ILC-GDE ILC-Americas 9/21/05ILC-Americas Regional Efforts1 G. Dugan ILC/GDE and Cornell University International Linear Collider Industrial Forums Fermilab Sept. 21, 2005

ILC-GDE ILC-Americas 9/21/05ILC-Americas Regional Efforts2 Baseline/alternate Configuration and Reference Design Report Continue to define LC Configuration (Snowmass, Aug 05) Baseline Configuration Document, together with alternatives, by end of 2005 –A structured electronic document, including links to reports, drawings, technical specs, parameter tables, etc. –A ‘printable / readable’ summary document (~100 pages) Put Baseline under Configuration Control (Jan 06) By end of 2006, develop 3 volumes -- 1) Reference Design Report; 2) Shorter glossy version for non-experts and policy makers ; 3) Detector Concept Report Supporting R&D Program –Coordinate worldwide R & D efforts, in order to demonstrate and improve the performance, reduce the costs, attain the required reliability, etc. (Proposal Driven to GDE) GDE – Elements of the Near Term Plan

ILC-GDE ILC-Americas 9/21/05ILC-Americas Regional Efforts3 ILC-Americas Regional Team Fermilab SLAC Jefferson Lab Cornell LEPP ANL LBNL BNL TRIUMPF Universities LLNL

ILC-GDE ILC-Americas 9/21/05ILC-Americas Regional Efforts4 R&D resource allocation in FY05

ILC-GDE ILC-Americas 9/21/05ILC-Americas Regional Efforts5 ILC-Americas Lab R&D Program in FY05-06 Main Linacs –1.3 GHz SCRF cavity fabrication and processing: Fermilab, JLab, ANL, Cornell –High gradient cavity R&D: Cornell, Jlab, SLAC –ILC cryomodule design: Fermilab, Jlab, SLAC –RF power sources and controls- SLAC, LLNL, Fermilab –Machine design and simulation- SLAC, Fermilab, Cornell Sources –Design and simulation- SLAC, LLNL, Cornell Damping rings –Machine design and simulation- LBNL, Fermilab, SLAC, ANL, Cornell –Component prototyping- SLAC, LLNL, Cornell Beam delivery systems –Design and simulation- SLAC, BNL, Fermilab –Component prototyping- BNL Global Systems –Availability and machine protection- SLAC, Fermilab –Site development- Fermilab, SLAC

ILC-GDE ILC-Americas 9/21/05ILC-Americas Regional Efforts6 ILC-Americas University R&D Program SCRF materials and surface preparation: Wisconsin, Northwestern, Old Dominion RF power sources: Yale, MIT Polarized electron source: Wisconsin Polarized positron source: Tennessee, Princeton Damping rings: Illinois, NCA&T Instrumentation, diagnostics: UCLA, Berkeley, Vanderbilt Mover systems: Colorado State Radiation hard electronics: UC Davis Ground motion: Northwestern

ILC-GDE ILC-Americas 9/21/05ILC-Americas Regional Efforts7 Main Linacs: Cavity fabrication and processing: Fermilab, Jlab, ANL, Cornell 4: AES 4: ACCEL 4: KEK Processing Jlab/Cornell/ANL Vertical Testing Cornell/Jlab Horizontal Testing Fermilab Cavity to String Assembly Cavity Fabrication FNAL & SMTF Vertical Testing FNAL Cavity Processing FNAL & ANL Achieve 35 MV/m by FY08 Acquire cavities from AES, ACCEL, KEK; utilize existing lab facilities to process cavities Enhance infrastructure at Fermilab/ANL for cavity treatment and testing; establish process for repeatable production of high-performance (35 MV/m, Q>10 10 ) cavities; Spring 06: Horz. Test Facility Early 06: Joint FNAL/ ANL BCP facility

ILC-GDE ILC-Americas 9/21/05ILC-Americas Regional Efforts8 Main Linacs: High-gradient R&D Cornell: Re-entrant 1.3 GHz cavity Single cell Nb cavity, 70 mm TESLA- like aperture: achieved 46 MV/m at Q = Hpk = mT, Epk = 100 MV/m JLab: Single crystal 2.3 GHz LL cavity Single crystal BCP: surface rms 27 nm. Typical BCP: surface rms 1247 nm, EP: 251 nm Hpk=160.2 mT

ILC-GDE ILC-Americas 9/21/05ILC-Americas Regional Efforts9 Main linacs: RF power sources and controls Development at SLAC, Fermilab and LLNL Baseline modulators and klystrons, LLRF and controls developments at SMTF Alternate modulator designs for reduced cost/improved reliability and performance: SNS-style, Marx generator, series-switched (DTI) Coupler improvements beyond TTF-3 design Evaluate RF distribution system options (alternatives to circulators) L-band test facility at SLAC (ESB) (FY06/07) –Test modulators and klystrons –Provide rf power for NC accelerator structures and couplers

ILC-GDE ILC-Americas 9/21/05ILC-Americas Regional Efforts10 Main linacs: Cryomodule design Cryomodule design: Fermilab, JLab –Develop 4 th generation (ILC) cryomodule design, in collaboration with INFN, DESY, KEK

ILC-GDE ILC-Americas 9/21/05ILC-Americas Regional Efforts11 Main Linacs: Industrialization Industrialization –In the longer term: develop and support start-up industrial production capability in the US; transfer cavity and cryomodule technology; pursue paths to large-scale industrialization and design for manufacturing. –In FY06, in support of the reference design and cost estimate: initiate industrial cost studies for cavities, cryomodules, RF systems, civil construction (subject to fiscal constraints).

ILC-GDE ILC-Americas 9/21/05ILC-Americas Regional Efforts12 Electron and Positron Sources Electron source: SLAC, Fermilab –Continuing photocathode development, begin laser and gun development Positron source: SLAC, LLNL, Cornell –Studying target design for undulator, conventional, and Compton sources Radiation damage Thermal shock / beam damage Engineering issues (high rotation speed, remote handling) –Capture and optics studies –Normal conducting capture structure design and fabrication –Complete E-166 polarized positron production (summer 2005)

ILC-GDE ILC-Americas 9/21/05ILC-Americas Regional Efforts13 Damping rings Development at LBNL, SLAC, Fermilab, ANL, Cornell Damping ring design and simulation –Optics, tuning studies, collective effects Wiggler design and optimization SEY studies for electron cloud –Laboratory measurements at SLAC –Building three chambers for PEP-II installation to verify solutions ATF at KEK –Instrumentation, Beam studies, ATF Kicker development, FONT/Feather

ILC-GDE ILC-Americas 9/21/05ILC-Americas Regional Efforts14 Damping Ring Options TESLA: 17 km ring 6 km ANL- Cornell- Fermilab ring Other designs from SLAC and LBNL

ILC-GDE ILC-Americas 9/21/05ILC-Americas Regional Efforts15 Main linacs- Beam Line Design and simulation Bunch compressor design: SLAC, LBNL, Cornell –Multiple stage designs are being considered for reduced energy spread or reduced bunch length Main linac emittance tuning: SLAC, Fermilab, Cornell –Evaluating emittance tuning procedures –Considering implications on linac design (Stronger or weaker lattice desired? BPM resolution? Laser-straight linac required? Tolerance to stray fields? Benefits from RF cavity “HOM BPMs”?) Quadrupole alignment and vibration studies: SLAC BPM, Laser wire, cavity diagnostics tests: SLAC, with TTF, ATF and LCLS

ILC-GDE ILC-Americas 9/21/05ILC-Americas Regional Efforts16 Beam Delivery System Optics design and layout (SLAC, Fermilab, UK groups) –Study variations of BDS with different crossing angles, collimation systems, L*, etc to understand tradeoffs ATF-2 at KEK –Demonstration of new FFS using ATF beam –Proposal is being assembled – detailed contributions to be defined Specialty magnets (SLAC, BNL) –SC final quadrupoles are being prototyped at BNL End Station A Test Facility (SLAC, UK and University groups) –MDI instrumentation studies, collimator wakefield studies –Construct IR mock-up

ILC-GDE ILC-Americas 9/21/05ILC-Americas Regional Efforts17 Global systems-availability and machine protection Availability and downtime modeling- SLAC, with DESY –More to it than just MTBF and MTTR –Expanding a time-domain simulation written for USLCTOS –Currently studying impact of low-intensity conventional positron source in conjunction with undulator source Machine protection - SLAC, with DESY –Just getting started. Current work: classifying scenarios which lead to single-pulse or single-train damage

ILC-GDE ILC-Americas 9/21/05ILC-Americas Regional Efforts18 Global systems: Civil/Site development Sample site development efforts focused on Illinois site(s) near Fermilab. Fermilab and SLAC civil engineers are evaluating five sample sites using a site considerations matrix- common methodology for all regional sites The current effort is not intended to select a potential site, but rather to understand from the beginning how the features of the sites will affect design, performance, and cost. A single sample site will be selected as the Americas region candidate for inclusion in the 2006 Reference Design Report

ILC-GDE ILC-Americas 9/21/05ILC-Americas Regional Efforts19 Conclusion ILC-Americas is getting organized and co- ordinated. A robust program is being developed, in support of the GDE goals of a baseline (plus alternatives) configuration this year, and a reference design report and cost estimate by the end of ILC-related R&D efforts in the Americas are growing. To optimally utilize the available resources, we need to fully co-ordinate the R&D efforts within the Americas and across the regions.