CLIC near CERN Tunnel implementations (laser straight) Central MDI & Interaction Region 1
Physics at LC from 250 GeV to 3000 GeV • Physics case for the Linear Collider: • Higgs physics (SM and non-SM) • Top • SUSY • Higgs strong interactions • New Z’ sector • Contact interactions • Extra dimensions • …. AOP (any other physics) … Specific challenges for CLIC studies: • Need to address Higgs-studies, including gains for measurements at higher energies • Reach for various “new physics” (list above) options; comparative studies with HiLumi LHC and proton-proton at higher energies (FCC). References: CLIC CDR and http://arxiv.org/pdf/he p-ex/0112004.pdf, see also talk S.Dawson 2
Drive beam time structure - initial Drive beam time structure - final 240 ns 240 ns 5.8 m s 140 m s train length - 24 24 sub-pulses 24 pulses – 101 A – 2.5 cm between bunches 4.2 A - 2.4 GeV – 60 cm between bunches
Possible CLIC stages studied Key features: • High gradient (energy/length) • Small beams (luminosity) • Repetition rates and bunch spacing (experimental conditions) 4
Key results of CDR studies Luminosity performance: Drive beam scheme: Main Linac gradient: - Damping ring like an ambitious light source, - Generation tested, used to accelerate - Ongoing test close to or on target (BDR no show stopper test beam above specifications, 10 -7 , 100 MV/m) - Alignment system principle demonstrated deceleration as expected - Uncertainty from beam loading being - Stabilisation system developed, benchmarked, - Improvements on operation, reliability, tested better system in pipeline losses, more deceleration studies - Simulations on or close to the target, plus underway verification studies in FACET and ATF on-going CLIC timing structure demanding: Implementation: - Detailed GEANT 4 simulations - Consistent three stage implementation - Studied using full reconstruction with background scenario defined - Make full use of timing and fine granularity to reconstruct the - Schedules, cost and power developed and physics objects with very high precision presented 5 - Shown to be fully compatible with high precision e+e- physics - Site and CE studies documented
4-5 year Preparation Phase Construction Phase 2013-18 Development Phase Critical issues for next phase: Design and Implementation studies: Finalise implementation parameters, Stage 1 construction of CLIC, in Develop a Project Plan for a staged • CDR status: not optimized except at 3 TeV and not adjusted for Higgs discovery, not implementation in agreement Drive Beam Facility and other system parallel with detector optimized cost, first power/energy estimates without time for reductions, limited verifications, site authorisation and with LHC findings; further construction. industrial costing, very limited reliability studies preparation for industrial technical developments with Preparation for implementation X-band developments: procurement. industry, performance studies for • of further stages. CDR status: Single elements demonstrated – limited by test-capacity accelerator parts and systems, as Prepare detailed Technical Proposals System-tests: well as for detectors. • for the detector-systems. CDR status: CTF3 results initial phase (as of early 2012), ATF and FACET very little, no convincing strategy for further system verification, programmes for use of Xband CTF3� – � Layout� techology for other applications in its infancy • CDR status concerning drive-beam FE: Nothing done beyond CTF3 DELAY� � LOOP� Technology developments: 4� A� – � 1.2� ms� COMBINER� • RING� 150� MeV� CDR status: alignment/stability partly covered, BBA assumed, wakefield mon. perf. assumed, no complete module DRIVE� BEAM� � 28� A� – � 140� ns� LINAC� 150� MeV� CLEX� 10� m� CLIC� Experimental� Area� Two-Beam� Test� Stand� (TBTS)� Test� Beam� Line� (TBL)� Commissioning 2018-19 Decisions 2024-25 Construction Start Ready for full construction On the basis of LHC data Becoming ready for data- and main tunnel excavation. taking as the LHC and Project Plans (for programme reaches CLIC and other potential completion. projects), take decisions about next project(s) at the Energy Frontier.
CLIC Collaboration 29 Countries – over 70 Institutes Accelerator collaboration Detector collaboration Accelerator + Detector collaboration
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