ILC Accelerator Activities in Japan

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


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 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


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.(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


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


• 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.


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

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


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


• 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


Documents

ILC Accelerator Activities in Japan