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

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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

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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

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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

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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

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ILC-GDEILC-Americas Main linacs: Cryomodule design

• Cryomodule design: Fermilab, JLab– Develop 4th generation (ILC) cryomodule design, in

collaboration with INFN, DESY, KEK

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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).

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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)

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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

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ILC-GDEILC-Americas Damping Ring Options

TESLA: 17 km ring

6 km ANL-Cornell-Fermilab ring

Other designs from SLAC and LBNL

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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

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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

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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

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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

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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.