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GDE Report to ILCSC

This report outlines the formation and goals of the Global Design Effort (GDE) for the International Linear Collider (ILC). It discusses the mission, staffing, and design approach of the GDE, as well as its coordination with industry and the worldwide R&D efforts. The report also highlights the importance of the GDE in producing a detailed design for the ILC, including performance assessments, cost analysis, and detector concepts.

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GDE Report to ILCSC

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  1. GDE Report to ILCSC Barry Barish Snowmass, CO 23-Aug-05

  2. Outline • Status of GDE Formation • Defining the Mission and Goals • Forming the GDE • Forming the Baseline • Report on Snowmass • The GDE and Industry • Linear Collider Accelerator School ILCSC Meeting - Snowmass

  3. What’s are job? • The Mission of the GDE • Produce a design for the ILC that includes a detailed design concept, performance assessments, reliable international costing, an industrialization plan , siting analysis, as well as detector concepts and scope. • Coordinate worldwide prioritized proposal driven R & D efforts (to demonstrate and improve the performance, reduce the costs, attain the required reliability, etc.) ILCSC Meeting - Snowmass

  4. GDE – Staffing • Staff the GDE • Administrative, Communications, Web staff • Regional Directors (one per region) • Accelerator Experts (covering all technical areas) • Senior Costing Engineer (one per region) • Civil/Facilities Engineer (one per region) • Detectors (WWS chairs) • Fill in missing skills (later) • Total staff size about 20 FTE (2005-2006) about 40 heads. • The internal GDE organization and tasks will be organized internationally, not regionally ILCSC Meeting - Snowmass

  5. Chris Adolphsen, SLAC Jean-Luc Baldy, CERN Philip Bambade, LAL, Orsay Barry Barish, Caltech Wilhelm Bialowons, DESY Grahame Blair, Royal Holloway Jim Brau, University of Oregon Karsten Buesser, DESY Elizabeth Clements, Fermilab Michael Danilov, ITEP Jean-Pierre Delahaye, CERN, Gerald Dugan, Cornell University Atsushi Enomoto, KEK Brian Foster, Oxford University Warren Funk, JLAB Jie Gao, IHEP Terry Garvey, LAL-IN2P3 Hitoshi Hayano, KEK Tom Himel, SLAC Bob Kephart, Fermilab Eun San Kim, Pohang Acc Lab Hyoung Suk Kim, Kyungpook Nat’l Univ Shane Koscielniak, TRIUMF Vic Kuchler, Fermilab Lutz Lilje, DESY Tom Markiewicz, SLAC David Miller, Univ College of London Shekhar Mishra, Fermilab Youhei Morita, KEK Olivier Napoly, CEA-Saclay Hasan Padamsee, Cornell University Carlo Pagani, DESY Nan Phinney, SLAC Dieter Proch, DESY Pantaleo Raimondi, INFN Tor Raubenheimer, SLAC Francois Richard, LAL-IN2P3 Perrine Royole-Degieux, GDE/LAL Kenji Saito, KEK Daniel Schulte, CERN Tetsuo Shidara, KEK Sasha Skrinsky, Budker Institute Fumihiko Takasaki, KEK Laurent Jean Tavian, CERN Nobu Toge, KEK Nick Walker, DESY Andy Wolski, LBL Hitoshi Yamamoto, Tohoku Univ Kaoru Yokoya, KEK 49 members GDE Members ILCSC Meeting - Snowmass

  6. ILCCommunications • Launch New ILC Website www.linearcollider.org • thanks to Norm Graf for url • “One Stop Shopping” • electronic document management system (EDMS), news, calendar of events, education and communication, • Designer • Xeno Media (Kevin Munday) ILCSC Meeting - Snowmass

  7. ILCSC Meeting - Snowmass

  8. ILC Newsline Subscribe at http://www.linearcollider.org ILCSC Meeting - Snowmass

  9. 2005 2006 2007 2008 2009 2010 Global Design Effort Project LHC Physics Baseline configuration Reference Design What’s our schedule? Technical Design ILC R&D Program Bids to Host; Site Selection; International Mgmt

  10. GDE – Near Term Plan • Schedule • Begin - define Configuration (Snowmass Aug 05) • Baseline Configuration Document (end of 2005) ----------------------------------------------------------------------- • Baseline under Configuration Control (Jan 06) • Develop Reference Design (end of 2006) • Coordinate the supporting R&D program • Three volumes -- 1) Reference Design Report; 2) Shorter glossy version for non-experts and policy makers ; 3) Detector Concept Report ILCSC Meeting - Snowmass

  11. What is our design approach? • Create forward looking BCD, consistent with doing reference design and costing next year • Regarding the parameter space, I think it important to maintain a large operating space at this point in the project.  The four places that the parameter range pushed are the number of bunches stored in the damping ring, the minimum bunch length, the angular divergences, and the beamstrahlung and extraction line system.  In some cases, it may be possible to consider schemes where increases to the parameter range are add-ons - for example, it may be possible that a second bunch compressor is an inexpensive add-on and a could be installed after initial operation, however there are also cases where the parameter changes would imply much larger and invasive modifications: for example, the larger number of bunches or increased bandwidth in the extraction line. (Tor) ILCSC Meeting - Snowmass

  12. Parametric Approach • Parametric approach to design • machine parameters : a space to optimize the machine • Trial parameter space, being evaluated by subsystems • machine design : incorporate change without redesign; incorporates value engineering, trade studies at each step to minimize costs ILCSC Meeting - Snowmass

  13. Design Approach • Create a baseline configuration for the machine • Document a concept for ILC machine with a complete layout, parameters etc. defined by the end of 2005 • Make forward looking choices, consistent with attaining performance goals, and understood well enough to do a conceptual design and reliable costing by end of 2006. • Technical and cost considerations will be an integral part in making these choices. • Baseline will be put under “configuration control,” with a defined process for changes to the baseline. • A reference design will be carried out in 2006. I am proposing we use a “parametric” design and costing approach. • Technical performance and physics performance will be evaluated for the reference design ILCSC Meeting - Snowmass

  14. Approach to ILC R&D Program • Proposal-driven R&D in support of the baseline design. • Technical developments, demonstration experiments, industrialization, etc. • Proposal-driven R&D in support of alternatives to the baseline • Proposals for potential improvements to the baseline, resources required, time scale, etc. • Develop a prioritized DETECTOR R&D program aimed at technical developments needed to reach combined design performance goals ILCSC Meeting - Snowmass

  15. How do we do our work? • Short term organization • Need simple organization – many global questions • Good tools (video conferencing, EDMS, etc) • Tasks - Internationally organized • Organize Snowmass second week and products to enable and focus fall BCD program (Snowmass  Frascati) • General Meetings • Snowmass (Aug 05) first meetings • Frascati (Dec 7-10, 2005) (in conjunction with TESLA collaboration meeting) • Bangalore, India (March 2006) (in conjunction with LCWS 2006) • Topical Meetings ?? (Simplified organization will minimize meetings) • Our process and meetings will be open! ILCSC Meeting - Snowmass

  16. Parameters for the ILC • Ecm adjustable from 200 – 500 GeV • Luminosity ∫Ldt = 500 fb-1 in 4 years • Ability to scan between 200 and 500 GeV • Energy stability and precision below 0.1% • Electron polarization of at least 80% • The machine must be upgradeable to 1 TeV ILCSC Meeting - Snowmass

  17. Higgs Coupling and Extra Dimensions • ILC precisely measures Higgs interaction strength with standard model particles. • Straight blue line gives the standard model predictions. • Range of predictions in models with extra dimensions -- yellow band, (at most 30% below the Standard Model • The models predict that the effect on each particle would be exactly the same size. • The red error bars indicate the level of precision attainable at the ILC for each particle • Sufficient to discover extra dimensional physics. ILCSC Meeting - Snowmass

  18. Report from Snowmass? ILCSC Meeting - Snowmass

  19. Some Snowmass Highlights ILCSC Meeting - Snowmass

  20. Starting Point for the GDE Superconducting RF Main Linac ILCSC Meeting - Snowmass

  21. ILC Workshop Organization 2nd Week: BCD Recommendations - Focus Groups ILCSC Meeting - Snowmass

  22. Design Choices for Baseline • Design Alternatives • Gradient / Length (30MV/m?, 35MV/m? Higher?) • Tunnel (single? or double?) • Positron Souce (undulator? conventional?) • Damping ring (dogbone? small ring?) • Crossing angle (head-on, small angle, large angle) • Define detailed configuration • RF layout • Lattice layout • Beam delivery system layout • Klystron / modulators • Cryomodule design • Evolve these choices through “change control” process ILCSC Meeting - Snowmass

  23. Defining the Parameter Space ILCSC Meeting - Snowmass

  24. Cost Drivers Civil SCRF Linac ILCSC Meeting - Snowmass

  25. How Costs Scale with Gradient? 35MV/m is close to optimum Japanese are still pushing for 40-45MV/m 30 MV/m would give safety margin Relative Cost Gradient MV/m C. Adolphsen (SLAC) ILCSC Meeting - Snowmass

  26. TESLA Cavity ~1meter 9-cell 1.3GHz Niobium Cavity ILCSC Meeting - Snowmass

  27. Gradient Results from KEK-DESY collaboration must reduce spread (need more statistics) single-cell measurements (in nine-cell cavities) ILCSC Meeting - Snowmass

  28. Cavity Fabrication ILCSC Meeting - Snowmass

  29. Improved Fabrication ILCSC Meeting - Snowmass

  30. Improved ProcessingElectropolishing ILCSC Meeting - Snowmass

  31. Improved Cavity Shapes ILCSC Meeting - Snowmass

  32. Baseline Gradient ILCSC Meeting - Snowmass

  33. Baseline Gradients ILCSC Meeting - Snowmass

  34. Large Grain Single Crystal Nb Material ILCSC Meeting - Snowmass

  35. Conventional Facilities and Siting Milestone One: Snowmass 2005 Conference Successfully Initiate the Global Civil and Siting Effort Complete Comparative Site Assessment Matrix Format Milestone Two: December, 2005 Identify Regional Sample Sites for Inclusion into the Baseline Configuration Document Milestone Three: December, 2006 Complete Conventional Facilities and Siting Portion of the Reference Design Document 8.19.05 V. Kuchler 2 of 8 ILCSC Meeting - Snowmass

  36. Conventional Facilities and Siting Outstanding Issues with Direct Impact on CFS Progress that will Require Further Discussion and Resolution with Other Working Groups 1 Tunnel vs 2 Tunnel Laser Straight vs Curved or Segmented Shape and Length of Damping Rings Shape and Configuration of Sources 1 vs 2 Interaction Regions 8.19.05 V. Kuchler 6 of 8 ILCSC Meeting - Snowmass

  37. ILC Siting and Conventional Facilities • The design is intimately tied to the features of the site • 1 tunnels or 2 tunnels? • Deep or shallow? • Laser straight linac or follow earth’s curvature in segments? • GDE ILC Design will be done to samples sites in the three regions • North American sample site will be near Fermilab • Japan and Europe are to determine sample sites by the end of 2005 ILCSC Meeting - Snowmass

  38. 1 vs 2 Tunnels • Tunnel must contain • Linac Cryomodule • RF system • Damping Ring Lines • Save maybe $0.5B • Issues • Maintenance • Safety • Duty Cycle ILCSC Meeting - Snowmass

  39. Possible Tunnel Configurations • One tunnel of two, with variants ?? ILCSC Meeting - Snowmass

  40. ILC Civil Program Civil engineers from all three regions working to develop methods of analyzing the siting issues and comparing sites. The current effort is not intended to select a potential site, but rather to understand from the beginning how the features of sites will effect the design, performance and cost ILCSC Meeting - Snowmass

  41. Sample Site Study ILCSC Meeting - Snowmass

  42. Example of Discussions ILCSC Meeting - Snowmass

  43. But, do you same $$ ? Disagree ---- Needs a more careful analysis ILCSC Meeting - Snowmass

  44. Toshiba Thales CPI Baseline Klystrons Available today: 10 MW Multi-Beam Klystrons (MBKs) that operate at up to 10 Hz ILCSC Meeting - Snowmass

  45. Improved Klystron ? 5 MW Inductive Output Tube (IOT) 10 MW Sheet Beam Klystron (SBK) Low Voltage 10 MW MBK Parameters similar to 10 MW MBK Voltage e.g. 65 kV Current 238A More beams Perhaps use a Direct Switch Modulator Klystron Output IOT KEK SLAC CPI Drive ILCSC Meeting - Snowmass

  46. RF Distribution BASELINE DESIGN Similar to TDR and XFEL scheme. POSSIBLE IMPROVEMENT? With two-level power division and proper phase lengths, expensive circulators can be eliminated. Reflections from pairs of cavities are directed to loads. Also, fewer types of hybrid couplers are needed in this scheme. There is a small increased risk to klystrons. (Total reflection from a pair of cavities sends < 0.7% of klystron power back to the klystron.) ILCSC Meeting - Snowmass

  47. ILC Beam Instrumentation Requirements ~ 60% complete ILCSC Meeting - Snowmass

  48. Beamsize Growth Study (cumulative after feedback) + Kicker, current, energy jitter, BPM resol. + 5 Hz ground. + Component jitter + Undulator 30 min ground. ILCSC Meeting - Snowmass

  49. Availability Studies1 vs 2 tunnels ILCSC Meeting - Snowmass

  50. Improving Mean Time Between Failures ILCSC Meeting - Snowmass

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