ilc accelerator activities in japan
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ILC Accelerator Activities in Japan
Akira Yamamoto (KEK/LCC) to be presented by Hitoshi Yamamoto (Tohoku Univ./LCC)
IRFU-ILC-Days, CEA-Saclay, 29, November, 2013
13/11/29 ILC Acc. Activity in Japan 1
ILC Activity and the Status in Japan
• ILC Technical Design Report has been completed, and KEK has been contributing to two major advanced technology of – Nano-beam handling technology, by hosting Advanced
Accelerator Test Facility (ATF) with international collaboration,
– Superconducting RF technology, using Superconducting Accelerator Test Facility (STF)
• ILC candidate site has been unified to be “Kitakami”
site in northern13/11/29 ILC Acc. Activity in Japan 2
FNAL
NML facility ILC RF unit testUnder construction
DESY
TTF/FLASH (DESY) ~1 GeVILC-like beam ILC RF unit(* lower gradient)
STF (KEK) operation/constructionILC Cryomodule test : S1-GloabalQuantum Beam experiment
KEK, Japan Cornell
CesrTA (Cornell)electron cloudlow emittance
INFN Frascati
DAfNE (INFN Frascati)kicker developmentelectron cloud
ATF & ATF2 (KEK)ultra-low emittanceFinal Focus opticsKEKB electron-cloud
Global Cooperation for ILC Beam Demonstration
13/11/29 ILC Acc. Activity in Japan 3
ILC TDR Design
13/11/29 ILC Acc. Activity in Japan 4
Damping Rings Polarised electron source
E+ source
Ring to Main Linac (RTML)(including bunch compressors)
e- Main Linac
e+ Main Linac
Parameters Value
C.M. Energy 500 GeV
Peak luminosity 1.8 x1034 cm-2s-1
Beam Rep. rate 5 Hz
Pulse duration 0.73 ms
Average current 5.8 mA (in pulse)
E gradient in SCRF acc. cavity
31.5 MV/m +/-20%Q0 = 1E10
Access Tunnel Access Hall(Slope <10%)
Damping RingDetector HallRing To Main Linac (RTML)
e- Main Linac (ML)
e+ ML
RTML turn-around
e- Source
e+ Source (Slope <7%)Existing surface road
Existing road
(The background photo shows a similar site image, but not the real site.)
Surface Structures
PM-13PM-12
PM-10PM-8
PM-ab PM+8PM+10 PM+12 PM+13
(Center Campus)PX
Kitakami-site cross section
- Need to establish the IP and linac orientation- Then. the access points and IR infrastructure- Then. linac length and timing
Kitakami Candidate Site
Site Specific Design to be carried out
13/11/29 5
ILC Time Line: Progress and Prospect
13/11/29 ILC Acc. Activity in Japan 6
Expecting: 3+2 year
KEK-ATF: Progress
13/11/29 ILC Acc. Activity in Japan 7
Ultra-small beam• Low emittance : KEK-ATF
– Achieved the ILC goal (2004).
• Small vertical beam size : KEK ATF2
– Goal = 37 nm, • 160 nm (spring?,
2012)• ~60 nm (April. 2013)
at low beam current
CY 2011 2012 2013 2014 2015 2016 2017 2018
ATF 長期計画 ( 案 )
Gamma-gamma laser system R&D
High Field Physics
Nano beam orbit control (FONT extension)
Develop.(2nmBPM, Fast FB)
2nm stab. R&D
Beam study 2nm steady
op.
Nano beam orbit control
Beam study
Challenging R&D of the Very high chromaticity opticsUltra small beam ~ 20 nm
Small beam
37nmSteady op.
Develop. / beam study4-mirror optical cavity (LAL/KEK)
Gamma-gamma collider R&D
General R&D
Ex) for KEKB; CSR, RF gun,Instrument develop.,Low emittance,… Test beamline for detector?
Delay by fire and earthquake
Application
Next KEK RoadmapGDE
ATF Future Plan
ILC others
813/11/29
ILC Acc. Activity in Japan 9
S1-Global hosted at KEK: Global cooperation to demonstrate SCRF system
DESY, FNAL, Jan., 2010
INFNand FNALFeb. 2010
FNAL & INFN, July, 2010
DESY, May, 2010March, 2010 June, 2010 ~
DESY, Sept. 2010
Successful global cooperation hosted by KEKwith variety of SCRF cavity design
13/11/29
STF2; SCRF ACCELERATOR PLAN AT KEK
CM1
Beam Dump
SC RF-Gun CM2a+2b
■ Objective•High Gradient (31.5 MV/m) => Demonstration of full cryomodule・ Pulse and CW operation (for effectuve R&D ・ Better efficiency power sources ・ SCRF electron gun ・ Training for next generation s
CM0 BC
CM3a +3b,
Electron Gun Full Cryomodule s Undulators Detector
13/11/29 ILC Acc. Activity in Japan 10
Plan:- Multiple Cryomodule for system
study- In-house Cavity to be installed in cooperation with industry- Wide range application including Photon Science
Gradient achieved at KEK-STF: > ~ 35 MV/mProgress: > 90 %
Plan of STF R&D beyond TDR
CY2011 CY2012 CY2013 CY2014
TDR Review
GDE
Functioning
CY2015 CY2016
TDR
11
ILC next-phase
Cryomodule (CM-1) ConstructionOperation2014 or later- cool-down- cold-test- beam-test
CFF
Cavity mass production R&D
STF
QB Construction Operation
TDR complete
ILC
CM-2a Construction
13/11/29 ILC Acc. Activity in Japan
Beyond TDR toward ILC Construction
Further Works in Preparation Phase
main linacbunchcompressor
dampingring
source
pre-accelerator
collimation
final focus
IP
extraction& dump
KeV
few GeV
few GeVfew GeV
250-500 GeV
13/11/29 ILC Acc. Activity in Japan 12
• Accelerator Engineering Design • Positron Source: Conventional source development as backup• Damping Ring: Ultra low emittance beam, Undulators, 650 MHz SCRF • RTML: residual magnetic field effect in long beam transport-line• ML: Cavity integration, CM engineering for cost-effective industrialization• BDS: Final focusing with nano-beam, alignment w/ tighter tolerance, and design update• Beam Dynamics: Accurate lattice design based on the specific site• CFS: Site specific work including Central Campus design and others• EDMS: engineering based on the EDMS
Red: Efforts to be reinforced in Japan
ILC in Linear Collider Collaboration
ILC Acc. Activity in Japan 13
ICFAChair: TBD
Program Adv. CommitteePAC – Chair: N. Holtkamp
FALC Chair: Y. Okada
To prepare for the ILC project realization ・ Detailed design study ・ Cost-effective project realization
Physics & Detectors – H. Yamamoto
CLIC – S. Stapnes
Linear Collider BoardLCB – Chair: S. Komamiya
ILC – M. Harrison - (Deputy) H. Hayano
Tech. Board
Acc. Design & Integration (ADI)
Technical Support
Linear Collider Collab. LCC Directorate - Director: L. Evans
Acc.
Phys. & DetectorTo be linked to LCC-Phys
Tech. S.
Deputy (Physics) – H. Murayama
Regional Directors- B. Foster (EU)- H. Weerts (AMs)- A. Yamamoto (AS)
KEKLC Project Office - A. Yamamoto
KEK
13/11/29
Cooperation Anticipated amongLCC, CERN, France, and Japan
• Nano-beam handling technology as a common subject for both ILC and CLIC, through ATF collaboration
• SCRF cavity integration technology, – Specially on power couplers and tuners, as a common subject for
both ILC and SPL for LHC injector upgrade,
• Cryogenic engineering – Specially on handling of large amount of helium inventory, as a
specially crucial in mountain region,
• Civil engineering study specially for the detector hall design, 13/11/29 ILC Acc. Activity in Japan 14
Summary
• Japan HE physics community will make its best effort to realize the ILC project to be hosted in Japan,
• The accelerator design and technology will be further optimized in coming few years, and the project should get “Green Sign” hopefully within a few years.
• Further detail engineering design and the site specific study is to be extended for the ILC project to be ready to go forward within a few years.
13/11/29 ILC Acc. Activity in Japan 15
backup
13/11/29 ILC Acc. Activity in Japan 16
ILC Time Scale required 12 13 14 15 16 17 18 19 20 21 22 23 24 25
ILC TDP/TDR
ATF-II Beam test
ATF-future Extended program
STF QB Beam
test
STF2- CM1+CM2a
Beam test
STF-Future Extended program
CFS Civil eng.
Site-survey
1419
1621
1924
2530
ILC constr. Commissioning
Fabrication Preparation for the project Preparation
for industrialization
Fabrication and tests, preparation for installation
Inst/commission.
Installation
After getting Green Sign 、・ Preparation for contract : ~ 2 years ・ Construction period : ~ 10 years
・ If the green sign given in 5 years 、 ILC to be realized by 2030
17
13/11/29 ILC Acc. Activity in Japan 18
KEK-ILC Preparation Organization, proposed(A. Yamamoto, November, 18, 2013)
Mechanical
Control & Comp.
Cryogenics
SRF
Conv. Facility, Siting
LCC -ILC
Safety
Electrical
Acc. Design & Integr.
Sources
D.R.
RTML & B.D.
Main Linac
BDS
MDI
System TestsATF2, STF2, & STF-COI
Physics-Detector
KEK-LC
Accelerator
Phys. WG
R&D WG
Computing &
Network
Others
MDI
BDS
KEK-ILCProject & Technical Management
Tech. Baseline: Schedule:Cost, EDMS: Communication:
A. Yamamoto
KEKLC ProjectPromotionCommittee
Acc. Tech
KEK ILC Project Preparation Center Directorate
Cavity Integration
13/11/29 ILC Acc. Activity in Japan 19
• 9-cell resonator• Input-coupler
– TTF-III coupler
• Frequency tuners– Blade tuner
• He tank• Magnetic shield
– Inside He tank
20
Legend
Toward coupler sideToward pick-up side coupler side motor side
top
bottom
Driving unit support elements are already installed on the tuner halves.
Preassembled parts
13/11/29 ILC Acc. Activity in Japan
Plug-compatible Conditions
Plug-compatible interface established
Item Varieties Baseline
Cavity shape TESLA / LL TESLA
Length Fixed
Beam pipe flange Fixed
Suspension pitch Fixed
Tuner Blade/Slide-Jack
Blade
Coupler flange (cold end)
40 or 60 40 mm
Coupler pitch Fixed
He –in-line joint Fixed
13/11/29 21ILC Acc. Activity in Japan
TTF3/XFEL coupler
STF-2 coupler
TDR coupler
(1) Deep Technical Review of Input Couplers
13/11/29 ILC Acc. Activity in Japan 22
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