Introduction and Charge

Barry BarishGDE Meeting

Frascati 7-Dec-05

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The GDE after ~3 Months

• How are we doing?– BOTTOM LINE is that we are on track to produce

a BCD by end of 2005 that will provide a sound basis for entering into a reference design effort, globally coordinate R&D program, begin industrialization, determine costs, etc. next year

• What are our biggest problems?– communication, communication, communication

• Where are we going next?– Stay tuned for my next talk

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GDE Frascati – Why are we here?

• Discuss progress since Snowmass

• Finish the BCD

• Organize the GDE and the broader R&D and Design efforts for next year

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GDE Began at Snowmass

670 Scientists attended two week

workshopat

Snowmass

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Global Design Effort

– The Mission of the GDE • Produce a design for the ILC that includes a

detailed design concept, performance assessments, reliable international costing, an industrialization plan , siting analysis, as well as detector concepts and scope.

• Coordinate worldwide prioritized proposal driven R & D efforts (to demonstrate and improve the performance, reduce the costs, attain the required reliability, etc.)

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GDE Organization for Snowmass

•W

G1 LET bdyn.

•W

G2 M

ain Linac•

WG

3a Sources•

WG

3b DR

•W

G4 B

DS

•W

G5 C

avity• GG1 Parameters• GG2 Instrumentation• GG3 Operations & Reliability• GG4 Cost & Engineering• GG5 Conventional Facilities• GG6 Physics Options

Technical sub-systemWorking Groups

Global Group

Provide input

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Goals of the Snowmass Workshop• Recommendations for the Baseline Configuration

• Identify - Alternative Configurations

• Identify R&D– To support the baseline– To develop the alternatives

• Priorities for detector R&D

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Guidance for Baseline Configuration

Baseline: A forward looking configuration which we are reasonably confident can achieve the required performance and can be used to give a reasonably accurate cost estimate by mid-end 2006 in a “Reference Design Report.”

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What are Alternatives and Why?

Alternates: Technologies or concepts, which may provide a significant cost reduction, improved performance (or both), but which will not be mature enough to used in baseline by end 2006

Alternatives will be part of the RDR, will form an important element in the R&D program and are the key to evolving the design

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Baseline Configuration Document

• Our ‘Deliverable’ by the end of 2005

• A structured electronic document– Documentation (reports, drawings etc)– Technical specs.– Parameter tables– …

• A ‘printable / readable’ summary document (~100 pages) (ready in early 2006)

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Structure of the BCDSummary-like overview for those who want to understand the choice and the why

Technical documentation of the baseline, for engineers and acc. phys. making studies towards RDR

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Alternatives Section(s)

Note ACD is part of the BCD

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The Key Decisions

Critical choices: luminosity parameters & gradient

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Making Choices – The Tradeoffs

Many decisions are interrelated and require input from several WG/GG groups

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From Snowmass to a Baseline

August September October November December

2005Snowmass

WW/GG summariesResponse to list of 40+ decisions

All documented ‘recommendations available on ILC Website (request community feedback)

Review by BCD EC BCD EC publishes‘strawman’ BCD

PublicReview Frascati

GDE meeting

BCD Executive Committee:BarishDugan, Foster, Takasaki Raubenheimer, Yokoya, Walker

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Baseline Configuration Document Review Process

• BCD executive committee has monitored BCD progress– Review WG/GG summary write-ups (recommendations)– Review each question on the list of 40+ decisions

• BCD EC identified and solicited needed additional input– Commissioned 5 “white papers” – Invited independent reviewers (Oide, Richter & Rivkin)

• Strawman BCD available mid-November• Presentation of strawman BCD at Frascati GDE meeting

(Dec. 10-12)

• Final agreed BCD to be documented by end of 2005• Final BCD becomes property of ‘Change Control Board’ in

early 2006• Reference Design to be completed by end of 2006

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The Prospects for the ILC

• The science motivation for the ILC is our strongest weapon

• The technical basis for the ILC is very stong• A global effort to design the ILC is underway and

working• Establishing a baseline will make the ILC more

real and taken more seriously--------------------------

• A sound design must be established with convincing and affordable costing.

• Global R&D program to demonstrate the ILC, improve over the baseline and reduce costs.