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

The GDE Plan and Schedule Global Design EffortProject Baseline configuration Reference Design ILC R&D Program Engineering Design Expression of Interest to Host International Mgmt LHC Physics

17-Aug-07 LP07 Daegu, Korea Global Design Effort 3 Parameters for the ILC E cm 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

17-Aug-07 LP07 Daegu, Korea Global Design Effort 4 Designing a Linear Collider Superconducting RF Main Linac

17-Aug-07 LP07 Daegu, Korea Global Design Effort 5 –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

17-Aug-07 LP07 Daegu, Korea Global Design Effort 6 Reference Design and Plan Producing Cavities Cavity Shape Obtaining Gradient single cells

17-Aug-07 LP07 Daegu, Korea Global Design Effort 7 4 th generation prototype ILC cryomodule Cryomodules TESLA cryomodule

17-Aug-07 LP07 Daegu, Korea Global Design Effort 8 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.

17-Aug-07 LP07 Daegu, Korea Global Design Effort 9 –Three RF/cable penetrations every rf unit –Safety crossovers every 500 m –34 kV power distribution Main Linac Double Tunnel

17-Aug-07 LP07 Daegu, Korea Global Design Effort 10 Conventional Facilities 72.5 km tunnels ~ 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

17-Aug-07 LP07 Daegu, Korea Global Design Effort 11 Reference Design and Plan Making Positrons 6km Damping Ring 10MW Klystrons Beam Delivery and Interaction Point

17-Aug-07 LP07 Daegu, Korea Global Design Effort 12 Technically Driven Timeline August BCD Construction  Startup RDREDR Begin Const End Const Engineer Design

17-Aug-07 LP07 Daegu, Korea Global Design Effort 13 Civil Construction Timeline

17-Aug-07 LP07 Daegu, Korea Global Design Effort 14 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

17-Aug-07 LP07 Daegu, Korea Global Design Effort 15 Technically Driven Timeline August BCD All regions require ~ 5 yrs Construction  Startup Siting Plan being Developed RDREDR Begin Const End Const Engineer Design Site Prep Site Select

17-Aug-07 LP07 Daegu, Korea Global Design Effort 16 ~ 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

17-Aug-07 LP07 Daegu, Korea Global Design Effort 17 Technically Driven Timeline August BCD All regions ~ 5 yrs Construction  Startup Siting Plan being Developed RDREDR Begin Const End Const Engineer Design Site Prep Site Select R & D -- Industrialization

17-Aug-07 LP07 Daegu, Korea Global Design Effort 18 Module Test – Results DESY

17-Aug-07 LP07 Daegu, Korea Global Design Effort 19 E Cloud – Results SLAC

17-Aug-07 LP07 Daegu, Korea Global Design Effort 20 Schedule in Graphical Form Construction Schedule Cryomodule Production RF System Tests

17-Aug-07 LP07 Daegu, Korea Global Design Effort 21 Technically Driven Timeline August BCD All regions ~ 5 yrs Construction  Startup Siting Plan being Developed RDREDR 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

17-Aug-07 LP07 Daegu, Korea Global Design Effort 22 Detector Concepts

17-Aug-07 LP07 Daegu, Korea Global Design Effort 23 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 / p 2 = 5 x [GeV -1 ] central region Δp / p 2 = 3 x [GeV -1 ] forward region ○ Granularity of EM calorimeter ~ 200 times better Jet energy resolution ΔE jet / E jet = 0.3 /√E jet Forward Hermeticity down to θ = 5-10 [mrad]

17-Aug-07 LP07 Daegu, Korea Global Design Effort 24 detector B 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

17-Aug-07 LP07 Daegu, Korea Global Design Effort 25 Technically Driven Timeline August BCD All regions ~ 5 yrs Construction  Startup Siting Plan being Developed RDREDR 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

17-Aug-07 LP07 Daegu, Korea Global Design Effort 26 Conclusions - Technical The ILC design is proceeding toward an engineering design by (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).

17-Aug-07 LP07 Daegu, Korea Global Design Effort 27 Achieving our ILC Timeline “The other issues” We need to begin a campaign to prepare the way for submitting a winning proposal in about –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