status of ilc barry barish caltech / gde 17-aug-07

Status of ILCStatus of ILC

Barry BarishCaltech / GDE

17-Aug-07

The GDE Plan and Schedule

2005 2006 2007 2008 2009 2010

Global Design Effort Project

Baseline configuration

Reference Design

ILC R&D Program

Engineering Design

Expression of Interest to Host

International Mgmt

LHCPhysics

17-Aug-07 LP07 Daegu, Korea Global Design Effort 3

Parameters for the ILC

• Ecm adjustable from 200 – 500 GeV

• Luminosity ∫Ldt = 500 fb-1 in 4 years

• Ability to scan between 200 and 500 GeV

• Energy stability and precision below 0.1%

• Electron polarization of at least 80%

• The machine must be upgradeable to 1 TeV


main linacbunchcompressor

dampingring

source

pre-accelerator

collimation

final focus

IP

extraction& dump

KeV

few GeV

few GeVfew GeV

250-500 GeV

Designing a Linear Collider

Superconducting RF Main Linac


– 11km SC linacs operating at 31.5 MV/m for 500 GeV– Centralized injector

• Circular damping rings for electrons and positrons• Undulator-based positron source

– Single IR with 14 mrad crossing angle– Dual tunnel configuration for safety and availability

RDR ILC Schematic


Reference Design and Plan

Producing Cavities

Cavity Shape

Obtaining Gradientsingle cells


4th generation prototype ILC cryomodule

Cryomodules

TESLA cryomodule


The Main Linac

• Costs have been estimated regionally and can be compared. – Understanding differences require detail comparisons –

industrial experience, differences in design or technical specifications, labor rates, assumptions regarding

quantity discounts, etc.


– Three RF/cable penetrations every rf unit– Safety crossovers every 500 m– 34 kV power distribution

Main Linac Double Tunnel


Conventional Facilities

72.5 km tunnels ~ 100-150 meters underground

13 major shafts > 9 meter diameter

443 K cu. m. underground excavation: caverns, alcoves, halls

92 surface “buildings”, 52.7 K sq. meters = 567 K sq-ft total


Reference Design and Plan

Making Positrons

6km Damping Ring

10MW Klystrons

Beam Delivery and Interaction Point


Technically Driven Timeline

August

BCD Construction Startup

2006 2010 2014 2018

RDR EDRBeginConst

EndConst

EngineerDesign


Civil Construction Timeline


CMS assembly approach:• Assembled on the surface in parallel with underground work• Allows pre-commissioning before lowering• Lowering using dedicated heavy lifting equipment• Potential for big time saving• Reduces size of required underground hall

On-surface Detector Assembly CMS approach



August

BCD

All regions require ~ 5 yrs

Construction Startup

Siting Plan being Developed

2006 2010 2014 2018

RDR EDRBeginConst

EndConst

EngineerDesign

Site Prep

Site Select


~ 5.5 km

~ 5.5 km

Central Area fits inside the Fermilab boundary

Site Characterization of the Central Area can be done

~ Boundary of Fermilab

Preconstruction Plan: Fermilab



August

BCD

All regions ~ 5 yrs



2006 2010 2014 2018

RDR EDRBeginConst

EndConst

EngineerDesign

Site Prep

Site Select

R & D -- Industrialization


Module Test – Results

DESY


E Cloud – Results

SLAC


Schedule in Graphical Form2009 2012 2015 2018

ConstructionSchedule

CryomoduleProduction

RF System Tests



August

BCD

All regions ~ 5 yrs



2006 2010 2014 2018

RDR EDRBeginConst

EndConst

EngineerDesign

Site Prep

Site Select


Gradient

e-CloudCryomoduleFull Production

System Tests

& XFEL

Detector Install

Detector Construct


Detector Concepts


Detector Performance Goals

• ILC detector performance requirements and comparison to the LHC detectors:○ Inner vertex layer ~ 3-6 times closer to IP

○ Vertex pixel size ~ 30 times smaller

○ Vertex detector layer ~ 30 times thinner

Impact param resolution Δd = 5 [μm] + 10 [μm] / (p[GeV] sin 3/2θ)

○ Material in the tracker ~ 30 times less

○ Track momentum resolution ~ 10 times better

Momentum resolution Δp / p2 = 5 x 10-5 [GeV-1] central region

Δp / p2 = 3 x 10-5 [GeV-1] forward region

○ Granularity of EM calorimeter ~ 200 times better

Jet energy resolution ΔEjet / Ejet = 0.3 /√Ejet

Forward Hermeticity down to θ = 5-10 [mrad]


detectorB

may be accessible during run

accessible during run Platform for electronic and

services (~10*8*8m). Shielded (~0.5m of concrete) from five sides. Moves with detector. Also provide vibration isolation.

Concept: one IR - two detectors

The concept is evolving and details being worked out

detectorA



August

BCD

All regions ~ 5 yrs



2006 2010 2014 2018

RDR EDRBeginConst

EndConst

EngineerDesign

Site Prep

Site Select


Gradient

e-CloudCryomoduleFull Production

System Tests

& XFEL

Detector Install

Detector Construct

Pre-Operations


Conclusions - Technical

• The ILC design is proceeding toward an engineering design by 2010. (Goal: Ready to propose construction when LHC results justify).

• R&D program is being globally coordinated to determine gradient, electron cloud, industrialization, mass production. (Resources are regional, by country and laboratory).

• Detector R&D also very important to be able to fully exploit the ILC (e.g. spatial & energy resolution) (Needs improved coordination, better regional balance).


Achieving our ILC Timeline“The other issues”

• We need to begin a campaign to prepare the way for submitting a winning proposal in about 2010.– Science Motivation is very strong, but we need LHC results for

validation (~2010)

– Must convince broader HEP and science communities on the ILC

– Must engage the global governments to take ownership and develop international governance

– Must develop a siting strategy

• The key to maintaining our timeline will be working these issues in parallel with developing an engineering design and completing the R&D

status of ilc barry barish caltech / gde 17-aug-07

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