Transcript 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.

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 northern
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ILC Acc. Activity in Japan
2
Global Cooperation for ILC Beam Demonstration
TTF/FLASH (DESY) ~1 GeV
ILC-like beam ILC RF unit
(* lower gradient)
STF (KEK) operation/construction
ILC Cryomodule test： S1-Gloabal
Quantum Beam experiment
CesrTA (Cornell)
electron cloud
low emittance
DESY
INFN Frascati
DAfNE (INFN Frascati)
kicker development
electron cloud
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KEK, Japan
ATF & ATF2 (KEK)
ultra-low emittance
Final Focus optics
KEKB electron-cloud
ILC Acc. Activity in Japan
FNAL
Cornell
NML facility ILC RF unit test
Under construction
3
ILC TDR Design
Damping Rings
Ring to Main Linac (RTML)
(including
bunch compressors)
Polarised electron
source
e+ Main Linac
e- Main Linac
E+ source
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
E gradient in SCRF
acc. cavity
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ILC Acc. Activity in Japan
5.8 mA (in pulse)
31.5 MV/m +/-20%
Q0 = 1E10
4
Site Specific Design to be carried out
Kitakami
Candidate
Site
Kitakami-site cross section
Damping Ring
Detector Hall
Ring To Main Linac (RTML)
PM-ab
PM+8
PM+10
PM+12
PM+13
Surface Structures
PM-12
PM-10
PM-8
(Slope <7%)
PM-13
Access Tunnel
Access Hall
(Slope <10%)
RTML turn-around
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PX
(Center Campus)
(The background photo shows a similar site image, but not the real site.)
- Need to establish the IP and linac orientation
- Then. the access points and IR infrastructure
- Then. linac length and timing
5
ILC Time Line: Progress and Prospect
Expecting: 3+2 year
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ILC Acc. Activity in Japan
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KEK-ATF：Progress
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
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ILC Acc. Activity in Japan
7
ATF長期計画(案)
ATF
Future Plan
GDE
CY
2011
2012
Next KEK Roadmap
2013
ILC
Delay by fire and earthquake
Nano beam
orbit control
Small beam
Gammagamma
collider R&D
Application
General R&D
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Develop.(2n
mBPM, Fast Beam
study
FB)
Beam
study
2014
37nm
Steady op.
Develop. / beam study
4-mirror optical cavity
(LAL/KEK)
2015
2016
2017
2018
others
Nano beam orbit control (FONT
extension)
2nm stab. R&D
2nm steady op.
Challenging R&D of the Very high chromaticity optics
Ultra small beam ~ 20 nm
Gamma-gamma laser system R&D
High Field Physics
Ex) for KEKB; CSR, RF gun,
Instrument develop.,
Low emittance,…
Test beamline for detector?
8
S1-Global hosted at KEK:
Global cooperation to demonstrate SCRF system
DESY, Sept. 2010
DESY, FNAL, Jan., 2010
Successful global cooperation hosted by FNAL
KEK & INFN, July, 2010
with variety of SCRF cavity design
INFN
and
FNAL
Feb.
2010
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March, 2010
DESY, May, 2010
ILC Acc. Activity in Japan
June, 2010 ~
9
STF2; SCRF ACCELERATOR PLAN AT KEK
■ 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
Electron Gun
Full Cryomodule s
Plan:
- Multiple Cryomodule for system
study
- In-house Cavity to be installed
in cooperation with industry
- Wide range application including
Photon Science
Undulators
Detector
CM0 BC
SC RF-Gun
CM1
CM2a+2b
CM3a +3b,
Beam Dump
Gradient achieved at KEK-STF: > ~ 35 MV/m
Progress: > 90 %
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ILC Acc. Activity in Japan
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Plan of STF R&D beyond TDR
CY2011
CY2012
CY2013
CY2014
CY2015
CY2016
ILC
GDE
ILC next-phase
TDR
TDR
Review
Beyond TDR toward ILC Construction
TDR complete
STF
QB Construction
Operation
Cryomodule (CM-1) Construction
CM-2a
Construction
Operation
2014 or later
- cool-down
- cold-test
- beam-test
CFF
Cavity mass production R&D
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ILC Acc. Activity in Japan
Functioning
11
Further Works in Preparation Phase
pre-accelerator
few GeV
source
KeV
dampin g
ring
few GeV
few GeV
bunch
compressor
•
•
•
•
•
•
•
•
•
250-500 GeV
main linac
extraction
& dump
final focus
IP
collimation
Red: Efforts to be reinforced in Japan
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
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ILC Acc. Activity in Japan
12
ILC in Linear Collider Collaboration
ICFA
FALC
Chair: TBD
Chair: Y. Okada
To prepare for the ILC project realization
・Detailed design study
・Cost-effective project realization
Program Adv. Committee
PAC – Chair: N. Holtkamp
Regional Directors
-
KEK
KEK
LC Project
Office
- A. Yamamoto
Acc.
Tech.
Board
Tech. S.
Phys. & Detector
To be13/11/29
linked to LCC-Phys
B. Foster (EU)
H. Weerts (AMs)
A. Yamamoto (AS)
Linear Collider Board
LCB – Chair: S. Komamiya
Linear Collider Collab.
LCC Directorate
– H. Murayama
- Director: L. Evans
ILC
CLIC
– M. Harrison
– S. Stapnes
- (Deputy) H. Hayano
Acc. Design &
Integration (ADI)
Deputy (Physics)
Physics &
Detectors
– H. Yamamoto
Technical
Support
ILC Acc. Activity in Japan
13
Cooperation Anticipated among
LCC, 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,
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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.
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ILC Acc. Activity in Japan
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backup
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ILC Acc. Activity in Japan
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ILC Time Scale required
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ILC TDP/TDR
ATF-II
Beam test
Extended program
ATF-future
STF
QB
STF2CM1+CM2a
Beam
test
Beam
test
STF-Future
Extended program
CFS
Civil eng.
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
Site-survey
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25
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Commi
ssionin
g
ILC constr.
Fabrication
Inst/commissio
Preparation for
the project
Preparation for
industrialization
Fabrication and tests, preparation for installation
Installation
17
KEK-LC
A. Yamamoto
KEK-ILC Preparation Organization, proposed
(A. Yamamoto, November, 18, 2013)
KEK ILC Project Preparation Center
Directorate
KEK
LC Project
Promotion
Committee
KEK-ILC
Project & Technical Management
Tech. Baseline:
Schedule:
Cost, EDMS:
Communication:
LCC -ILC
Physics-Detector
Accelerator
Acc. Design & Integr.
Conv. Facility, Siting
MDI
Phys. WG
Acc. Tech
Sources
SRF
BDS
Main Linac
R&D WG
Cryogenics
D.R.
BDS
RTML & B.D.
Electrical
MDI
Mechanical
Computing
&
Network
Others
Control & Comp.
System Tests
ATF2, STF2, & STF-COI
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Safety
ILC Acc. Activity in Japan
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Cavity Integration
• 9-cell resonator
• Input-coupler
– TTF-III coupler
• Frequency tuners
– Blade tuner
• He tank
• Magnetic shield
– Inside He tank
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ILC Acc. Activity in Japan
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Legend
top
bottom
Toward pick-up side
Toward coupler side
coupler side
motor side
Preassembled parts
Driving unit support elements are already installed on the tuner halves.
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ILC Acc. Activity in Japan
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Plug-compatible Conditions
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
Plug-compatible interface established
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ILC Acc. Activity in Japan
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(1) Deep Technical Review of Input Couplers
TTF3/XFEL coupler
TDR coupler
STF-2 coupler
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ILC Acc. Activity in Japan
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