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Running scenario 2009/10

Running scenario 2009/10. Run through components – and then synthesis. 2009 - 2010. “ The CERN Management today confirmed the restart schedule for the Large Hadron Collider resulting from the recommendations from the Chamonix workshop.

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Running scenario 2009/10

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  1. Running scenario 2009/10 Run through components – and then synthesis

  2. 2009 - 2010 “The CERN Management today confirmed the restart schedule for the Large Hadron Collider resulting from the recommendations from the Chamonix workshop. The new schedule foresees first beams in the LHC at the end of September this year, with collisions following in late October. A short technical stop has also been foreseen over the Christmas period. The LHC will then run through to autumn next year, ensuring that the experiments have adequate data to carry out their first new physics analyses and have results to announce in 2010. The new schedule also permits the possible collisions of lead ions in 2010.” • Chamonix Baseline • 1 month commissioning • 10 month proton physics • 1 month Lead Ions • “Short technical stop over Christmas period” • Shutdown – end September 2010 • Built in slip potential LHC 2009-2010

  3. Before full beam commissioning • Hardware Commissioning • Dry runs • Controls, LBDS, Injection, RF, Collimators etc. etc. • Underway seriously since March • Thanks to LHC EICs and operators – days shifts explicitly for this • Machine Protection Commissioning • In parallel with HWC • Machine Checkout • Sector by Sector as the circuits become available • Global before taking beam LHC 2009-2010

  4. Beam Tests • TI8 • 6/7 June - successful • TI2 • Next weekend – 11/12 July • TI2/TI8 • 29/30 August • Injection test – beam 1 • End W39 - 26/27 September – in agreement with Alice, possibly ions LHC 2009-2010

  5. Beam commissioning - what we learnt in 2009? • Very rapid progress • multiple system commissioning in parallel (probably too much) • Key beam instrumentation in reasonable shape • still much to do but basic functionality is there • only initial measurements made • Reasonable magnetic model of the machine • Optics and aperture measurements encouraging • Key systems only just started • Injection and protection, LDBS, Collimation, RF, Magnets • Machine Protection with beam LHC 2009-2010

  6. Rapid shake-out of snap-back and ramp with very safe beams Full Machine Protection Commissioning will need a well adjusted & understood machine LHC 2009-2010

  7. Beam -proposal Global Machine Checkout Essential 450 GeV Commissioning 450 GeV collisions Ramp commissioning to 1 TeV System/beam Commissioning Machine Protection Commissioning 4 TeV beam & collisions Full Machine Protection Commissioning System/beam Commissioning Pilot physics LHC 2009-2010

  8. BC plan 1/3 • Establish circulating beams (phase A.3 – fast track) • Key instrumentation and measurements • Tune, chromaticity, coupling, optics, orbit acquisition and correction • RF capture and adjustment • LDBS – phase 1 • Essential machine protection for 450 GeV+ • LBDS, BLMs, BIS, experiments  • Collisions at 450 GeV • few shifts LHC 2009-2010

  9. MPS 450 GeV Jorg Wenninger • Ring and injection BIS fully commissioned: • All USER_INPUTs operational • BEAM_PERMIT loops operational. • Fully commissioned clients (of course only non-beam part): • All injection BIC inputs. • PIC and WIC inputs. • PIC configuration is ‘light’ – all maskable. • Vacuum inputs. • Collimator inputs. • Experiment inputs. • SIS experiments protection. • BTV inputs (also SIS). • BLM inputs. • LBDS – 450 GeV OP.

  10. BC plan 2/3 • Ramp to low energy (~1 TeV) with safe beam • appropriate machine protection established • snapback, FiDeL predictions, etc. • RF • Q, Q’, orbit (10 Hz) measurements, • aim for circulating beam at 1 TeV • LDBS > 450 GeV • repeat until 2 beams@1TeV • Test collision procedure and possibly squeeze mechanics at 1 TeV LHC 2009-2010

  11. BC plan 3/3 • Commission Machine Protection appropriate for low intensity to 4 TeV: • FMCMs, PIC, Collimators, TCDQ, BLMs, BPM interlocks, SMPs, RF frequency, LBDS… • Beam and system commissioning - ramp to 4 TeV • beam dump, collimators, BLMs, RF… • Tune, Q’, coupling, orbit… • Two beam@4TeV... • Machine protection appropriate for increased intensity and squeeze commissioning. • Pilot physics LHC 2009-2010

  12. Christmas Technical Stop Would clearly need to define flat-line conditions, required support etc. over the break. • Given need to provide coverage for: • Personnel Safety: Access, Radio Protection, SOs etc. • LHC expert coverage • Controls, Beam Instrumentation, ABT, ABP, Survey, RF, Magnet, QPS, Cryogenics, Power converters, collimation, MP3, ELQA, vacuum, RP, access, industrial controls, machine protection • Other: IT, safety, transport • Injectors: operations plus expert coverage • Full LHC OP shift coverage (bearing in mind 2010) • Proposal: • Stop LHC with beam ~19th December 2009 • Earliest restart ~ 4th January 2010 • Could possibly use weekends either end -12 days stop LHC 2009-2010

  13. Xmas - delta LHC 2009-2010

  14. Questions • Can we do it effectively? • Machine availability compromised by lack of expert coverage? • Can we do it safely? • Will nQPS/EE etc be fully debugged etc? • Will the machine protection system be fully commissioned? • Status of LHC beam commissioning? • Initial commissioning • Requires comprehensive expert coverage across the board. Critically Machine protection system qualification could still be ongoing. Extensive expert presence required. • Pilot physics • Foresees low intensity physics running combined with system commissioning with beam, MPS commissioning, squeeze development etc. Expert presence required. • Stable physics running • Even with unchallenging betas, intensities… very optimistic LHC - running over Christmas

  15. Maintenance needs • Injectors • Making the assumption that essential maintenance can be performed before, after or in the shadow of LHC technical stops • LHC • Number of important issues to be addressed • Careful coordination will be required • However: no extended maintenance period appear to be required by LHC systems during the October 2009 through September 2010 run LHC 2009-2010

  16. Monthly technical stop • Programmed • 3 days including recovery and re-closure of ring • QPS plus power converters, controls, R2E etc. • Cool-down will become an issue • Mon – Wed allowing weekday time for re-setup with beam • Followed by one day set-up with beam and systematic checks of machine protection system • Clearly if major breakdowns occur at other times – advantage will be taken. • Injector maintenance in parallel is an option • [Have not considered scheduling of MD…] LHC 2009-2010

  17. Injectors 2009 (v3.5) LHC 2009-2010

  18. LHC 2009 LHC 2009-2010

  19. LHC 2010 – very draft LHC 2009-2010

  20. Conclusions • 4 stroke commissioning before beam • beam tests as last year • Staged MPS commissioning and fast track for first low intensity collisions • Full MPQ qualification before intensity increase followed by interleaved physics and commissioing. • Stop for 2 weeks at Christmas • No major injector/LHC driven maintenance required • Monthly maintenance periods are foreseen • Preliminary schedule for 2009/2010 shown LHC 2009-2010

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