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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
17-Aug-07 LP07 Daegu, Korea Global Design Effort 4
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
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 Gradientsingle cells
17-Aug-07 LP07 Daegu, Korea Global Design Effort 7
4th 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 ~ 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
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
2006 2010 2014 2018
RDR EDRBeginConst
EndConst
EngineerDesign
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
2006 2010 2014 2018
RDR EDRBeginConst
EndConst
EngineerDesign
Site Prep
Site Select
17-Aug-07 LP07 Daegu, Korea Global Design Effort 16
~ 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
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
2006 2010 2014 2018
RDR EDRBeginConst
EndConst
EngineerDesign
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 Form2009 2012 2015 2018
ConstructionSchedule
CryomoduleProduction
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
2006 2010 2014 2018
RDR EDRBeginConst
EndConst
EngineerDesign
Site Prep
Site Select
R & D -- Industrialization
Gradient
e-CloudCryomoduleFull 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 / 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]
17-Aug-07 LP07 Daegu, Korea Global Design Effort 24
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
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
2006 2010 2014 2018
RDR EDRBeginConst
EndConst
EngineerDesign
Site Prep
Site Select
R & D -- Industrialization
Gradient
e-CloudCryomoduleFull 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 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).
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 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