1. GDE Report to FALC Status and Plans Barry Barish FALC Fermilab 4-Nov-05 ILC Polarized Electron Source

2. 5-Nov-05FALC - Fermilab2 The ITRP Recommendation We recommend that the linear collider be based on superconducting rf technology –This recommendation is made with the understanding that we are recommending a technology, not a design. We expect the final design to be developed by a team drawn from the combined warm and cold linear collider communities, taking full advantage of the experience and expertise of both (from the Executive Summary).

3. 5-Nov-05FALC - Fermilab3 SCRF Technology Recommendation The recommendation of ITRP was presented to ILCSC & ICFA on August 19, 2004 in a joint meeting in Beijing. ICFA unanimously endorsed the ITRP’s recommendation on August 20, 2004

4. 5-Nov-05FALC - Fermilab4 The Community Self-Organized Nov 13-15, 2004

5. 5-Nov-05FALC - Fermilab5 Self Organization following Technology Decision 1 st ILC workshop at KEK November 2005 ILCSC forms 5 technical WG + 1 communications and outreach WG WG1 Parameters & General Layout WG2 Main Linac WG3 Injectors WG4 Beam Delivery & MDI WG5 High gradient SCRF WG6 Communications

6. 5-Nov-05FALC - Fermilab6 Evolution by Snowmass WG1 Parms & layout WG2 Linac WG3 Injectors WG4 Beam Delivery WG5 High Grad. SCRF WG6 Communications WG1 LET beam dynamics WG2 Main Linac WG3a Sources WG3b Damping Rings WG4 Beam Delivery WG5 SCRF Cavity Package WG6 Communications Birth of the GDE and Preparation for Snowmass

7. 5-Nov-05FALC - Fermilab7 Global Design Effort –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.)

8. 5-Nov-05FALC - Fermilab8 GDE Members 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 Americas 16 Europe 21 Asia 12

9. 5-Nov-05FALC - Fermilab9 Starting Point for the GDE Superconducting RF Main Linac

10. 5-Nov-05FALC - Fermilab10 Parameters for the ILC E cm 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

11. 5-Nov-05FALC - Fermilab11 GDE Structure and Organization Executive Committee for Baseline Configuration –GDE Director Barish –Regional Directors Dugan – Americas Foster – Europe Takasaki – Asia –Accelerator Leaders Yokoya - Asia Raubenheimer - Americas Walker - Europe Responsible for decisions and documentation for the Baseline Configuration Document (BCD)

12. 5-Nov-05FALC - Fermilab12 GDE Structure and Organization GDE Groups –Design / Cost Engineers Shidara – Asia Bialowons – Europe Garbincius – Americas –Siting, Civil Construction and Infrastructure Baldy - Europe Enomoto – Asia Kuchler – Amercas –Physics / Detectors (WWS chairs) Brau - Americas Richard - Europe Yamamoto - Asia –Accelerator Experts (34 GDE members)

13. 5-Nov-05FALC - Fermilab13 GDE Organizational Evolution for RDR Selected additions to the GDE following the BCD completion having needed skills in design, engineering, costing, etc Change Control Board –The baseline will be put under configuration control and a Board with a single chair will be created with needed expertise. R&D Board –A GDE Board will be created to evaluate, prioritize and coordinate the R&D program in support of the baseline and alternatives with a single chair Design / Cost Board –A GDE Board with single chair will be established to coordinate the reference design effort, including coordinating the overall model for implementing the baseline ILC, coordinating the design tasks, costing, etc.

14. The GDE Plan and Schedule 2005 2006 2007 2008 2009 2010 Global Design EffortProject Baseline configuration Reference Design ILC R&D Program Technical Design Expression of Interest to Host International Mgmt LHC Physics CLIC

15. 5-Nov-05FALC - Fermilab15 GDE Begins at Snowmass 670 Scientists attended two week workshop at Snowmass

16. 5-Nov-05FALC - Fermilab16 Self Organization following Technology Decision 1 st ILC workshop at KEK November 2005 ILCSC forms 5 technical WG + 1 communications and outreach WG WG1 Parameters & General Layout WG2 Main Linac WG3 Injectors WG4 Beam Delivery & MDI WG5 High gradient SCRF WG6 Communications

17. 5-Nov-05FALC - Fermilab17 Evolution by Snowmass WG1 Parms & layout WG2 Linac WG3 Injectors WG4 Beam Delivery WG5 High Grad. SCRF WG6 Communications WG1 LET beam dynamics WG2 Main Linac WG3a Sources WG3b Damping Rings WG4 Beam Delivery WG5 SCRF Cavity Package WG6 Communications Birth of the GDE and Preparation for Snowmass

18. 5-Nov-05FALC - Fermilab18 Enter the GDE - Snowmass WG1 Parms & layout WG2 Linac WG3 Injectors WG4 Beam Delivery WG5 High Grad. SCRF WG6 Communications WG1 LET beam dynamics WG2 Main Linac WG3a Sources WG3b Damping Rings WG4 Beam Delivery WG5 SCRF Cavity Package WG6 Communications GG1 Parameters & Layout GG2 Instrumentation GG3 Operations & Reliability GG4 Cost Engineering GG5 Conventional Facilities GG6 Physics Options Birth of the GDE and Preparation for Snowmass Introduction of Global Groups transition workshop → project

19. 5-Nov-05FALC - Fermilab19 GDE Organization for Snowmass WG1 LET bdyn. WG2 Main Linac WG3a Sources WG3b DR WG4 BDS WG5 Cavity GG1 Parameters GG2 Instrumentation GG3 Operations & Reliability GG4 Cost & Engineering GG5 Conventional Facilities GG6 Physics Options Technical sub-system Working Groups Global Group Provide input

20. 5-Nov-05FALC - Fermilab20 Goals of the Snowmass Workshop Recommendations for the Baseline Configuration Identify - Alternative Configurations Identify R&D –To support the baseline –To develop the alternatives Priorities for detector R&D

21. 5-Nov-05FALC - Fermilab21 Guidance for Baseline Configuration Baseline: A forward looking configuration which we are reasonably confident can achieve the required performance and can be used to give a reasonably accurate cost estimate by mid-end 2006 in a “Reference Design Report.”

22. 5-Nov-05FALC - Fermilab22 What are Alternatives and Why? Alternates: Technologies or concepts, which may provide a significant cost reduction, improved performance (or both), but which will not be mature enough to used in baseline by end 2006 Alternatives will be part of the RDR, will form an important element in the R&D program and are the key to evolving the design

23. 5-Nov-05FALC - Fermilab23 Baseline Configuration Document Our ‘Deliverable’ by the end of 2005 A structured electronic document –Documentation (reports, drawings etc) –Technical specs. –Parameter tables –… A ‘printable / readable’ summary document (~100 pages)

24. 5-Nov-05FALC - Fermilab24 Structure of the BCD Summary-like overview for those who want to understand the choice and the why Technical documentation of the baseline, for engineers and acc. phys. making studies towards RDR

25. 5-Nov-05FALC - Fermilab25 Alternatives Section(s) Note ACD is part of the BCD

26. 5-Nov-05FALC - Fermilab26 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

27. 5-Nov-05FALC - Fermilab27 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

28. 5-Nov-05FALC - Fermilab28 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

29. 5-Nov-05FALC - Fermilab29 The Key Decisions Critical choices: luminosity parameters & gradient

30. 5-Nov-05FALC - Fermilab30 Making Choices – The Tradeoffs Many decisions are interrelated and require input from several WG/GG groups

31. 5-Nov-05FALC - Fermilab31 Cost Breakdown by Subsystem Civil SCRF Linac

32. 5-Nov-05FALC - Fermilab32 TESLA Cavity 9-cell 1.3GHz Niobium Cavity Reference design: has not been modified in 10 years ~1m

33. 5-Nov-05FALC - Fermilab33 How Costs Scale with Gradient? Relative Cost Gradient MV/m 35MV/m is close to optimum Japanese are still pushing for 40- 45MV/m 30 MV/m would give safety margin C. Adolphsen (SLAC)

34. 5-Nov-05FALC - Fermilab34 Cavity Fabrication

35. 5-Nov-05FALC - Fermilab35 Gradient Results from KEK-DESY collaboration must reduce spread (need more statistics) single-cell measurements (in nine-cell cavities)

36. 5-Nov-05FALC - Fermilab36 Improved Fabrication

37. 5-Nov-05FALC - Fermilab37 Improved Processing Electropolishing

38. 5-Nov-05FALC - Fermilab38 Improved Cavity Shapes

39. 5-Nov-05FALC - Fermilab39 Cavity R&D Fabrication from large grain Nb discs May remove the need for electropolishing (  cost!)

40. 5-Nov-05FALC - Fermilab40 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

41. 5-Nov-05FALC - Fermilab41 1 vs 2 Tunnels Tunnel must contain –Linac Cryomodule –RF system –Damping Ring Lines Save maybe $0.5B Issues –Maintenance –Safety –Duty Cycle

42. 5-Nov-05FALC - Fermilab42 Possible Tunnel Configurations One tunnel of two, with variants ??

43. 5-Nov-05FALC - Fermilab43 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

44. 5-Nov-05FALC - Fermilab44 How and when to involve industry? Large Scale Project Characterization –Large Project Management –Precision Engineering –International Coordination –Costing Industrialization –Civil Construction & Infrastructure –Cryogenics –Superconducting RF structures, couplers, etc –Electronics and Control Systems –Large Scale Computing

45. 5-Nov-05FALC - Fermilab45 Since Snowmass Summaries from Working Groups and Global Groups are posted on the ILC Website Analysis and Recommendations of the 40+ Decisions posted on the ILC Website GDE Executive Committee met at SLAC 22-Sept to assess Snowmass results, make plans to produce a “strawman” baseline by mid-November Planning done in the context of organizational approach and structures for next year to produce the RDR

46. 5-Nov-05FALC - Fermilab46 RDR Matrix 22.09.2005 e- sourcee+ sourceDamping RingsRTMLMain LinacBDS Vacuum systems XXXXXX Warm magnet systems XXXX(X)X Cryomodule XX(X)XX Cavity Package XX(X)XX RF Power XX(X)XX Cryogenics XXXXXX Accelerator Physics XXXXXX Operations & Reliability XXXXXX Instrumentation XXXXXX Controls XXXXXX Systems integration XXXXXX CF&S XXXXXX Cost XXXXXX

47. 5-Nov-05FALC - Fermilab47 From Snowmass to a Baseline AugustSeptemberOctoberNovemberDecember 2005 Snowmass WW/GG summaries Response to list of 40+ decisions All documented ‘recommendations available on ILC Website (request community feedback) Review by BCD EC BCD EC publishes ‘strawman’ BCD Public Review Frascati GDE meeting BCD Executive Committee: Barish Dugan, Foster, Takasaki Raubenheimer, Yokoya, Walker

48. 5-Nov-05FALC - Fermilab48 Baseline Configuration Document Review Process BCD executive committee will monitor BCD progress –Review WG/GG summary write-ups (recommendations) –Review each question on the list of 40+ decisions BCD EC will identify and solicit needed additional input –additional expertise from ILC / GDE community Strawman BCD available mid-November Presentation of strawman BCD at Frascati GDE meeting (Dec. 10-12) Final agreed BCD to be documented by end of 2005 Final BCD becomes property of ‘change control board’ in early 2006 Begin the Reference Design to be completed by end of 2006

49. The GDE Plan and Schedule 2005 2006 2007 2008 2009 2010 Global Design EffortProject Baseline configuration Reference Design ILC R&D Program Technical Design Expression of Interest to Host International Mgmt LHC Physics CLIC