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 ... - Then. the

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


FNAL

NML facility ILC RF unit test Under construction

DESY

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

KEK, Japan Cornell

CesrTA (Cornell) electron cloud low emittance

INFN Frascati

DAfNE (INFN Frascati) kicker development electron cloud

ATF & ATF2 (KEK) ultra-low emittance Final Focus optics KEKB electron-cloud

Global Cooperation for ILC Beam Demonstration


ILC TDR Design


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 Ring Detector Hall Ring To Main Linac (RTML)

RTML turn-around

(Slope <7%)

(The background photo shows a similar site image, but not the real site.)

Surface Structures

PM-13

PM-12 PM-10

PM-8

PM-ab PM+8 PM+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


Expecting: 3+2 year

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

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.(2n

mBPM, 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 optics Ultra small beam ~ 20 nm

Small beam

37nm

Steady op.

Develop. / beam study

4-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 Roadmap GDE

ATF Future Plan

ILC others

8 13/11/29

S1-Global hosted at KEK: Global cooperation to demonstrate SCRF system

DESY, FNAL, Jan., 2010

INFN

and

FNAL

Feb.

2010

FNAL & INFN, July, 2010

DESY, May, 2010 March, 2010 June, 2010 ~

DESY, Sept. 2010

Successful global cooperation hosted by KEK with variety of SCRF cavity design


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


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/m Progress: > 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) Construction Operation

2014 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


• 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

ICFA Chair: TBD

Program Adv. Committee PAC – 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 Board LCB – 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. & Detector To be linked to LCC-Phys

Tech. S.

Deputy (Physics) – H. Murayama

Regional Directors - B. Foster (EU) - H. Weerts (AMs) - A. Yamamoto (AS)

KEK LC Project Office - A. Yamamoto

KEK

13/11/29

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,


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.


backup


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

14 19

16 21

19 24

25 30

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


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 Tests ATF2, STF2, & STF-COI

Physics-Detector

KEK-LC

Accelerator

Phys. WG

R&D WG

Computing &

Network

Others

MDI

BDS

KEK-ILC Project & Technical Management

Tech. Baseline: Schedule: Cost, EDMS: Communication:

A. Yamamoto

KEK LC Project Promotion Committee

Acc. Tech

KEK ILC Project Preparation Center Directorate

Cavity Integration


• 9-cell resonator

• Input-coupler

– TTF-III coupler

• Frequency tuners

– Blade tuner

• He tank

• Magnetic shield

– Inside He tank

20

Legend

Toward coupler side Toward 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 21 ILC Acc. Activity in Japan

TTF3/XFEL coupler

STF-2 coupler

TDR coupler

(1) Deep Technical Review of Input Couplers


Documents

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 ... - Then. the