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Future Linear Colliders

Future Linear Colliders . Brian Foster (GDE - Hamburg/DESY/Oxford) Birmingham Town Meeting. e + e - colliders. ILC 0.5 TeV – 30 km ILC 1 TeV ~ 45 km*. CLIC 0.5 TeV: 13 km CLIC 1.5 TeV: 27 km. 2. Parameters. ILC SCRF progress continues. TDR Goal. 2010 Milestone.

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Future Linear Colliders

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  1. Future Linear Colliders Brian Foster (GDE - Hamburg/DESY/Oxford) Birmingham Town Meeting Linear Colliders

  2. e+e- colliders ILC 0.5 TeV – 30 km ILC 1 TeV ~ 45 km* CLIC 0.5 TeV: 13 km CLIC 1.5 TeV: 27 km 2 Linear Colliders

  3. Parameters Linear Colliders

  4. ILC SCRF progress continues TDR Goal 2010 Milestone Linear Colliders

  5. ILC SCRF progress continues Linear Colliders

  6. ILC SCRF progress continues Linear Colliders

  7. ILC SCRF proof of principleFLASH @ DESY Linear Colliders

  8. Towards the TDR in 2012 RDR SB2009 • Single Tunnel for main linac • Move positron source to end of linac • Reduce number of bunches by factor of two (lower power) • Reduce size of damping rings (3.2km) • Integrate central region • Single-stage bunch compressor Linear Colliders

  9. What about LHC results? S. Dawson ALCPG11 Linear Colliders

  10. Increasing SCRF Gradient R.L. Geng Understanding in gradient limits and inventing breakthrough solutions are responsible for gradient progresses. This has been a tradition in SRF community and rapid gradient progress continues. Up to 60 MV/m gradient has been demonstrated in 1-cell 1300 MHz Nb cavity. 45-50 MV/m gradient demonstration in 9-cell cavity is foreseen in next 5 years. Linear Colliders

  11. CLIC Linear Colliders

  12. Parameters Linear Colliders

  13. CTF3 @ CERN Demonstrate Drive Beam generation(fully loaded acceleration, beam intensity and bunch frequency multiplication x8) Demonstrate RF Power Production and test Power Structures Demonstrate Two Beam Acceleration and test Accelerating Structures PULSE COMPRESSION FREQUENCY MULTIPLICATION magnetic chicane 150 MeV e-linac 30 GHz test stand 3.5 A - 1.4 ms Delay Loop Combiner Ring CLEX (CLIC Experimental Area) TWO BEAM TEST STAND PROBE BEAM Test Beam Line 28 A - 140 ns Photo injector tests, laser Infrastructure from LEP total length about 140 m Linear Colliders

  14. RF Structure Breakdown Linear Colliders

  15. Tentative schedule new projects Linear Colliders

  16. ILC Experiments SiD ILD Linear Colliders

  17. UK activities • There is no explicit STFC funding for UK participation in ILC. • For CLIC, we negotiated contracts from CERN for key areas • of accelerator R&D for 3 years. This support has now started. • Since we were careful to work on generic technologies, almost all of this CLIC work is also applicable to ILC, and vice-versa. • Despite lack of STFC support, many UK physicists continue to • play leadership roles in both ILC & CLIC and in both accelerator • and detectors. • LCUK Collaboration continues. Had annual meeting last • month in Oxford – attended by around 25 people. New • spokesman election to replace BF under way. • Despite lack of resources, amazing amount of excellent work • continues to be done. Linear Colliders

  18. LCUK Agenda • 09.00 Beam delivery and collimation studies conclusions: James Jones • 09.25 CLIC quadrupoles: Ben Shepherd • 09.50 CLIC cavity studies: Roger Jones • 10.15 LC intra-train feedback, and CLIC drive beam phase feed-forward system: Glenn Christian • 10.40coffee • 11.00 Longitudinal profile measurements: Allan Gillespie • 11.25 Laserwire: Grahame Blair • 11.50 Crab cavities: Praveen Ambattu • 12.15 BPMs: Alexey Lyapin • 12.40 discussion  • 13.00 lunch • 14:00 LC status - Brian Foster • 15:00 Status of SiD & CLIC detector aspects – Marcel Stanitzki (remotely) • 15:15 Spider – Tony Price • 15:35 Calice Beam tests: David Ward • 15:55 Tea • 16:15 Low-Mass - Joel Goldstein  • 16:35 Status of ILD & CLIC detector aspects - Mark Thomson • 16:50 General discussion, including Collaboration Council meeting.

  19. Summary and Outlook • ILC – technically mature – but costly. }CLOSE Collaboration • CLIC – much R&D still required – cost? • There were signs that Japan was moving towards bidding to • build ILC – but then earthquake. • Last month, governor of Tohoku province said: “To recover from the situation • we face, we should have a long-term vision for people in Tohoku to prosper, • taking pride in where we live.” [It is important for people to recover the everyday • life they had before earthquake] “But I don’t think that is enough. The ILC can • provide hope and pride to the people in Tohoku. We can also expect significant • impact from the ILC on the economy and employment in the area” • 2012-13 will be watershed in our subject. I have no idea what • will happen – there may be an overwhelming momentum to build • a LC – or there may be a bewildering uncertainty. • It will be one of the most interesting times in my scientific career. Linear Colliders

  20. Final Word • I have been more worried about the future of pp in the UK than • now. • I have never been more worried about the future of world • particle physics. • There are two scenarios in which pp can flourish: • We develop a world organisation, based on CERN, which the • major players in the other regions join; • Each of the 3 major regions has a world-class facility on its • soil. • The third scenario, which we are drifting towards, is a single • world-class facility based at CERN and no world organisation. • This is not a sustainable scenario. Linear Colliders

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