Running scenario 2009/10

Run through components – and then synthesis

2009 - 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 2009-201029 April 2009

“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.”

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 2009-201029 April 2009

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 2009-201029 April 2009

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 2009-201029 April 2009

Rapid shake-out of snap-back and ramp with very safe beams

Full Machine Protection Commissioning will need a well adjusted & understood machine

LHC 2009-201029 April 2009

Beam -proposal

LHC 2009-201029 April 2009

Global Machine Checkout

Essential 450 GeV Commissioning

System/beam Commissioning

Machine Protection Commissioning

4 TeV beam & collisions

450 GeV collisions

Ramp commissioning to 1 TeV

Full Machine Protection Commissioning

Pilot physics

System/beam Commissioning

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 2009-201029 April 2009

Energy Safe Very Safe450 1 e12 1 e11

1 TeV 2.5 e 11 2.5 e10

4 TeV 2.4 e10 probe

MPS 450 GeV

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.

9

Jorg Wenninger

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 2009-201029 April 2009

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 2009-201029 April 2009

Christmas Technical Stop

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 2009-201029 April 2009

Would clearly need to define flat-line conditions, required support etc. over the break.

Xmas - delta

LHC 2009-201029 April 2009

Piquet Expert CCC70 80 40

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 Christmas20th May 2009 14

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 2009-201029 April 2009

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 2009-201029 April 2009

Injectors 2009 (v3.5)

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LHC 2009

LHC 2009-201029 April 2009

LHC 2010 – very draft

LHC 2009-201029 April 2009

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 2009-201029 April 2009