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Status of ILC: 

Status of ILC Barry Barish Caltech / GDE 17-Aug-07

Slide2: 

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 LHC Physics

Parameters for the ILC: 

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

Slide4: 

Designing a Linear Collider Superconducting RF Main Linac

Slide5: 

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: 

Reference Design and Plan Producing Cavities Cavity Shape Obtaining Gradient single cells

Slide7: 

4th generation prototype ILC cryomodule Cryomodules TESLA cryomodule

The Main Linac: 

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.

Slide9: 

Three RF/cable penetrations every rf unit Safety crossovers every 500 m 34 kV power distribution Main Linac Double Tunnel

Conventional Facilities: 

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: 

Reference Design and Plan Making Positrons 6km Damping Ring 10MW Klystrons Beam Delivery and Interaction Point

Technically Driven Timeline : 

Technically Driven Timeline August BCD Construction  Startup 2006 2010 2014 2018 RDR EDR Begin Const End Const Engineer Design

Slide13: 

Civil Construction Timeline

Slide14: 

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

Technically Driven Timeline : 

Technically Driven Timeline August BCD All regions require ~ 5 yrs Construction  Startup Siting Plan being Developed 2006 2010 2014 2018 RDR EDR Begin Const End Const Engineer Design Site Prep Site Select

Slide16: 

~ 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

Technically Driven Timeline : 

Technically Driven Timeline August BCD All regions ~ 5 yrs Construction  Startup Siting Plan being Developed 2006 2010 2014 2018 RDR EDR Begin Const End Const Engineer Design Site Prep Site Select R & D -- Industrialization

Module Test – Results: 

Module Test – Results DESY

E Cloud – Results: 

E Cloud – Results SLAC

Schedule in Graphical Form: 

Schedule in Graphical Form 2009 2012 2015 2018 Construction Schedule Cryomodule Production RF System Tests

Technically Driven Timeline : 

Technically Driven Timeline August BCD All regions ~ 5 yrs Construction  Startup Siting Plan being Developed 2006 2010 2014 2018 RDR EDR Begin Const End Const Engineer Design Site Prep Site Select R & D -- Industrialization Gradient e-Cloud Cryomodule Full Production System Tests & XFEL Detector Install Detector Construct

Slide22: 

Detector Concepts

Detector Performance Goals: 

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]

Concept: one IR - two detectors: 

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 detector A

Technically Driven Timeline : 

Technically Driven Timeline August BCD All regions ~ 5 yrs Construction  Startup Siting Plan being Developed 2006 2010 2014 2018 RDR EDR Begin Const End Const Engineer Design Site Prep Site Select R & D -- Industrialization Gradient e-Cloud Cryomodule Full Production System Tests & XFEL Detector Install Detector Construct Pre-Operations

Conclusions - Technical : 

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” : 

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