1 / 30

Barry Barish TDR Technical Design Review KEK Laboratory 13-Dec-12

Introduction TDR Technical Design Review. Barry Barish TDR Technical Design Review KEK Laboratory 13-Dec-12. A Global Initiative for an ILC. International Committee for Future Accelerators (ICFA) representing major particle physics laboratories worldwide.

cassia
Download Presentation

Barry Barish TDR Technical Design Review KEK Laboratory 13-Dec-12

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Introduction TDR Technical Design Review Barry Barish TDR Technical Design Review KEK Laboratory 13-Dec-12 Global Design Effort

  2. A Global Initiative for an ILC International Committee for Future Accelerators (ICFA) representing major particle physics laboratories worldwide. • Chose ILC accelerator technology (SCRF) • Determined ILC physics design parameters • Formed Global Design Effort and Mandate (TDR) Global Design Effort

  3. HEP Lab-driven R&D programs Room temperature copper structures (KEK and SLAC) OR Superconducting RF cavities (DESY) Global Design Effort 3

  4. ITRP in Korea Linear Collider School 2012 Lecture I-2

  5. Key Parameters Luminosity ∫Ldt = 500 fb-1 in 4 years Ecm adjustable from 200 – 500 GeV Ability to scan between 200 and 500 GeV Energy stability and precision below 0.1% Electron polarization of at least 80% ILCSC/ICFA Parameters Studies physics driven input Options • The machine must be upgradeable to 1 TeV • Positron polarization desirable as an upgrade Global Design Effort

  6. GDE -- Design a Linear Collider Superconducting RF Main Linac Global Design Effort 6

  7. GDE – Mandate (7-Feb 06) Global Design Effort 7

  8. Reference Design - 2008 Global Design Effort

  9. RDR Design Parameters Global Design Effort

  10. Design decisions accepted globally! Global Design Effort

  11. Push – Pull Detector Concept Both detectors without platforms Both detectors with platforms • Vibration stability will be one of the major criteria in eventual selection of a motion system design Global Design Effort

  12. Major R&D Goals for Technical Design SCRF High Gradient R&D - globally coordinated program to demonstrate gradient by 2010 with 50%yield; improve yield to 90% by TDR (end 2012) Manufacturing: plug compatible design; industrialization, etc. Systems tests: FLASH; plus NML (FNAL), STF2 (KEK) post-TDR Test Facilities ATF2 - Fast Kicker tests and Final Focus design/performance EARTHQUAKE RECOVERY CesrTA - Electron Cloud tests to establish damping ring parameters/design and electron cloud mitigation strategy FLASH – Study performance using ILC-like beam and cryomodule (systems test) Global Design Effort Global Design Effort

  13. Globally Coordinated SCRF R&D • Achieve high gradient (35MV/m); develop multiple • vendors; make cost effective, etc • Focus is on high gradient; production yields; cryogenic • losses; radiation; system performance Global Design Effort

  14. Progress in Cavity Gradient Yield Production yield: 94 % at > 28 MV/m, Average gradient: 37.1 MV/m Global Design Effort

  15. Global Plan for SCRF R&D We are here Global Design Effort

  16. Accelerator Test Facility (ATF) Global Design Effort

  17. ATF-2 earthquake recovery • Vertical beam size (2012) = 167.9 plus-minus nm • 1 sigma Monte Carlo • Post-TDR continue to ILC goal of 37 nm + fast kicker • Stabilization studies Global Design Effort

  18. CesrTA - Wiggler Observations 0.002”radius Electrode a best performance Global Design Effort

  19. Baseline Mitigation Plan *Drift and Quadrupole chambers in arc and wiggler regions will incorporate antechambers • Preliminary CESRTA results and simulations suggest the presence of sub-threshold emittance growth • Further investigation required • May require reduction in acceptable cloud density a reduction in safety margin • An aggressive mitigation plan is required to obtain optimum performance from the 3.2km positron damping ring and to pursue the high current option Global Design Effort

  20. Plan for TDR Global Design Effort

  21. Proposed Design changes for TDR RDR SB2009 • Single Tunnel for main linac • Move positron source to end of linac *** • Reduce number of bunches factor of two (lower power) ** • Reduce size of damping rings (3.2km) • Integrate central region • Single stage bunch compressor Global Design Effort

  22. ILC TDR Layout Damping Rings Polarised electron source Ring to Main Linac (RTML) (inc. bunch compressors) e+ Main Linac Beam Delivery System (BDS) & physics detectors Beam dump Polarised positronsource e- Main Linac not too scale Global Design Effort

  23. Candidate Sites in Japan Global Design Effort

  24. Tunnels in the Japanese Mountains New Tunnel Shape Grooved Insert for CesrTA Wiggler • Japanese initiative for hosting the ILC • Higgs Factory / Staged approach • Developed through International Collaboration • Linear Collider Collaboration (Lyn Evans – Director) Global Design Effort

  25. TDR – Site Dependent Design TDR (common) • Core requirements • Accelerator layout • Technologies Major site-dependent differences • Conventional Facilities • High Level RF Global Design Effort

  26. Upgrades – Luminosity RF parameters for luminosity upgrade – Chapter 12 • Doubling average beam power requires additional RF power (klystrons and modulators) for the main linacs and modifications to the damping rings. • Other systems already specified for higher beam power (larger number of bunches per pulse). Global Design Effort

  27. Upgrades - Energy Energy upgrade scenarios – Chapter 12 • Upgrading the beam energy will require extending the main SCRF linacs to provide the additional 250 GeV per beam. • The beam current for the TeV upgrade (7:6 mA), less than that for the luminosity upgrade (8:8 mA) • The cost of an energy upgrade is completely dominated by the extension of the main linacs and the time-dependent choice of accelerating gradient. (present three scenarios) Global Design Effort

  28. Higgs Factory - Staged ILC 250 GeV (Higgs Factory)  500 GeV baseline  1 TeV • Table 12.1 presents primary parameters for a 250 GeV CM first stage, the luminosity upgrade for the 500 GeV baseline machine, and the two parameter sets for the TeV upgrade: low Beamstrahlung (A) and high Beamstrahlung (B). The baseline 500 GeV parameters are included for reference. • The initial 250 GeV stage (Light Higgs Factory) needs a re-evaluation of machine parameters for cost-performance optimization at that energy. Global Design Effort

  29. Project Implementation Planning Possible Roadmap to an ILC Global Design Effort

  30. Final Remarks and Conclusions The TDR completes the mandate for the ILC The major milestones in the R&D program have been achieved and a detailed conceptual design for the ILC has been produced, including a new value costing • A new integrated Linear Collider Collaboration (LCC) under ICFA, including ILC, CLIC and Detectors/Physics will carry out the next steps toward realization of an ILC Global Design Effort

More Related