The CLIC Study and the DAPNIA participation

The CLIC Study and the DAPNIA participation • The world-wide scene about Linear Colliders • CERN Council Policy • CLIC complementary to ILC • Feasibility of the CLIC scheme • CTF 3, the facility to address the key issues • Short & Medium Term DAPNIA responsibility • Long Term DAPNIA perspectives • Conclusion J. P. Delahaye Journees Thematiques DAPNIA “Accelerateurs” (09 -01 -06) 1

World consensus about a Linear Collider as the next HEP facility after LHC • 2001: ICFA recommendation of a world-wide collaboration to construct a high luminosity e+/e- Linear Collider with an energy range up to at least 400 Ge. V/c • 2003: ILC-Technical Review Committee to assess the technical status of the various designs of Linear Colliders • 2004: International Technology Recommendation Panel down-selecting the Super-conducting technology for an International Linear Collider (ILC) Linear Collider in the Te. V energy range • 2004: CERN council support for R&D addressing the feasibility of the CLIC technology to possibly extend Linear Colliders into the Multi-Te. V energy range. J. P. Delahaye Journees Thematiques DAPNIA “Accelerateurs” (09 -01 -06) 2

CLIC @ SPC & Council • SPC: March 2004: • Summary of CLIC Physics case and proposed accelerated R&D programme (CERN/SPC/841 -CERN/2552) with recommendation of a world-wide multi-lateral collaboration of volunteer institutes for tests of feasibility of the CLIC concept for Multi -Te. V Linear Collider to arrive before 2010 at a firm conclusion on its possible use • SPC Chairman’s conclusion: • The SPC supported the many good arguments on the rich physics potential of CLIC. The range of possibilities would be clarified by the results of LHC • The SPC re-expressed its support for the acceleration of the tests of the feasibility of the CLIC concept on the proposed time scale • Council’s summary of conclusions: CERN/2554 • In line with the conclusion of the SPC, the Council expressed strong support for accelerating the R&D on CLIC as proposed by the management in document CERN/SPC/841 -CERN/2552 • SPC: June 05 & Thematiques DAPNIA “Accelerateurs” (09 -01 -06) and CTF 3 visit Sept 05: Progress follow-up Journees 3 J. P. Delahaye

The ILC Plan and Schedule (B. Barish @ CERN/SPC 050913 and ICFA workshop 051005) CLIC Global Design Effort Baseline configuration Reference Design Project LHC Physics Technical Design ILC R&D Program Expression of Interest to Host International Mgmt J. P. Delahaye 2005 Journees 2007 Thematiques DAPNIA “Accelerateurs” (09 -01 -06) 2006 2008 2009 2010 4

Tentative long-term CLIC scenario Shortest and technically limited schedule Technology evaluation and Physics assessment based on LHC results for a possible decision on Linear Collider funding with staged construction starting with the lowest energy required by Physics J. P. Delahaye Journees Thematiques DAPNIA “Accelerateurs” (09 -01 -06) 5

CERN participation to ILC • ILC- Mo. U: Support to GDE • ILC project management tools • ILC@CERN Site Specific Cost Study • Major partner in specific studies: • Civil engineering, Cryogenics& Cryostats, Beam dynamics • R&D on generic key issues independent of technology: • Participation in EUROTe. V design study & CARE project • R&D on Beam diagn. , Beam Delivery System (BDS), Beam dyn… • Tests with beam in CTF 3 Test facility: • Participation to R&D on generation of Low Emittances @ ATF 1/KEK and of small spot sizes @ATF 2/KEK J. P. Delahaye Journees Thematiques DAPNIA “Accelerateurs” (09 -01 -06) 6

THE COMPACT LINEAR COLLIDER (CLIC) STUDY J. P. Delahaye for The Compact LInear Collider Study Team The CLIC study is a site independent feasibility study aiming at the development of a realistic technology at an affordable cost for an e± Linear Collider in the post-LHC era for Physics in the multi-Te. V center of mass colliding beam energy range. CLIC = Complementary to ILC = C ILC http: //clic-study. web. cern. ch/CLIC-Study/ CERN 2000 -008, CERN 2003 -007, CERN 2004 -005 J. P. Delahaye Journees Thematiques DAPNIA “Accelerateurs” (09 -01 -06) 7

World-wide CLIC collaboration l l l l l Ankhara University (Turkey): CTF 3 beam studies & operation • Ankara University (Turkey): CTF 3 beam studies & operation BERLIN Technical University (Germany): Structure simulations Gdfid. L • Berlin Tech. University (Germany): Structure simulations Gdfid. L BINP (Russia): CTF 3 magnets development & construction, DR wiggler & beam dynamics • BINP (Russia): CTF 3 magnets & construction CIEMAT (Spain): CTF 3 kickers, septa, correctors devel. , CTF 3 construction/commissioning • CERN: Study coordination, structures & power supplies CERN (Switzerland): Study coord. , Structures correctors, power extraction structures • CIEMAT (Spain): CTF 3 septa and kickers, devel. , CTF 3 const. &com. DAPNIA (France): CTF 3 probe beam injector acceleration & meas. • DAPNIA/Saclay (France): CTF 3 generation, Finnish Industry (Finland): Sponsorship of RF photo injector (FP 6 JRA)engineer • EU Financing of a mechanical INFN /Industry (Finland): • Finnish LNF (Italy): CTF 3 delay loop, transfer engineer & RF deflectors Sponsorship of mechanical lines JINR & LNF (Italy): • INFN / IAP (Russia): Surface heating tests of lines & GHz structures CTF 3 delay loop, transfer 30 RF deflectors, ring vacuum chambers KEK (Japan): Low emittance beams in ATF tests of 30 GHz structures • JINR & IAP (Russia): Surface heating LALKEK (Japan): (France): Electron guns and pre-buncher in ATF • Low emittance beams cavities for CTF 3 LAPP/ESIA (France): Stabilization. Electron guns and pre-buncher cavities for CTF 3 studies • LAL/Orsay (France): LLBL/LBL (France): (USA): Laser-wire studies • LAPP/ESIA Stabilization studies, CTF 3 beam position monitors North Western University (Illinois): Beam loss studies & CTF 3 equipment • LLBL/LBL (USA): Laser-wire studies RAL (England): Lasers for CTF 3 and CLICBeam diagnostics & CTF 3 equipment photo-injectors • North-West. Univ. Illinois (USA): Various CTF 3 SLAC (England): High Gradient Structurefor CTF 3 and CLIC photo-injectors drive beam inj. (USA): design&tests, CTF 3 • RAL Lasers UPPSALA University (Sweden): Beam Gradient Structure testing, structure for CTF 3 design monitoring systems design, CTF 3 injector • SLAC (USA): High • Uppsala University (Sweden): J. P. Delahaye Beam monitoring systems for CTF 3 Journees Thematiques DAPNIA “Accelerateurs” (09 -01 -06) 8

33. 2 km CLIC technology for Multi-Te. V Linear Colliders • High acceleration gradient (150 MV/m) • “Compact” collider-overall length 33 km • Normal conducting accelerating structures • High acceleration frequency (30 GHz) • Two-Beam Acceleration Scheme 5. 2 km Overall layout for a center of mass energy of 3 Te. V/c J. P. Delahaye • • • RF power generation at high frequency Cost-effective & efficient (~ 10% overall) Simple tunnel, no active elements “modular” design, can be built in stages Easily expendable in energy Journees Thematiques DAPNIA “Accelerateurs” (09 -01 -06) 9

CLIC 3 Te. V layout 352 klystrons 40 MW, 94 ms drive beam accelerator 2. 37 Ge. V, 937 MHz delay 21 m CR 1 84 m combiner CR 2 rings 334 m decelerator, 21 sectors of 669 m BDS 2. 6 km BC 2 e- main linac , 30 GHz, 150 MV/m, 14 km IP 1 & IP 2 e+ main linac BC 2 33. 6 km train combination DB 16 cm→ 8 cm booster linac, 9 Ge. V, 3. 75 GHz e- injector 2. 4 Ge. V J. P. Delahaye BC 1 e- DR 360 m e+ injector, 2. 4 Ge. V Journees Thematiques DAPNIA “Accelerateurs” (09 -01 -06) 10

Performances of Lepton Colliders J. P. Delahaye Journees Thematiques DAPNIA “Accelerateurs” (09 -01 -06) 11

CLIC construction in phases: Energy upgrade Linac 1 I. P. Linac 2 0. 42 Te. V Stage Injector Complex 1. 9 km 1. 5 km 6. 8 km 1 Te. V Stage Linac 1 I. P. Linac 2 Injector Complex 5. 0 km 1. 5 km 5. 0 km 13. 0 km 3 Te. V Stage Linac 1 I. P. Linac 2 Injector Complex 14. 0 km 2. 6 km 14. 0 km 33. 2 km J. P. Delahaye Journees Thematiques DAPNIA “Accelerateurs” (09 -01 -06) 12

Strategy to address key issues • Key issues common to all Linear Collider studies independently of the chosen technology in close collaboration with: • International Linear Collider (ILC) study • The Accelerator Test Facility (ATF@KEK) • European Laboratories in the frame of the Coordinated Accelerator Research in Europe (CARE) and of a “Design Study” (EUROTe. V) funded by EU Framework Programme (FP 6) • Key issues specific to CLIC technology: • Focus of the CLIC study • All R 1 (feasibility) and R 2 (design finalisation) key issues addressed in test facilities: CTF@CERN except the Multi-Beam Klystron (MBK) which does not require R&D but development by industry (feasibility study already done) J. P. Delahaye Journees Thematiques DAPNIA “Accelerateurs” (09 -01 -06) 13

CLIC technology-related key issues (ILC-TRC 2003 Covered by CTF 3 R 1: Feasibility • R 1. 1: Test of damped accelerating structure at design gradient and pulse length • R 1. 2: Validation of drive beam generation scheme with fully loaded linac operation • R 1. 3: Design and test of damped ON/OFF power extraction structure R 2: Design finalisation • R 2. 1: Developments of structures with hard-breaking materials. Industrial (W, Mo…) • R 2. 2: Validation of stability and losses of drive beam decelerator; development Design of machine protection system • R 2. 3: Test of relevant linac sub-unit with beam • R 2. 4: Validation of drive beam 40 MW, 937 MHz Multi-Beam Klystron with long RF pulse • R 2. 5: Effects of coherent synchrotron radiation in bunch compressors Covered by EUROTe. V J. P. Delahaye Journees Thematiques DAPNIA “Accelerateurs” (09 -01 -06) 14 • R 2. 6: Design of an extraction line for 3 Te. V c. m.

Study of generic key issues common to ILC and CLIC 27 MEuros (9 MEuros by EU) = CLIC participation J. P. Delahaye Journees Thematiques DAPNIA “Accelerateurs” (09 -01 -06) 15

CLIC Test Facility (CTF 3) 2005 2004 INFN 30 GHz stand laser room CLEX 2007 -2009 TL 2: 2007 Combiner Ring: 2006 2004 - 2009 Key issues From 2005: Accelerating structures (bi-metallic) Development& Tests (R 2. 1) 2007 - 2008: Drive beam generation scheme (R 1. 2) 2008 - 2009: Damped accelerating structure with nominal parameters (R 1. 1) ON/OFF Power Extraction Structure (R 1. 3) Drive beam stability bench marking (R 2. 2) CLIC sub-unit (R 2. 3) J. P. Delahaye Journees Thematiques DAPNIA “Accelerateurs” (09 -01 -06) 16

CLIC experimental area (CLEX) Test beam line (TBL) to study RF power production (5 TW at 30 GHz) and drive beam decelerator dynamics, stability & losses - Two Beam Test Stand to study probe beam acceleration with high fields at high frequency and the feasibility of Two Beam modules - 40 m DUMP P DUM MP D F D F D F D 3 m DFD 13 m DUMP F FD DFD D F D P 30 GHz UM Teststand. D Instrumentation Testbeam F D D LIL-ACS F D F F MP D F D LIL-ACS DF FD 15 m Probe beam injector DFD 2 m 8 m 6 m DU DUMP DU TBL F DFD 1 m wide passage all around Layout for CLEX floor space J. P. Delahaye Journees Thematiques DAPNIA “Accelerateurs” (09 -01 -06) 17

Work packages WP 2. 1 30 GHz High Gradient Test Stand Test Beam Line WP 6 WP 7 J. P. Delahaye Structures Relevant linac subunit WP 5 WP 1 WP 4 Probe Beam Two-beam test stand WP 2. 2 WP 8 CTF 3 Operation Combiner Ring and Transfer Lines CLEX Building WP 3 WP 9 30 GHz power source Journees Thematiques DAPNIA “Accelerateurs” (09 -01 -06) 18

CTF 3 Collaboration • World-wide Institutes have been invited to contribute to this programme by: ü taking full responsibility for part, complete of one or several work-packages ü providing voluntary contributions “a la carte” in cash, in kind and/or in man-power • Multilateral collaboration network of volunteer institutes (from which CERN is one of them) participating jointly to the technical coordination and management of the project. CTF 3 collaboration meeting held at CERN on 30/11/05 Mo. U being signed by 14 Institutes from 9 Countries J. P. Delahaye Journees Thematiques DAPNIA “Accelerateurs” (09 -01 -06) 19

CTF 3 collaboration (30/11/05) J. P. Delahaye Journees Thematiques DAPNIA “Accelerateurs” (09 -01 -06) 20

CTF 3 Injector&Linac installation (2004) 7 A Thermionic Gun (LAL-SLAC) Bunchers(LAL)&Solenoids(SLACstudy) Novel RF power compression with Barrel Open Cavity (BOC) Bunch length adjustment with magnetic chicane J. P. Delahaye Accelerating structure with full beam loading Journees Thematiques DAPNIA “Accelerateurs” (09 -01 -06) 21

Installation and commissioning with beam of the Delay Loop (2005) Full responsibility of Injection area with 1. 5 GHz RF deflector and septa INFN Frascati 1. Dec. 2004 J. P. Delahaye Journees Thematiques DAPNIA “Accelerateurs” (09 -01 -06) 22

30 GHz power production in CTF 3 for tests in CTF 2 17 m waveguide with 5 bends but low-loss (85% transmission) (Russian collaboration) vacuum tanks containing Power Extraction Transfer Structure Expected from input current RF power in CTF 2 power out – rectangular WR 34 to circular (overmoded) H 01 Expected from output current J. P. Delahayeresult !! high power load Journees Thematiques DAPNIA “Accelerateurs” (09 -01 -06) 23

30 GHz conditioning of CLIC Accelerating Structure Accelerating structure under test: Circular 2π/3, 3. 5 mm , 55 MW for 150 MV/m: Mo iris Well on the way to CLIC parameters 150 MV/m during 70 ns J. P. Delahaye incident RF pulse energy [m. J] Accelerating filed in 1. cell RF conditioning still progressing Journees Thematiques DAPNIA “Accelerateurs” (09 -01 -06) Pulse length [ns] 24

CTF 3 project & schedule J. P. Delahaye Journees Thematiques DAPNIA “Accelerateurs” (09 -01 -06) 25

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CLIC main beam injector complex Polarized or unpolarized electrons / unpolarized positrons J. P. Delahaye Journees Thematiques DAPNIA “Accelerateurs” (09 -01 -06) 38

Conclusion • E+/E- Linear Collider next facility at High Energy Frontier after LHC • ILC and CLIC complementary technologies • DAPNIA participation to both ILC and CLIC essential for DAPNIA and warmly appreciated by LC community • DAPNIA responsibility of CTF 3 Probe Beam in the frame of a world-wide multi-lateral collaboration: • Full responsibility from design, construction, installation and commissioning • Challenging project of high intensity & high quality beam generation and measurement • Excellent opportunity to preserve and develop DAPNIA expertise on performing beam generation, acceleration, RF gymnastics, and measurements • Medium and Long Term perspectives on the overall design and responsibility of the whole injector complexes of the main and drive beams of possible future High Energy Linear Colliders J. P. Delahaye Journees Thematiques DAPNIA “Accelerateurs” (09 -01 -06) 39

CTF 3 collaboration (30/11/05) J. P. Delahaye Journees Thematiques DAPNIA “Accelerateurs” (09 -01 -06) 40