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9/21/05 ILC-Americas Regional Efforts 1
ILC-GDEILC-Americas
ILC-Americas Regional Efforts
G. Dugan
ILC/GDE and Cornell University
International Linear Collider Industrial Forums Fermilab
Sept. 21, 2005
9/21/05 ILC-Americas Regional Efforts 2
ILC-GDEILC-Americas
• 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
9/21/05 ILC-Americas Regional Efforts 3
ILC-GDEILC-Americas ILC-Americas Regional Team
Fermilab
SLAC
Jefferson Lab
Cornell LEPP
ANL
LBNL
BNL
TRIUMPF
Universities
LLNL
9/21/05 ILC-Americas Regional Efforts 4
ILC-GDEILC-Americas R&D resource allocation in
FY05
9/21/05 ILC-Americas Regional Efforts 5
ILC-GDEILC-Americas
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
9/21/05 ILC-Americas Regional Efforts 6
ILC-GDEILC-Americas 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
9/21/05 ILC-Americas Regional Efforts 7
ILC-GDEILC-Americas
Main Linacs: Cavity fabrication and processing: Fermilab, Jlab, ANL, Cornell
4: AES 4: ACCEL 4: KEK
ProcessingJlab/Cornell/ANL
Vertical TestingCornell/Jlab
Horizontal TestingFermilab
Cavity toString Assembly
Cavity Fabrication
FNAL & SMTF
Vertical Testing
FNAL
Cavity Processing
FNAL & ANL
Achieve 35 MV/mby 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>1010) cavities;
Spring 06:Horz. Test Facility
Early 06:Joint FNAL/ANL BCP facility
9/21/05 ILC-Americas Regional Efforts 8
ILC-GDEILC-Americas 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 = 1010. Hpk = 175.5 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
9/21/05 ILC-Americas Regional Efforts 9
ILC-GDEILC-Americas 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
9/21/05 ILC-Americas Regional Efforts 10
ILC-GDEILC-Americas Main linacs: Cryomodule design
• Cryomodule design: Fermilab, JLab– Develop 4th generation (ILC) cryomodule design, in
collaboration with INFN, DESY, KEK
9/21/05 ILC-Americas Regional Efforts 11
ILC-GDEILC-Americas 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).
9/21/05 ILC-Americas Regional Efforts 12
ILC-GDEILC-Americas 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)
9/21/05 ILC-Americas Regional Efforts 13
ILC-GDEILC-Americas 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
9/21/05 ILC-Americas Regional Efforts 14
ILC-GDEILC-Americas Damping Ring Options
TESLA: 17 km ring
6 km ANL-Cornell-Fermilab ring
Other designs from SLAC and LBNL
9/21/05 ILC-Americas Regional Efforts 15
ILC-GDEILC-Americas 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
9/21/05 ILC-Americas Regional Efforts 16
ILC-GDEILC-Americas 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
9/21/05 ILC-Americas Regional Efforts 17
ILC-GDEILC-Americas 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
9/21/05 ILC-Americas Regional Efforts 18
ILC-GDEILC-Americas 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
9/21/05 ILC-Americas Regional Efforts 19
ILC-GDEILC-Americas 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 2006.
• 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.