View From CERN Summary of Upgrade Projects: Phase 1 IR upgrade: construction project LINAC4: construction project Phase 2 collimation: design finalization

View From CERN

Summary of Upgrade Projects:

Phase 1 IR upgrade: construction project

LINAC4: construction project

Phase 2 collimation: design finalization

PS2: conceptual design report

LSPL: conceptual design report

SLHC - Phase II upgrade: conceptual study

CM11 in FNAL; 27. & 28. October 2008 Oliver Brüning/CERN AB-ABP 0

Feedback on existing USLARP contributions

Comments on and interest in future USLARP - APUL projects

LHC Upgrade Plans and New Initiatives

LHC Phase 1 Insertion Upgrade: lead by Ranko Ostojic Project start: 2008 Conceptual Design Report: November 2008 Technical Design Report: Summer 2009 Magnet models: Fall 2009 Pre Series Quadrupoles 2010 String test 2012 to 2013 Installation in 2013-2014 shutdown Commissioning during 2014 run

Oliver Brüning/CERN AB-ABP 1

CM12 in Napa; 8. - 10. April 2009

Phase 1 IR Upgrade Constraints Interfaces with the experiments: Very tight interfaces between

the triplet, TAS, shielding, vacuum and survey equipment, and beam instrumentation; no possibility of reducing L* (23m).

Cryogenics: Ultimate cooling capacity is 500 [email protected] in each triplet. Replacement of triplets in IR1/5 requires at present warm-up of 4 sectors.

Chromatic aberrations: Reduction of * drives chromatic aberrations all around the LHC. A new optics solution for all arcs and insertions is necessary.

Accessibility and maintenance: Severe space constraints around IP1 and IP5 for any new equipment. New magnets must be similar in size to the LHC main dipole.

Upgrade implementation: during the extended shutdown, compatible with CERN-wide planning (Linac4 commissioning, phase-I upgrade of the experiments).

CM12 in Napa; 8. - 10. April 2009 Oliver Brüning/CERN AB-ABP 2

Courtesy of Ranko Ostojic

LHC IR Upgrade Phase I

CERNSLHC-PP

(CEA, CIEMAT, CNRS, STFC)

Special French contribution(CEA, CNRS)

US-APUL(BNL, Fermilab)

• D1 separation dipole• Cold powering

• Quadrupole components• Cryostat components• Production of the correctors

• Design and construction of the model quadrupole• Design of the correctors• Design of the cryostats

• Quadrupole production• Cryostating and testing• Power converters• Protection• String test• Integration

Phase 1 Collaborations


Courtesy of Ranko Ostojic

Goals for the LHC Phase 2 IR UpgradePhase II

Identify new IR layouts and magnet technologies that allow a ten fold increase in the nominal LHC luminosity (and radiation): Prepare a solution that can withstand the radiation for operation with L = 1035 cm-2 sec-1

The Phase II upgrade should be implemented once the Phase I solution reaches the end of the magnet lifetime (700 fb-1)

After 4 to 5 years of the Phase I upgrade operation assuming the Phase I operation reaches L = 3 1034cm-2sec-1

Earliest installation by 2018 requires substantial R&D

There are currently 2 options under study: 25 ns option using integrated ‘slim magnets’ inside the detectors and CRAB cavities 50 ns option using above ‘ultimate’ beam intensities


CM12 in Napa; 8. - 10. April 2009

LHC Upgrade Plans and New InitiativesCERN New Initiatives

LHC collimation:Phase 2 collimation project lead by Ralph Assmann

review by 2009 (cryo collimators) with final decision once

operational experience becomes available from LHC

LHC injector complex: LINAC4 project lead by Maurizio Vretenar

approved construction project (construction started in 2009)

with connection to PSB by 2013 with operation in 2014 PS2 design study lead by Michael Benedikt LSPL design study lead by Roland Garoby SPS upgrade study team lead by Elena Shaposhnikova


CM12 in Napa; 8. - 10. April 2009

Status of Linac4 collaborations H-

source RFQ DTL

45 keV 3 MeV 50 MeV 90 MeV 160 MeV

chopper line CCDTL PIMS transfer line to PSBLEBT

352 MHz 704 MHz

80 m

COMPLETED

Discussions with Saudi Arabia (DTL tanks) and ESS-Bilbao (drift tubes)

French contribution: RFQ design and test, RF amplifiers, modulators - being signed

US contribution: Laser Profile monitor (+ extension ?), under discussion

CANCELLED

ISTC Project (Russia) for CCDTL approved

PIMS as in-kind contribution from Poland still unclear

?

Transfer line vacuum chambers and supports from Pakistan

Tuners, couplers, waveguides from India, under discussion


Courtesy of Maurizio Vretenar

A bright point: civil engineering is progressing !

23.02.2009

27.11.2008

15.12.2008

17 days delay due to bad weather conditions


Courtesy of Maurizio Vretenar

General Comment on USLARP Collaboration

Finalization of existing deliverables has high priority: Installation of LHC luminosity monitors for 2009 run Prototype of rotatable collimators Nb3Sn magnet R&D with long prototype by 2010Success of the above deliverables is vital for successful launch of new production projects!


CM12 in Napa; 8. - 10. April 2009

General Comment on New initiatives at CERN: Studies at CERN lack resources and offer interesting areas for US contributions Help is desired in form of studies (USLARP) and hardware production and prototyping (APUL)

CERN Point of View on FY 2009 Activities


Feedback on current ‘Accelerator Systems’ activities:

Instrumentation: -Luminosity monitor

-AC dipole

-LLRF

Collimation: -Rotatable collimators -Crystal studies

Accelerator Physics studies: -e-cloud

-beam-beam

-PS2 studies

-CRAB cavities

CERN Feedback on FY 2009 Activities


Instrumentation: Luminosity monitor: -Installation now complete and in time for 2009 startup! -Still needs to be extended to 40 MHz operation! -Software: low level done at CERN but who is looking after application software and commissioning? LTV? AC dipole: -Interface not clearly defined? LLRF: -no longer requested for LINAC4 (only LHC: Loop setup) -there is also a European collaboration within FP7 (FLASH & Poland)



Collimation: Rotatable collimators and Crystal studies: -another example of very good collaboration! -Roman pot installation for SPS MDs incomplete in 2009 still needs follow-up in 2010Accelerator Physics Studies: e-cloud: -wide band feedback system could cure instability -proposal for using more simplified code to perform more detailed feedback simulations (combine with TMCI) -CERN is not interested in new code development and bench marking! (Use of existing tools and application!) -interested in SPS simulation at various energies



Accelerator Physics Studies: beam-beam: -interface definition with CERN could be improved -CERN is interested in more experimental studies (e.g. wire compensation experiments at RHIC) -CERN is interested in better theoretical understanding of experimental data (e.g. e-lens experiments at FNAL) -CERN is interested in new studies tailored to the new IR configuration of the Phase 1 IR upgrade



Accelerator Physics Studies: PS2 studies: -great success of incorporation at CM10! -PS2 optics and lattice progressed a lot thanks to USLARP

CRAB Cavities: -great potential for Phase 2 upgrade -limitations in KEK operation now understood -still requires extensive R&D for application in Hadron machine -prototyping and testing for application in LHC are not straight forward to plan

CERN Wish List for Activities Beyond 2009


LHC: Hollow electron beam lens: -could be an interesting option for Phase II collimation -outstanding R&D issues could be USLARP contribution -production could be part of existing APUL package

Beam-beam compensation: -interest in more experimental studies on wire compensation (experiments in RHIC) -more studies related to electron-lens compensation (better understanding of the Tevatron observations) -construction for LHC could be a future APUL package



LHC: CRAB cavities -currently studying options for installing prototype in LHC -work supported by a fellow under FP7 Eucard program -preparation of detailed test program and beam parameters with clear test objectives (currently being prepared by Rama Calaga from BNL) -CERN launched an impact study group (lead by Joachim Tuckmantel from the BE-RF group) to evaluate impact of tests on normal machine operation

-requires more support from USLARP and other major partners to finance the required R&D development



LHC: Beam instrumentation -radiation hard image sensors (cameras & photomultipliers) for equipment monitoring and data recording (e.g. synchrotron light monitor) -could be part of future APUL program

Collimation -Production of Phase 2 collimators could be part of a future APUL program



PS2: major achievement to include PS2 in USLARP activities -baseline lattice and optics have well advanced thanks to USLARP contributions!

still need key support in major areas: -comparative studies on layout with different super- symmetries -correction systems (linear & non-linear) -collective effects & feedback -collimation system -40 MHz tuneable RF system (e.g. impedance) -could benefit from USLARP studies and LTVs



LINAC4 and SPL:

Beam instrumentation -H- emittance measurement using H- laser profile monitor -studies could be part of future USLARP activity -upgrade could be part of future APUL program

Beam Dynamics -SPL project would be interested in beam dynamics studies (e.g. using IMPACT)

General QuestionsOption of future APUL projects:

CERN would be very interested in additional APUL projects in the future (e.g. Phase 2 Collimation)

Time scale? -when could future APUL projects be launched? (feedback from current APUL project not before 2011)

Oliver Brüning/CERN BE-ABP 19

CM12 in Napa; 8. - 10. April 2009

Documents

View From CERN Summary of Upgrade Projects: Phase 1 IR upgrade: construction project LINAC4: construction project Phase 2 collimation: design finalization