14.10.2008 CLIC Workshop, CERN Marc Ross, ILC Global Design Effort 1 Content: Reason ILC - PM were there – introductory plenary Tolerances and ‘CTF4’

14.10.2008 CLIC Workshop, CERN Marc Ross, ILC Global Design Effort 1

Content:

<Feedback on the accelerator part of the clic workshop>

• Reason ILC - PM were there – introductory plenary

• Tolerances and ‘CTF4’. • Cfs activity linkage to ILC.• Diagnostics. • Meetings with Clic managers (including Tor,

chair of Clic Advisory – ACE). – the sentences - should be published Thursday.

• Pac statements.

14.10.2008 CLIC Workshop, CERN 2

CLIC/ILC Collaboration Report:

Marc Ross (Fermilab); for Nick Walker, Akira Yamamoto

Project ManagersInternational Linear Collider – Global Design Effort


CLIC – ILC Collaboration Strategy

What can ILC bring to CLIC?– Use the same cost basis. – develop a credible

comparison– (ILC will help in the costing of CLIC)

And CLIC to ILC:– CERN & CLIC-collaboration experts to work

with ILC team on common design issues

• The credibility of each project within our community will be facilitated through communication

J.P.Delahaye TILC08: 06/ 03/ 08 Marc Ross, ILC 4

Conclusion

• CLIC/ILC collaboration on subjects with strong synergy

Win –Win for both studies and for HEP• Ambitious but realistic and practical approach– starting on limited number of subjects

– conveners to define plan of (limited) actions

• Most efficient use of limited resources• Provide credibility to Linear Collider Community by:– mutual understanding of status, advantages, issues of both tech.

– responsible preparation of the future comparison of possible options for HEP with agreed pro&cons and criteria

Collaborative Competition and / or Competitive Collaboration

First Report to the community – TILC08 March 2008


CLIC – ILC Collaboration Chronology

• November 2007 – Barish / Aymar meet and agree on basis• First plenary meeting: February 8, 2008

– Working Group Definition and convener assignment (typically 2+2 conveners/group)

• Second plenary meeting: May 13, 2008– Working Group Mandates – what should be accomplished prior

to the fall project meetings• (CLIC 08 / ILC 08 workshops)

• Third plenary meeting – teleconference: September 19, 2008– Progress reports from each group

• Collaboration website:– http://clic-study.web.cern.ch/CLIC-Study/CLIC_ILC_Collab_Mtg/I

ndex.htm (Thank you Sonia)

http://clic-study.web.cern.ch/CLIC-Study/CLIC_ILC_Collab_Mtg/Index.htm

http://clic-study.web.cern.ch/CLIC-Study/CLIC_ILC_Collab_Mtg/Index.htm


Five (initial) Working Groups:

• Civil Engineering and Conventional Facilities (CFS)

• Beam Delivery and Machine Detector Interface• Detector and Physics• Cost and Schedule• Beam Dynamics

• Each is ‘mapped’ into a CLIC08 Working Group – – Each CLIC08 WG will have collaboration reporting in

their agenda– (CFS and Cost and Schedule will meet in the

‘Technical Issues, Integration & Cost’ Working Group)


Two new Working Groups planned:

• Damping Rings• Positron Generation

• Overlap criteria readily met (“subjects with strong synergy”)

• Conveners to be named soon

• (work already started)


ILC08• Chicago, November 16-20, 2008

• Presentation of Collaboration WG activities to GDE

• Convener instructions:

• “It is important that we maintain a visible component in the working groups to address those identified issues of common interest between the CLIC and ILC collaborations. Specifically the ILC08 WG (where appropriate) should include in their schedule some block to discuss the collaborative work. It is expected that a brief progress report on CLIC-ILC collaboration activities will form part of the close-out summary.

• “The ILC-CLIC collaboration is currently focused on four working groups (five including Physics and Detectors) which have identified points of contact. As conveners of the ILC08 WGs, please make sure the relevant people are included in the planning discussions for this part of the programme.”


Review of Mandates (CFS):• both groups will work together on areas of mutual interest for

both projects, including :

• Civil Engineering Studies– Optimisation of Tunnel and Shaft diameters, distance between shafts

(linked to safety)– Overall layout of the machine and interaction region infrastructure– Shallow site v Deep Tunnel Option– Tunnel– Single Tunnel v Double – Safety issues such as emergency egress– Environmental issues

• Other Infrastructure– Cooling Water ?– Power Distribution– Air Handling– Transport Issues– Radiation simulations / shielding ?


Review of Mandates (BDS):• provides a forum where those technically responsible

– for the beam delivery systems and – for the issues at the interface between the machines and experiments from the

ILC and CLIC projects • can meet and discuss issues of mutual interest.

• The subjects treated cover everything of common importance to the machines and experiments and includes,

– (but not limited to), – machine performance for the experiments, – design and integration of the beam delivery system and – corresponding interaction regions and experimental areas, – experimental beampipes and the vacuum, radiation shielding and monitoring, – collimation system, – beam instrumentation, – luminosity and background measurement and monitoring, – mechanical supports and stabilisation, – design of the near-beam forward detectors, – data exchange and common safety issues.



Review of Mandates: (Cost and Schedule)


Review of Mandates: (Beam Dynamics)

The working group should foster the exploitation of synergy between the ILC and CLIC beam physics studies. It should promote common meetings, standards, codes and studies.


Collaboration issues

• Note the nature of the collaboration:– What does each team bring?– What does each expect?

– ILC to CLIC:• Use the same cost basis. • (ILC could even help in the costing of CLIC.)

– CLIC to ILC:• CERN expertise helpful in design studies

• Work a practical balance into the mandates


Test Facility after CTF3

• Hans Braun

16

A next facility towards CLICA next facility towards CLIC

FootprintFootprint

100 m100 m

TBATBA

DBADBA0.48 GeV, 4.2 A 0.48 GeV, 4.2 A

DLDL

CR2CR2

CR1CR1

CompressionCompression2 x 3 x 42 x 3 x 4

DB Turn aroundDB Turn around0.48 GeV, 101 A 0.48 GeV, 101 A

6.5 GeV, 1.2 A6.5 GeV, 1.2 A

0.2 GeV, 101 A 0.2 GeV, 101 A

CALIFES type injectorCALIFES type injector0.2 GeV, 1.2 A0.2 GeV, 1.2 A

17

Drive Beam Accelerator DBADrive Beam Accelerator DBA

– Nominal CLIC DBA injectorNominal CLIC DBA injector (thermionic or Photo injector, depending on results of PHIN tests) (thermionic or Photo injector, depending on results of PHIN tests)– 2 nominal accelerator modules 2 nominal accelerator modules equipped with nominal 33 MW, 1 GHz, 50 Hz, 140 equipped with nominal 33 MW, 1 GHz, 50 Hz, 140s pulse length klystronss pulse length klystrons development of nominal drive beam klystrons & modulators required development of nominal drive beam klystrons & modulators required– 58 nominal accelerator modules with reduced pulse length klystrons (6 58 nominal accelerator modules with reduced pulse length klystrons (6 s) s)

Total length ≈ 200 m, nominal 4.2 A beam Total length ≈ 200 m, nominal 4.2 A beam

final energy 0.48 GeV instead of 2.4 GeV for CLICfinal energy 0.48 GeV instead of 2.4 GeV for CLIC66s pulse length instead of 140s pulse length instead of 140ss, for economy, sufficient to produce one nominal bunch trainfor economy, sufficient to produce one nominal bunch train

all hardware nominal and re-usable for CLIC !all hardware nominal and re-usable for CLIC !

100 m

TBA

DBA0.48 GeV, 4.2 A

DL

CR2

CR1

Compression2 x 3 x 4

DB Turn around0.48 GeV, 101 A

6.5 GeV, 1.2 A

0.2 GeV, 101 A

CALIFES type injector0.2 GeV, 1.2 A

18

Delay Loop + Combiner RingsDelay Loop + Combiner Rings + Turnaround + Turnaround

– Nominal CLIC Delay Loop, 2 x current multiplicationNominal CLIC Delay Loop, 2 x current multiplication– Nominal CLIC combiner ring 1 , 3 x current multiplicationNominal CLIC combiner ring 1 , 3 x current multiplication– Nominal CLIC combiner ring 2 , 4 x current multiplicationNominal CLIC combiner ring 2 , 4 x current multiplication– Nominal DB turnaround with bunch compressorNominal DB turnaround with bunch compressor

Total beamline length ≈800 m, Total beamline length ≈800 m, all components nominal and re-usable for CLICall components nominal and re-usable for CLIC

Magnets operate at 1/5 of nominal strength.Magnets operate at 1/5 of nominal strength.

100 m

TBA

DBA0.48 GeV, 4.2 A

DL

CR2

CR1



6.5 GeV, 1.2 A

0.2 GeV, 101 A


19

all components nominal and re-usable for CLIC

all components nominal and re-usable for CLIC

Two Beam DemonstratorTwo Beam Demonstrator- 46 nominal CLIC modules - 46 nominal CLIC modules (type 1, 6 accelerating structures,1 main beam quadrupole, (type 1, 6 accelerating structures,1 main beam quadrupole, 3 power extraction structures and 2 drive beam quadrupoles per modules 3 power extraction structures and 2 drive beam quadrupoles per modules– Drivebeam corresponds to 1/10 of a nominal decelerator sector with Drivebeam corresponds to 1/10 of a nominal decelerator sector with deceleration to nominal final energy of T=0.24 GeV deceleration to nominal final energy of T=0.24 GeV– Main beam gets a total acceleration of 6.3 GeVMain beam gets a total acceleration of 6.3 GeV– Califes type 0.2 GeV injector , Califes type 0.2 GeV injector , (but with nominal CLIC main beam current 1.2 A (but with nominal CLIC main beam current 1.2 A and 156 ns pulselength) and 156 ns pulselength)– total length ≈120 mtotal length ≈120 m

100 m

TBA

DBA0.48 GeV, 4.2 A

DL

CR2

CR1



6.5 GeV, 1.2 A

0.2 GeV, 101 A


20

CLIC 3 TeV

e+ main linace- main linac , 12 GHz, 100 MV/m, 21.1 km

BC2BC2

decelerator, 24 sectors of 878 m

IP

BDS2.75 km

BDS2.75 km

48.4 km

drive beam accelerator2.38 GeV, 1.0 GHz

combiner rings Circumferences delay loop 72.4 m

CR1 144.8 mCR2 434.3 m

CR1CR2

delayloop

326 klystrons33 MW, 139 s

1 km

CR2delayloop

drive beam accelerator2.38 GeV, 1.0 GHz

326 klystrons33 MW, 139 s

1 km

CR1

TAR=120m

TAR=120m

245m 245m

booster linac, 9 GeV

BC1

e+ DR365m

e+ PDR365m

e- DR365m

e- PDR365m

linac, 2.2 GeV

e+ injector,

0.2 GeV

e - injector, 0.2 GeV

Demonstrate

21

Next facility towards CLICNext facility towards CLIC

RationalRational

• Creates drive beam train Creates drive beam train nominanominal for everything but energy (0.48GeV instead of 2.4 GeV)l for everything but energy (0.48GeV instead of 2.4 GeV)

• Demonstrates Demonstrates nominalnominal DBA injector with all parameters DBA injector with all parameters

•Demonstrates Demonstrates nominalnominal DBA module with klystron and modulator with all parameters DBA module with klystron and modulator with all parameters

• Demonstrates two beam acceleration over significant distance with fully Demonstrates two beam acceleration over significant distance with fully nominalnominal modules modules

• Forces pre-series production of all mass produced components→ Industrialization Forces pre-series production of all mass produced components→ Industrialization

• Well suited to create confidence in CLIC technology Well suited to create confidence in CLIC technology

• All hardware investment is re-usable for real CLICAll hardware investment is re-usable for real CLIC

Problems Problems

• Combiner ring beam dynamics more difficult than in real CLIC Combiner ring beam dynamics more difficult than in real CLIC (like in CTF3)(like in CTF3)

• Expensive Expensive (but re-usable)(but re-usable)

• No obvious use of 6.5 GeV main beam but for testing No obvious use of 6.5 GeV main beam but for testing (injector for proto damping ring, FEL ? )(injector for proto damping ring, FEL ? )

22

Where can we put it ?Where can we put it ?

Could fit in one of the big experiment halls at CERNCould fit in one of the big experiment halls at CERNProblem: They are all in useProblem: They are all in use

Can be put in final location Can be put in final location Problem: immediate cost and time delaysProblem: immediate cost and time delays

23

Tentative schedule for CLIC R&D 2010-2016Tentative schedule for CLIC R&D 2010-2016

2010 2011 2012 2013 2014 2015 2016

module test design build commission

TBL+finish TBLprogram

modify X RF test X RF test X RF test X RF test X RF test

phase feedforward design buildgeneral

DBA Injector build commissionNominal DBA modulesEconomy DBA modules commissioncombiner rings commissionTBA commissioncivil engineering Design

Year

commission & run

X-band structure development

build & commission additional test ports

RF test program

Stand aloneX-band sources

build commissionbuild

DesignDesign

build

LC Detector R&D continuation

continuationDesign & beam dynamics studies

build

consolidation

Nex

t fac

ility

tow

ards

CLI

CCT

F3+

DesignDesign

build

continuation

24

More issuesMore issues

• Demonstration of injector parameters Demonstration of injector parameters (polarised e(polarised e--, unpolarised and polarised e, unpolarised and polarised e++) )

• Demonstration low emittance generation Demonstration low emittance generation (ATF, SR sources, …)(ATF, SR sources, …)

• Demonstration low emittance transport Demonstration low emittance transport (SLC heritage, Linac driven FEL’s, …) (SLC heritage, Linac driven FEL’s, …)

• Demonstration CLIC final focus parameters and stability Demonstration CLIC final focus parameters and stability (ATF2, …)(ATF2, …)

• Integration of R&D program with other relevant facilities around the world Integration of R&D program with other relevant facilities around the world (see Nobu’s talk)(see Nobu’s talk)

• Name for next facilityName for next facility

• … …

You are welcome to discuss your ideas in the working groups !You are welcome to discuss your ideas in the working groups !


The 2-beam CLIC module

• Germana Riddone

CLIC08 - Module layout and requirements, GR, 15.10.2008 26

Module with tank configurationModule with tank configuration

Collaboration with Dubna-JIRN, CEA-Saclay, HIPCollaboration with Dubna-JIRN, CEA-Saclay, HIP

Configuration #1



Module with sealed structure configurationModule with sealed structure configurationConfiguration #2

CLIC08 - Module layout and requirements, GR, 15.10.2008 27Collaboration with Dubna-JIRN, CEA-Saclay, HIPCollaboration with Dubna-JIRN, CEA-Saclay, HIP


Main technical requirements

• Structure fabrication and assembly (CERN, HIP, CEA)– Shape accuracy for acc. structures: 5 m– Shape accuracy for PETS: 30 m

• Alignment/supporting system (CERN, HIP, DUBNA, NIKHEF): possibility to align separately main beam and drive beam independently

– Main beam• Accelerating structures on girders (cradles mechanically attached to a girder and

linked by rods to the adjacent one): alignment system integration • Main beam quadrupole on dedicated supports: stabilization and alignment system

integration– Drive beam

• PETS and quadrupoles on the same girders• Alignment system integration

• Tolerances for pre-alignment– accelerating structure pre-alignment transverse tolerance 14 m at 1– PETS pre-alignment transverse tolerance 30 m at 1– quadrupole pre-alignment transverse tolerance 17 m at 1s


CLIC08 - Module layout and requirements, GR, 15.10.2008 29CLIC08 - Module layout and requirements, GR, 15.10.2008 29

Main technical requirements

• Stabilization system (CERN , LAPP, SLAC, Monalisa, DESY, CEA-IRFU/SIS,..)– 1.3 nm at 1 Hz in vertical direction – 14 nm at 1 Hz in horizontal direction

• Vacuum system – 5.10-9 mbar for main beam (simulation under way to confirm the

requirement);– dynamics of the H2O pumping in limited conductance systems must be better

understood: an experimental set-up is being implemented to study H20 pumping dynamics

• Cooling system (CERN, HIP, WUT)Dissipated power:– AS: 600 W – PETS: 110 W– 7.7 kW for a module

Most stringent requirement comes from accelerating structures Different operation modes to be taken into account with different thermal loads

All these systems have to be studied taking into account acceleration environment and tunnel integration

CLIC08 - Module layout and requirements, GR, 15.10.2008 30CLIC08 - Module layout and requirements, GR, 15.10.2008 30

Conclusions• The CLIC study is carrying out a number of specialized development programs of

subsystems such as high-power rf structure and micron precision alignment, and in parallel the specification for the CLIC module sub-systems is being finalized.

• Module design and integration have to be studied for different configurations, identifying thus areas needing dedicated study and design.

• Potential advantages and drawbacks are being evaluated for each configuration.• Important aspects of cost are raised and basic parameters provided for other areas

of the study. • The module study is important as it raises feasibility issues and provides basic

parameters for other areas of the CLIC study synergy with several other working groups, such as beam physics, stabilization, CES, cost and schedule,..

• Integration of the systems in terms of space reservation has been done for all the module types and detailed design started for the main systems, such vacuum, cooling, alignment, stabilisation…

work from collaborations is indispensable and highly appreciated

• CLIC module in CLEX from 2010– Test/CLIC modules– String of modules


Beam Instrumentation

• Thibault LeFevre

14.10.2008 CLIC Workshop, CERN

32

CLIC 08CLIC 08

Instrumentation requirements

Feasibility issues to be studied for the CDR

- Need to study the Machine Protection System for both the Drive and Main beams and to develop a Beam loss monitoring system along the CLIC linac (both beams)

- Very tight requirements for measuring micrometer beam size, 40-75microns short bunch length and beam position with a 50nm resolution, (achievable in principle)

- Reliability and availability of roughly 5000 high resolution (50nm) BPMs and 150000 wake field monitors with 5m resolution

- Impact on performance : Does the tuning procedure require all instruments to work simultaneously ?- Industrial series production : study the Impact on cost

- Beam synchronization implies a 0.1deg at 12GHz phase measurement with an adequate feed-forward system and a stability of the Drive Beam energy and intensity of 3.10-5


ILC / CLIC management meeting

• Joint Statements• Additional working groups• …

Thursday, Nov 13

• Joint statements on the development of CLIC and ILC

Documents

14.10.2008 CLIC Workshop, CERN Marc Ross, ILC Global Design Effort 1 Content: Reason ILC - PM were there – introductory plenary Tolerances and ‘CTF4’