j.p.delahaye clic @ ace 16-01-08 1 clic a dvisory c ommitte e (ace) introduction to the clic...

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J.P.Delahaye CLIC @ ACE 16-01-08 1

CLIC Advisory CommitteE (ACE)

Introduction to the CLIC Advisory Committee meeting

(16-18/01/08)

CLIC status, developments from last ACE meeting

J.P.Delahaye for

The Compact LInear Collider (CLIC) Study Team

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Outline

•Welcome and organisation•Reminder of mandate and previous meetings•Follow-up of ACE’s recommendations•Evolution of main parameters (Nom and low(er)

Energ)•Progress of CTF3 •CLIC Workshop•From R&D towards Project Oriented Management•Conclusion

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• Thanks to participants of first meeting:•M.Huening/DESY•A.Mosnier/CEA•T.Raubenheimer/SLAC (Chair)• V.Shiltsev/FNAL

• Welcome the one who could not participate last time:•L.Evans/CERN•T.Shintake/Riken

• Welcome to new members •P.Raimondi/ INFN •N.Toge/KEK

• Any organisational or administrative issues: Sonia (164454)

Welcome

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CLIC Advisory Committee•Mandate (Link)

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Documentation•ACE site:

http://clic-meeting.web.cern.ch/clic-meeting/2007/CLIC_ACE/index.htm

•Improvements suggestions welcome (useful doc? Public?)

•General documentation about the CLIC study:http://clic-study.web.cern.ch/CLIC-Study/

•CLIC scheme description:•http://preprints.cern.ch/yellowrep/2000/2000-008/p1.pdf

•CLIC Physicshttp://clicphysics.web.cern.ch/CLICphysics/

•CLIC Test Facility: CTF3http://ctf3.home.cern.ch/ctf3/CTFindex.htm

•CLIC technological challenges•http://indico.cern.ch/conferenceDisplay.py?confId=a057972

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Specific to this meeting

•Agenda: focused on RF structures: http://indico.cern.ch/conferenceDisplay.py?confId=24998

•Mandate: Review and assess R&D programme of RF Structures (Accel. And PETS) towards demonstration of fully equipped structures with nominal parameters by 2010

•This room reserved for the Committee up to Friday night

•Coffee breaks here (Committee and Speakers)

•Lunches in CERN Main Cafeteria (tickets provided to Committee)

•Dinner to-morrow in Glass Box (Main Cafeteria): (Committee and Speakers)

•Report on ACE’s findings and recommendations by chairman to CLIC/CTF3 collaboration Board on January 24

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First ACE meeting (22-26/06/07)•Specific Mandate (Link) The first CLIC-ACE meeting is mainly devoted to an introduction of the

committee members to the present status and future plans of the CLIC study, via an extensive overview of the various aspects of the CLIC study, especially the CLIC design and plans to address the major key issues, demonstrate the feasibility of the CLIC technology and prepare a conceptual design report by 2010. Analysis and specific recommendations by the committee concerning the following (non-exhaustive list of) subjects, would be greatly appreciated:

•CLIC scheme and (new parameters).•major key-issues to be addressed before the CLIC technology can be considered feasible.•work programme to address the various key issues.•adequation of (Material & man-power) resources (incl. external collaborations) to the work prog.

•ACE report: http://clic-meeting.web.cern.ch/clic-meeting/CTF3_Coordination_Mtg/Report_1_CLIC-ACE.pdf

•Presentation Tor to CLIC/CTF3 collaboration Board:http://clic-meeting.web.cern.ch/clic-meeting/CTF3_Coordination_Mtg/

Slides_CLIC_ACE.CTF3_Collab.pdf

•Presentation ACE conclusions/recommendations to SPC: (Link)

•Minutes and conclusion SPC: http://clic-meeting.web.cern.ch/clic-meeting/CTF3_Coordination_Mtg/SPC_Minutes_CLIC_sep07.pdf

The Scientific Policy Committee took note of the reports and welcomed the setting up of the CLIC Advisory Committee. Noting the good progress on CLIC, the SPC underlined that many challenges were still to be overcome.

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Final ACE Comments

•Very impressed with CLIC effort•Large amount of progress over the last decade•Has the potential to offer a real path to multi-TeV e+/e- LC

•CTF3 will demonstrate most of the critical issues

•Potential to create an 800 MeV test linac using CTF3 TBL–Clearly needed for TDR but likely possible well before

•Like to have the next meeting focused on the structure and PETS development program

•Dates TBD but probably January

•Excellent presentations•Thanks to all participants (extra thanks to Sonia!)

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Summary of ACE’s recommendations about structures and PETS:

•Additional tests to benchmark P/c scaling law•Tests pieces of CLIC structures

•Do not mix fabrication, damping & gradient issues•Test of quadrant separate from gradient•Develop tests (separate from gradient issues) to validate choices

•Develop a detailed structure development & test program•Fabrication and testing schedule with milestones and decision points•Focus on separate issues (gradient, damping. Cost)

•Develop a PETS test program (including Petsonof) similar to the one on structures

•Maximise the tests facilities: •Take advantage as much as possible of SLAC and KEK existing

facilities - invite FNAL to participate•Strong support to 12 GHz power test stand

•Evolve from R&D towards project management

(Major subject of this meeting: Alexej, Igor, Steffen, Walter, and co )

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Collaboration with SLAC

•Structure fabrication

•Structure (Accel & PETS) tests on Test Facilities (NLCTA)

•Providing design of RF components

•Developing and fabricating X band components: (Klystrons)

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SLAC collaboration on Klystrons

Decision by Finance Committee (Dec 07) to order SLAC (586k$):

• Devel of 12 GHz Klystron(50 MW, 1.5 s, 50 Hz)

• Fab. 1 Klystron for CERN• Offer based on 3 Klystrons (PSI, Trieste, LNF)• Availability Spring 09

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A 12 GHz stand alone power source @ CERN

12 GHz power source: common interest with PSI, INFN-Frascati & Trieste

In parallel with power tests in CLEX

Operating April 09

klystron50 MW1500 ns

test slot

200 MW, 0 ... 100 nsor

100 MW, 0 ... 350 ns

Modulator

hybrid

pulse compression

phasemodulation

Independent 24/7 testing with fast turn around

Variable pulse length

High repetition rate

Easier to operate Derived from NLC 11.4 GHz klystron

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Collaboration with KEK

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Collab with FNAL

•FNAL expertise on fabrication of RF structures strongly appreciated

•Informal contacts with FNAL experts (S.Holmes, Y2K) who expressed interest but did not provide too much hope on possible formal agreement:

•FNAL future focused on ILC and/or project X•Lack of extra resources

• Recent invitation to present CLIC at FNAL with strong support of P.Oddone

• Suggestions & support of ACE welcome

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Summary of ACE’s recommendationsabout parameters

•Strong support to change of parameters•100 MV/m and 12 GHz•Coherent set of parameters•Concerned with long RF pulse, tight tolerances and low

emittances

•Second iteration of coherent set of parameters

•Adapt optimum structure to low charge and wake field•Aim for short(er) RF pulse length

•Suggest staged approach to 3 TeV•Low energy (500 GeV? 1 TeV?) with ATF emittances and

NLC tolerances•Range of performances with more challenging parameters

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Optimization constraints(A.Grudiev and D.Schulte)

Beam dynamics (BD) constraints based on the simulation of the main linac, BDS and beam-beam collision at the IP updated:

• N – bunch population depends on <a>/λ, Δa/<a>, f and <Ea> because of short-range wakes

• Ns – bunch separation depends on the long-range dipole wake and is determined by the condition:

Wt,2 · N / Ea < 10 V/pC/mm/m · 4x109 / 150 MV/m

RF breakdown and pulsed surface heating (rf) constraints:• ΔTmax(Hsurf

max, tp) < 36 and 60 K

• Esurfmax < 220, 260 and 300 MV/m

• Pintp1/3/Cin = 18 MW·ns1/3/mm @ X-band

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Parameters of old and new structures(A.Grudiev)

Structure CLIC_C CLIC_D CLIC_E CLIC_F CLIC_H CLIC_G

Frequency: f [GHz] 12 12 12 12 12 12

Average iris radius/wavelength: <a>/λ 0.12 0.12 0.11 0.145 0.11 0.11

Input/Output iris radii: a1,2 [mm] 3.87, 2.13 3.87, 2.13 3.50, 1.99 3.88, 3.39 3.41, 2.09 3.15, 2.35

Input/Output iris thickness: d1,2 [mm] 2.66, 0.83 2.66, 0.83 2.33, 0.83 2.83, 2.66 2.83, 0.83 1.67, 1.00

Group velocity: vg(1,2)/c [%] 2.39, 0.65 2.39, 0.65 1.88, 0.51 2.25, 1.47 1.42, 0.61 1.70, 0.84

N. of reg. cells, str. length: Nc, l [mm] 24, 229 24, 229 24, 229 24, 229 24, 229 24, 229

Bunch separation: Ns [rf cycles] 8 6 6 13 6 6

Number of bunches in a train: Nb 311 323 510 50 422 312

Pulse length, rise time: τp , τr [ns] 297, 30 251, 30 372, 41 104, 11 324, 33 240, 22

Input power: Pin [MW] 64.6 69.8 57.8 102 59.7 63.9

Max. surface field: Esurfmax [MV/m] 298 310 285 220 259 258

Max. temperature rise: ΔTmax [K] 56 53 59 31 56 36

Efficiency: η [%] 23.8 27.0 29.2 13.4 27.8 26.3

Luminosity per bunch X-ing: Lb× [m-2] 1.3×1034 1.3×1034 1.08×1034 2.2×1034 1.13×1034 1.22×1034

Bunch population: N 4.0×109 4.0×109 3.35×109 7.8×109 3.47×109 3.72×109

Figure of merit: ηLb× /N [a.u.] 7.7 8.7 9.4 3.8 9.1 8.6June 2007 Dec 2007

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Evolution of CLIC parameters @ 3 TeVhttp://clic-meeting.web.cern.ch/clic-meeting/clictable2007.html

Parameter Symbol 2006 ACE07 ACE08 Unit

Center of mass energy Ecm 3000 3000 3000 GeV

Luminosity L 6.5 7 5.9 1034 cm-2 s-1

Luminosity (in 1% of energy) L99% 3.3 2 2 1034 cm-2 s-1

Main Linac RF Frequency fRF 30 12 12 GHz

Loaded Accelerating Gradient G 150 100 100 MV/m

Two linac length llinac 28 41.7 41.7 km

Linac repetition rate frep 150 50 50 Hz

No. of particles / bunch Nb 2.56 4.0 3.72 109

No. of bunches / pulse kb 220 311 312 -

Bunch separation tb 0.267 0.667 0.5 ns

RF pulse duration t 69.7 297 241 ns

Beam power / beam Pb 20.3 15 14 MW

Transverse horizontal/vertical emittance γεx / γεy 660/10 600/10 660/20 nm rad

Horizontal/Vertical IP beam size before pinch σ*x/ σ

*y 60/07 53/1 40/1 nm

Beamstrahlung energy loss δB 16 31 29 %

Hadronic events / crossing Nhadron 0.73 3.23 -

Wall-plug power to beam efficiency ηwp-rf 9.7 7.7 8.8 %

Total site AC power Ptot 418 388 322 MW

Overall site length ltot 33.2 48.2 47.9 km

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e+ injector, 2.4 GeV

e- injector2.4 GeV

CLIC overall layout3 TeV

e+ main linace- main linac , 12 GHz, 100 MV/m, 21 km

BC2BC2

BC1

e+ DR365m

e- DR365m

booster linac, 9 GeV, 2 GHz

decelerator, 24 sectors of 868 m

IP1

BDS2.75 km

BDS2.75 km

48 km

drive beam accelerator2.37 GeV, 1.0 GHz

combiner rings Circumferences delay loop 80.3 m

CR1 160.6 mCR2 481.8 m

CR1CR2

delayloop

326 klystrons33 MW, 139 s

1 km

CR2delayloop

drive beam accelerator2.37 GeV, 1.0 GHz

326 klystrons33 MW, 139 s

1 km

CR1

TAR=120m

TAR=120m

245m 245m

Drive Beam Generation Complex

Main Beam Generation Complex

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CLIC & LC parameters @ 500 GeV http://clic-meeting.web.cern.ch/clic-meeting/ComparisonTable.html

Parameter Symbol CLIC CLIC CLIC ILC NLC Unit

Center of mass energy Ecm 3000 1000 500 500 500 GeV

Main Linac RF Frequency fRF 12 12 12 1.3 11.4 GHz

Luminosity L 5.9 2.25 2.24 2 2 1034 cm-2 s-1

Luminosity (in 1% of energy) L99% 2 1.08 1.36 1034 cm-2 s-1

Accelerating gradient (unloaded) Gacc 100 100 100 30 50 MV/m

Linac repetition rate frep 50 50 100 5 120 Hz

No. of particles / bunch Nb 3.72 3.72 3.72 20 7.5 109

No. of bunches / pulse kb 312 312 312 2670 192

No. of drive beam sectors / linac Nunit 24 8 4 - - -

Overall two linac length llinac 41.7 13.9 6.9 22 14 km

Proposed site length ltot 47.9 19.5 12 31 19 km

DB Pulse length (total train) t 139 46 23 - - μs

Beam power / beam Pb 14 4.6 4.6 10.8 6.9 MW

Wall-plug power to beam efficiency ηwp-rf 8.7 6.1 6.1 9.4 7.1 %

Total site AC power Ptot 322 ~150 ~150 230 195 MW

Transverse horizontal emittance γεx 660 660 660 10000 3600 nm rad

Transverse vertical emittance γεy 20 20 20 40 40 nm rad

Nominal horizontal IP beta function β*x 4 20 15 20 8 mm

Nominal vertical IP beta function β*y 0.09 0.1 0.1 0.4 0.11 mm

Horizontal IP beam size before pinch σ*x 40 142 640 243 nm

Vertical IP beam size before pinch σ*y 1 2 5.7 3 nm

Beamstrahlung energy loss δB 29 11 7 2.4 5.4 %

No. of photons / electron nγ 2.2 1.2 1.1 1.32 1.3 -

No. of pairs (pTmin=20MeV/c, Î¸min=0.2) Npairs 45 17.1 11.5 -

No. of coherent pairs Ncoh 38 0.07 0.0001 107

No. of incoherent pairs Nincoh 0.44 0.09 0.05 105

Hadronic events / crossing Nhadron 3.23 0.29 0.1 -

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“Conservative” approach @ “low” energyWork in progress

•Adopt beam emittances and beam dimensions at IP close to the one studied at ATF and adopted for ILC

•Compensate lower luminosity by increased beam power (high linac repetition frequency) taking advantage of the reduced power consumption at 500 GeV and limited by :

•Overall power consumption not higher than at 3 TeV•Cooling per linac length not larger than at 3 TeV

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Beam emittances

Conservative approach:•Use a beam delivery system with relaxed parameters (similar NLC):

x=10 mm, y=0.1 mm•Assume emittances to be demonstrated in ATF:

At damping ring x=3m, y=10nmAt IP x=4m, y=40nm

•Tolerances improvement due to larger beam sizes•Luminosity reduction by 64 % @ 500 GeV ( 83% @ 3 TeV)

Epsx/Epsy ATF single bunch CLIC DR NLC ILC CLIC 500 GeV CLIC3 TeV (10-6 m-rad/10-9m-rad) achieved Goal Design present Cons. present Cons.

Charge/bunch (109) 3.8 ? 7.5 20 3.72 3.72 3.72 3.72 DR 4.2/21 3/2.5 0.38/4 2.2/13 8/20 0.55/5 3/10 0.55/5 3/10

Mult Fact: FF/DR 1.6/3 1.25/2 1.2/4 1.33/4 1.2/4 1.33/4 FF 3.6/40 10/40 0.66/20 4/40 0.66/20 4/40

x

* /y* (mm) 8/0.11 20/0.4 15/0.1 10/0.1 4/0.09 10/0.1

x* /y

* (nm) 243/3 640/5.7 142/2 285/2.8 40/1 156/1.5 L prop N/(x

* *y*) 0.785 0.42 1 0.36 1 0.17

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Beam emittances at Damping Rings

CLIC DRdesign

30

ATFachieved

ILC GeV 500

CLICGeV 500

CLICTeV 3

ATFDesign

SLC

CLIC DRdesign

0.001

0.010

0.100

1.000

10.000

0.1 1 10 100

Horizontal Emittance (rad-m)

Ve

rtic

al E

mit

tan

ce

(

rad

-m)

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Beam sizes at Collisions

R.M.S. Beam Sizes at Collision in Linear Colliders

ATF2

SLCFFTB

CLIC3000

Agressive

CLIC500

ILC500CLIC

3000Conservative

0.1

1

10

100

1000

10 100 1000Horizontal Beam Size (nm)

Ver

tica

l B

eam

Siz

e (n

m)

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Performances of Lepton Colliders

LEP

SLC

ILCCLIC

agressiv

CLICConserv

1.E+30

1.E+31

1.E+32

1.E+33

1.E+34

1.E+35

0 1 2 3 4 5

Energy (TeV)

Lu

min

os

ity

(c

m-2

se

c-1

)

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Luminosity @ 500 GeVfor various RF power and Accel. Gradient

Scaling to lower gradients:

•Constant emittance growth

•constant local beam stability)

Conservative emittances

Possible luminosity improvement by a factor 2 to 3 by:• Reduced gradient and reduced charge per bunch• Similar RF power per Linac unit length• Increased RF power (increased repetition frequency)

3 TeVtotal

RF power

3 TeVRF powerper linac

unit length

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Accelerating Structure Optimised @ 500 GeV

Larger aperture structures yield better performances:

•With agressive emittances:Gain of 25% with a/ = 0.15 •With conservative

emittancesGain of 150% with a/ = 0.20

3 TeVAgressiv

500 GeVAgressiv

500 GeVConserv

Case A: Agressive emittances

Case B: Conservative emittances

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Potential Practical Approach•Adopt “conservative beam emittances and beam dimentions

at IP close to the one studied at ATF and adopted for ILC: x=4m, y=40nm Luminosity reduction by a factor 2.5

•Compensate lower luminosity per pulse by increased repetition frequency:

•Lower gradient to limit power consumption per linac unit length•Possible improvement by a factor 2 to 3•

•Optimum accelerating gradient?•Cost issues as best trade off between overall linac length (civil

engineering) and power consumption •Staged approach with “conservative” accel gradient @ low

energy?

•Optimum accelerating structure?•Larger aperture structures better adapted to low energy

500GeV •Possible luminosity improvement by a factor 2.5•Cost issues for energy upgrade (structures are 8% of the 3TeV

cost)•Minimize structure replacement cost

•Advice of ACE on possible strategy appreciated

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Summary of ACE’s recommendations about Conceptual Design Report

•Development of a full CDR will be a large undertaking

•Resources may be better directed towards demonstrations•CTF3 demonstration addresses major technical issues

•Focus on elements that are unique to CLIC concept •Two-Beam-Accelerator concept•High gradient accelerator•Adopt more established parameters in other areas with a staged

approach to 3 TeV

•Develop international cost model – Important for acceptance of CLIC concept

•Need to show cost scaling with energy •Use ILC estimates wherever possible

–Participate in ILC engineering where common (civil, rf power, magnets, …)

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CERN participation to ILC Design Report & EU FP7 CNI

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CLIC/ILC collaboration

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CLIC /ILC Collaboration•Constructive exchange of view with B.Barish

during his visit at CERN in Nov 07http://www.linearcollider.org/cms/?pid=1000465

•Collaboration meeting with ILC Project managers and specific experts on 08/02/08 at CERN for collaboration on subjects with strong synergy between CLIC and ILC:

1) Civil Engineering and Conventional Facilities 2) Beam Delivery Systems & Machine Detector

Interface 3) Detectors 4) Cost & Schedule 5) Beam dynamics & Beam Simulations including

Low Emittance Transport

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CERN, 16-18 October 2007

CERN, 16-18 October 2007

CLIC Workshop 07

CLIC Workshop 07

CLIC'07 provides a forum to review all aspects related to the Accelerator, Detector and Particle Physics of a Multi-TeV Linear Collider based on the CLIC technology.

It is open to any interested Accelerator and Physics expert already part or not of the CLIC/CTF3 collaboration. The workshop will address in particular:

• Present status and future plans of the CLIC study • CLIC physics case and detector issues • The Test Facility CTF3 used to address major CLIC

technology issues • The ongoing CLIC R&D, future plans (including FP7

proposals) and open issues • The CLIC related collaborative efforts

The CLIC workshop will be held at CERN in the Main Auditorium, Main building, 1st Floor

Local Organising Committee • H.H. Braun (Chair) • R. Corsini • J-P. Delahaye • J. Ellis • S. Escaffre • G. Geschonke • A. de Roeck • W.D. Schlatter • D. Schulte • W. Wuensch

Program Advisory

Committee • M. Besançon • G. Blair • M. Calvetti • S. Chattopadhyay • T. Ekelof • A. Faus-Golfe • L. Garcia • T. Higo • H. Hoorani • Y. Karyotakis • E. Levitchev • K. Osterberg • M. Poelker • L. Rivkin • V.C. Sahni • G.D. Shirkov • S. Tantawi • M. Velasco • G. Wormser

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WelcomeParticipants: 200 (registered) from 49 Inst. of 19 countries •China: Tsinghua University•Finland: Helsinski Univ.- HIP•France: CNRS/IN2P3/LAL-LAPP LPNHE-LPSC, THALES, CEA DAPNIA•Germany: DESY-ANKA/FZK•Greece: Athens NTU-IASA- PATRAS•India: BARC-RRCAT•Iran: IPM•Italy: INFN/LNF-Napoly Fed.II•Japan: KEK•Norway: NTNU•Pakistan: NCP

•Russia: IAP—BINP-JINR•Spain: CIEMAT-IFIC-UPC•Sweden: Uppsala Univ.•Switzerland: CERN-ETHZ- IPP-PSI•Turkey: Ankara U-Dumlupinar

U TOBB Univ Eco&Tech•UK: COCKROFT-J.ADAMS- Lancaster Univ-Oxford- RHUL•Ukraine: IAP-NAS•USA: LBNL-Northwestern U.- TJNAF-OHMEGA- Oklahoma Univ-SLAC

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CLIC07 workshopChairman: H.Braun

•CLIC'07 provides a forum to review all aspects related to the Accelerator, Detector and Particle Physics of a Multi-TeV Linear Collider based on the CLIC technology.

•The workshop will address in particular:

• Present status and future plans of the CLIC study • CLIC physics case and detector issues • The Test Facility CTF3 used to address major CLIC technology

issues • The ongoing CLIC R&D, future plans (including FP7 proposals) and

open issues • The CLIC related collaborative efforts

• Agenda and slides (plenary and working groups)http://indico.cern.ch/conferenceOtherViews.py?view=standard&confId=17870

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CLIC technology the ONLY possible scheme to extend linear collider beam energy into Multi-TeV energy range

• Very promising results BUT CLIC technology not mature yet

• novel Ideas and Challenging R&D in world-wide collaboration

Nevertheless CLIC Conceptual Design with cost estimate by 2010

Your participation to the CLIC study during and after the workshop warmly welcome and appreciated

CTF3 technical meeting on 21-23/01/08

CLIC08 Workshop on 14-17/10/08

CLIC07 Conclusion(M.Calvetti/ CLIC Collab. Board chairman)

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CTF3 multi-lateral Collaboration Organized as a Physics Detector Collaboration

* India participating through a special agreement with CERN for the development of novel accelerator technologies

18 members represent. 23 institutes involving 16 funding agencies from 13 countries

Chairperson: M.Calvetti/INFN; Spokesperson: G.Geschonke/CERNMoU with addenda describing specific contribution

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CTF3 collaboration observers

Present collaboration with RAL on Laser development for PHIN in EU FP6 CARE

Discussion with possible future collaboration partners:

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Department of Atomic Energy (India)Finnish Industry (Finland)Helsinki Institute of Physics (Finland) IAP (Russia)Instituto de Fisica Corpuscular (Spain)INFN / LNF (Italy)

WORLD WIDE CLIC COLLABORATION

North-West. Univ. Illinois (USA)Polytech. University of Catalonia (Spain)RAL (England) SLAC (USA)Svedberg Laboratory (Sweden) Uppsala University (Sweden)

Ankara University (Turkey)Berlin Tech. Univ. (Germany) BINP (Russia)CERNCIEMAT (Spain)DAPNIA/Saclay (France)

JASRI (Japan) JINR (Russia) KEK (Japan) LAL/Orsay (France) LAPP/ESIA (France)LLBL/LBL (USA)

CLIC World wide collaboration

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DL

CLEX 2007-2009building in 2006/7

2004 2005

Present status of CTF3 (G.Geschonke)

Thermionic gun

CR

TL2 2007-2008

30 GHz production(PETS line)and test stand

Photo injector / lasertests from 2008

D FFD

D F D

D F D D F D

D F D

DF DF DF DF DF DF DF DF DF

D F D

F DF D

D FFFDD

D F DD F D

D F DD F D D F DD F D

D F DD F D

DF DF DF DF DF DF DF DF DF DFDF DF DF DF DF DF DF DF DF DF DF DF DF DF DF DF

D F DD F D

F DF DF DF D

Linac

Beam up to here

2007

Major milestones in 2007:Combiner Ring (CR) installedCLEX building finished, equipment installation started

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CERN LALSLAC

IAP

INFN-LNF CIEMATBINP LURE CERN

NWU LAPP Uppsala

RRCATTSL

CERN

CEA-DAPNIACERNLALUppsala

CERN

CIEMATUPC IFIC

CERN

CTF3 – Collaborations

CERN NWUPSI Uppsala

INFN-LNFCERN

INFN-LNFCERN

Work Package repartition

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Combiner Ring (84 m circumference)

Transfer line TL1 from Delay Loop

Transfer line TL2 to CLEX

Path length wiggler

RF deflectors

84 m circumference

Ejection septum

Injection area In 2007:Combiner Ring installation finished,Commissioning started

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Beam intensity and frequency multiplication by factor 4

(R.Corsini)

Beam currentbefore

Combiner Ring

Beam currentin

Combiner Ring

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Status end 2007:Building finished,Installation ongoing

existing building

D FFD

D F D

D F D D F D

D F D

DF DF DF DF DF DF DF DF DF

D F D

F DF D

D FFFDD

D F DD F D

D F DD F D D F DD F D

D F DD F D

DF DF DF DF DF DF DF DF DF DFDF DF DF DF DF DF DF DF DF DF DF DF DF DF DF DF

D F DD F D

F DF DF DF D

42.5 m

8 m

2m

D FFD

DF

F

D F DDUMPD F D

F

FD

ITB

1.85m

CALIFES Probe beam injector

LIL-ACSLIL-ACSLIL-ACSD F D

D F D

DFDUMP

0.75

1.4m

1

DUMP

22.4 mTBL

2.5m

Transport path

DUMP

DUMP 22 m

2.0m

DF DF DF DF DF DF DF DF

3.0m3.0m6 m

D F D

F DF D

16.5 mTBTS

16 m

TL2’

42.5 m42.5 m

8 m8 m

2m2m

D FFFDD

DF

FDD

FF

FF

D F DD F DDUMPD F DD F D

F

FD

F

FD

F

FD

ITB

1.85m1.85m

CALIFES Probe beam injector

LIL-ACSLIL-ACSLIL-ACSLIL-ACSLIL-ACSLIL-ACSD F DD F D

D F DD F D

DF DFDUMP

0.75

1.4m1.4m

11

DUMP

22.4 m22.4 mTBL

2.5m2.5m

Transport path

DUMP

DUMP 22 m22 m

2.0m2.0m

DF DF DF DF DF DF DF DFDF DF DF DF DF DF DF DF DF DF DF DF DF DF DF DF

3.0m3.0m3.0m3.0m6 m6 m

D F DD F D

F DF DF DF D

16.5 m16.5 mTBTS

16 m16 m

TL2’

CLEX (CLIC Experimental Area)

(building number, not year....)

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CLIC Chart

CLIC/CTF3 Collaboration BoardCERN Management

Extended CSCCLIC Advisory Committee

Conceptual Design Report Editorial Board

CLIC Design & Parameters CLIC Physics & Detectors CTF3 project

Cost

Technical Committee

2 Beam Module & Tunnel Integrat

Instrumentation

Alignment & Stabilisation

Civil engineering & Conv. Facilit.

Machine Protection system

RF structures

Design & Fabrication

Testing

30 GHz Test Stand

12 GHz Test Stand

Beam Physics

Physcics

Detectors

Commissioning & Operat.

Installation

CALIFE

Two Beam Test Stand

TBL

Photo-Injector

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Meetings next week

•CLIC Collaboration technical meeting: 21-23/01/08 http://indico.cern.ch/conferenceDisplay.py?confId=23022

ACE’s members welcome

•CLIC/CTF3 Collaboration Board: 24/01/08http://indico.cern.ch/conferenceDisplay.py?

confId=24273

report by Tor of ACE’s finding and recommendation

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Conclusion

•CLIC team fully committed to optimise a Multi-TeV Linear Collider based on CLIC technology and demonstrate its feasibility reported in a Conceptual Design Report by 2010

•3 TeV parameters following second iteration optimisation

•Possible strategy for low energy design based on (more) conservative parameters

•CTF3 on schedule to address the major key issues

•Strongly relying on SLAC and KEK for structure tests

•Efficient collaboration of 23 laboratories possibly extended to CLIC design (CLIC07 workshop)

•(Slowly) evolving towards Project Oriented organisation

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CLIC performances (FoM) and cost (relative) variation as a function of the accelerating gradient

• Performances increasing with lower accelerating gradient (mainly due to higher efficiency)• Flat cost variation in 100 to 130 MV/m with a minimum around 120 MV/m

Ecms = 3 TeV L(1%) = 2.0 1034 cm-2s-1

Previous PreviousNew New Optimum

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CLIC performances (FoM) and cost optimisationas function of RF frequency

Ecms = 3 TeV L(1%) = 2.0 1034 cm-2s-1

• Maximum Performance around 14 GHz • Flat cost variation in 10 to 16 GHz frequency range with a minimum around 14 GHz

New NewPrevious PreviousOptimumOptimum

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(Reserve Figure)•The same results for

the 3TeV parameters•Note that P/L=const

is more realistic

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Optimum Accelerating Gradient @ 500 GeV

Optimum gradient: 57 MV/m

Performance versus gradient for• Double length of the accelerating structure• Double length of the structure, nominal bunch spacing of 6 rf cycles and nominal pulse length• Double length of the structure, nominal bunch spacing of 6 rf cycles and double pulse length

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CLIC Layout at various energies

3 TeV StageLinac 1 Linac 2

Injector Complex

I.P.

3 km21 km 21 km3 km

48 km

Linac 1 Linac 2

Injector Complex

I.P.

2.75 km2.75 km7.0 km 7.0 km

19.5 km

1 TeV Stage

0.5 TeV StageLinac 1 Linac 2

Injector Complex

I.P.

3.5 km

2.5 km 2..5 km

3.5 km

12.0 km

Accel Grad = 57 MV/mLinac: 4*100/57=7 sectors = 6.125 kmTotal length = 17.5 km

Accel Grad = 57 MV/mLinac: 8*100/57=14 sectors = 12.25 kmTotal length = 30 km

j.p.delahaye clic @ ace 16-01-08 1 clic a dvisory c ommitte e (ace) introduction to the clic...

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