# Presentation: 485474

## ILC-Americas Regional Efforts  

- G. Dugan
- ILC/GDE and Cornell University

- International Linear Collider Industrial Forums
- Fermilab
- Sept. 21, 2005

- ILC-Americas Regional Efforts

- 9/21/05

## 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)

- 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-Americas Regional Efforts

- 9/21/05

## ILC-Americas Regional Team

- Fermilab

- SLAC

- Jefferson Lab

- Cornell LEPP

- ANL

- LBNL

- BNL

- TRIUMPF

- Universities

- LLNL

- ILC-Americas Regional Efforts

- 9/21/05

## R&D resource allocation in FY05

- ILC-Americas Regional Efforts

- 9/21/05

## 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-Americas Regional Efforts

- 9/21/05

## 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-Americas Regional Efforts

- 9/21/05

## Main Linacs: Cavity fabrication and processing: Fermilab, Jlab, ANL, Cornell

- 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>1010) cavities;

- Spring 06:
- Horz. Test
- Facility

- Early 06:
- Joint FNAL/ANL BCP facility

- ILC-Americas Regional Efforts

- 9/21/05

## 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

- ILC-Americas Regional Efforts

- 9/21/05

## 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-Americas Regional Efforts

- 9/21/05

## Main linacs: Cryomodule design

- Cryomodule design: Fermilab, JLab
- Develop 4th generation (ILC) cryomodule design, in collaboration with INFN, DESY, KEK

- ILC-Americas Regional Efforts

- 9/21/05

## 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-Americas Regional Efforts

- 9/21/05

## 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-Americas Regional Efforts

- 9/21/05

## 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-Americas Regional Efforts

- 9/21/05

## Damping Ring Options

**TESLA: 17 km ring**

**6 km ANL-Cornell-Fermilab ring**

- Other designs from SLAC and LBNL

- ILC-Americas Regional Efforts

- 9/21/05

## 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-Americas Regional Efforts

- 9/21/05

## 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-Americas Regional Efforts

- 9/21/05

## 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-Americas Regional Efforts

- 9/21/05

## 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-Americas Regional Efforts

- 9/21/05

## 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.

- ILC-Americas Regional Efforts

- 9/21/05