optics, 3.5e10/beam (3bx3b) - stable beams
Report from 9h00 meeting
Friday 23rd April 2010
  • 06:00 - 12:00 : Qualification for 3.5TeV squeezed optics  - last check
  • 12:00 - 20:00 : Access (QPS and UPS) and recovery
  • 20:00 - 12:00 : Setup beam flag - 3.5TeV squeezed optics - stable beams

Report from 8h30 meeting

Report from the 14:30 meeting

Report from the 17:00 meeting

Talk at LPCC (2 week summary)

Thursday 22nd April 2010
  • 09:00 - 16:00 : Recovering and qualification for 3.5TeV squeezed optics for operation - Partially done (beam dump at 2 m due to incorporated unwanted tune trim)
  • 16:00 - 18:00 : Ramping down
  • 18:00 - 22:00 : transverse damper commissioning performed
  • 22:00 - 06:00 : Qualification for 3.5TeV squeezed optics for operation (1 squeeze done)
Report from 8h30 meeting

Report from the 17:00 meeting
Wednesday 21st April 2010
  • 02h20: Beta beating measurement and correction done.
  • 05h00: All IR steered into collision for beta* of 2m. Collimation setup in IR's in parallel.
  • 05h30: Beams lost.
  • 07h00: RF phasing.
  • 09h30: Preparing next fill for ramp and squeeze.
  • 10h45: Start of ramp.
  • 11h35: Arrival at 3.5 TeV.
  • Afternoon:
    • Squeeze to 2 m done for all IPs
    • TCTs setting up and loss maps performed
    • Asynchronous beam dump performed
  • ~20:00: Cryo problem - no beam until Thu. morning.

Report from 8h30 meeting

Report from the 17:00 meeting

Weekly report at LMC

Tuesday 20th April 2010
  • 02h30: Ramp started. Sector 78 tripped. Recovery. Pre-cycle.
  • 06h30: Machine ready again. Injection setup.
  • 11h30: Start ramp.
  • 12h00: Beams dumped due to RQTD, RQTF trips. Recover. Pre-cycle.
  • 17h00: Ramp to 3.5 TeV.
  • 18h30: Start squeeze all 4 IR's.
  • 23h00: All 4 IR's at 2m.
Report from 8h30 meeting
Monday 19th April 2010
  • 08h30: Beams at 3.5 TeV. Preparing squeeze.
  • 10h00: Beam 2 dumped by LBDS fault. End of fill study for beam 1 (loss map).
  • 11h00: Ramp down.
  • 12h00: Access for LBDS.
  • 13h00: Recovery and injection setup.
  • 17h30: Start ramp. Squeeze studies. IR1/5/8 at 2m.
  • 21h30: End of squeeze studies.
  • 23h00: Machine ready for injection.

Report from 8h30 meeting

MP3 presentation