ILC Accelerator Status Lyn Evans, CERN, Imperial College London 1A. Yamamoto, LCB ILC Acc. Status

ILC - GLOBAL DESIGN EFFORT (GDE) LCC LHC RDR, 2007 TDR, 2013 Linear Collider Collaboration Higgs discovered 1980 ~ -Basice Study started SC Technology selected 2 A. Yamamoto, LCB ILC Acc. Status

ILC Accelerator in TDR Damping Rings Polarised electron source E+ source Ring to Main Linac (RTML) (including bunch compressors) e- Main Linac e+ Main Linac ParametersValue C.M. Energy500 GeV Peak luminosity1.8 x10 34 cm -2 s -1 Beam Rep. rate5 Hz Pulse duration0.73 ms Average current 5.8 mA (in pulse) FF beam size (y)5.9 nm E gradient in SCRF acc. cavity 31.5 MV/m +/-20% Q 0 = 1E10 3

ILC Accelerator in TDR Damping Rings Polarised electron source E+ source Ring to Main Linac (RTML) (including bunch compressors) e- Main Linac e+ Main Linac ParametersValue C.M. Energy500 GeV Peak luminosity1.8 x10 34 cm -2 s -1 Beam Rep. rate5 Hz Pulse duration0.73 ms Average current 5.8 mA (in pulse) FF beam size (y)5.9 nm E gradient in SCRF acc. cavity 31.5 MV/m +/-20% Q 0 = 1E10 4 Demonstrated in TDR Progress in 2014

CM2 reached at Fermilab in 2014 Cryomodule test at Fermilab reached MV/m, exceeding ILC specification 5 CavityGradient (MV/m) A. Yamamoto, LCB ILC Acc. Status

CM1 Beam Dump SC RF-Gun CM2a+2b Objective High Gradient (31.5 MV/m) ＝＞ Demonstration of full cryomodule Pulse and CW operation (for effective R&D) Better efficiency power sources SRF electron gun Training for next generation s CM0 BC CM3a +3b, Electron Gun Full Cryomodules Undulators (in future) Detecto r 6 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 Cavity VT: > 35 MV/m with the yield of > 90 % KEK-STF2 is to be a SRF Beam Accelerator Facility A. Yamamoto, LCB ILC Acc. Status

CM1 + CM2a installation completed in STF2-RF distribution to be installed in 2015 STF2 full beam line to be completed in JFY2015 A. Yamamoto, LCB ILC Acc. Status

超伝導加速器利用促進化推進棟 Superconducting Accelerator Promotion Center A. Yamamoto, LCB ILC Acc. Status 8

Superconducting Application Promotion Center Vertical test area Control room Panolama view of exp. hall As of January, 2015 J. Hayano A. Yamamoto, LCB ILC Acc. Status 9

Vertical test area North-east area Control room Entrance hall steps Panolama view of exp. hall A. Yamamoto, LCB ILC Acc. Status 10

Cooperation of Hub-Labo and industry Hub-laboratories responsible to regional procurements to be open for any world-wide industry participation Regional Hub-Lab: E, & … Regional Hub-Lab: E, & … Regional Hub-Lab: A Regional Hub-Lab: A Regional Hub-Lab: B Regional Hub-Lab: B Regional Hub-Lab: D Regional Hub-Lab: D World-wide Industry responsible to ‘Build-to-Print’ manufacturing World-wide Industry responsible to ‘Build-to-Print’ manufacturing ILC Host-Lab Regional Hub-Lab: C: responsible to Hosting System Test and Gradient Performance Regional Hub-Lab: C: responsible to Hosting System Test and Gradient Performance Technical Coordination for Lab-Consortium Technical Coordination for Lab-Consortium : Technical coordination link : Procurement link - Manufacturing by Industry - Qualification by Hub-lab 11

SRF Facilities anticipated for Hub/Consortium CM KEK FNAL, JLab FNAL/ILCTA, ANL Cornell JLAB KEK DESY, E-XFEL SLAC, LCLS-II CEA-Saclay, LAL IHEP, PKU RRCAT 12

ILC Hub-Laboratories/Consortiums to be established Function for QualificationEuropeAmericasAsia SRF Cavity qualification/testDESY-AMTFFNAL,JlabKEK-STF Power-Input Coupler conditioningLAL-OrsaySLACKEK-STF Cryomodule AssemblySaclayFNAL, JlabKEK/ILC Cryomodule qualification/testDESY-AMTFFNALKEK/ILC Current status EXFEL in progress 100module/2years 800cavities/2years LCLS-II to be realized 35module/2years 280cavities/2years STF は R&D 用、 COI において最低限の ILC 機能を整備 TDR (Ecm=500GeV) 1850 cryomodule, 18,000 cavities (~ 6 years construction) => ~100 CM/year/region, ~1,000 cavities/year/region 13 A. Yamamoto, LCB ILC Acc. Status

ILC Site Candidate Location in Japan: Kitakami Oshu Ichinoseki Ofunato Kesen-numa Sendai Express- Rail High-way IP Region Proposed by JHEP community Endorsed by LCC To be authorized by Government 14 A. Yamamoto, LCB ILC Acc. Status

A site specific change: principle feature: 18m vertical shaft CR-003: Detector Hall design Detector Hall: L=108m W25.0*H42.0 (TDR: L=142m) 15 IP Region 15 A. Yamamoto, LCB ILC Acc. Status

MEXT’s Organization for Studying ILC 16 MEXT Particle & Nuclear Phys. Working Group formed in 2014 TDR Validation Working Group formed in 2014 SCJ ILC Taskforce formed in 2013 Academic Experts Committee formed in 2014 Recommendation in A. Yamamoto, LCB ILC Acc. Status

Progress in MEXT Academic Expert Committee for the ILC Particle and Nuclear Physics WG TDR Verification WG (* closed mtg ） 1 st Academic Expert Committee (14/05/08) 1st : 6/24Status and Prospect for Particle Physics ILC Project and the Physics 1 st : 6/30TDR and the cost, generally reported 2nd : 7/29Strategies at EU and Ams 2 nd : 7/28*SRF and the cost 3rd : 8/27Cosmic-ray and astrophysics ILC Science Objectives 3 rd : 9/8*SRF and the cost (continued) CFS 4th : 9/22Flavor and Neutrion Physics IILC Science Objectives 4 th : 11/4*ILC construction cost 5th : 10/21Summary discussion for a report 2 nd Academic Expert Committee (14/11/14) 6th : 1/8Experience from SSC ILC Science Objectives 5 th ： 1/26* ILC Accelerator and human resources 7th : 2/17 Science Objectives per 6 th ： 3/2* Summary discussions 8th : 3/30Summary discussion for a report 3 rd Academic Expert Committee (15/4/21) 17

Commissioned Survey, contracted with NRI, for “Spin-off” of Accelerator Technology See a report, distributed Economical spin-off effect A co-efficient parameter “~ 3” given by CERN. There was some discussion how to justify “3”.

A New Survey Contract MEXT, planned Subject “Survery and Analysis for Technical Feasiblity of the ILC Realization and Technical Issues for the Accelerator Construction”

Further Plans 2015: April 21: 3 rd Academic Experts Committee (AEC) ~ May: Another survey start ~ June: 4 th and 5 th AEC 2016 ~ Feb. Complete the survey ~ MarchExpected completion of AEC.

Statement on “Towards the realization of the International Linear Collider” April , Tokyo At the ILC Tokyo Symposium, held on 22 April 2015 at the Ito International Hall, Tokyo, Japan, the Linear Collider Collaboration (LCC) and the participants around the world at the Asian Linear Collider Workshop (ALCW) 2015 decided to issue a statement confirming their conviction of the scientific justification for a prompt realization of the International Linear Collider (ILC). 21 Statement of the International Community April 22, 2015ALCW 2015

1)The ILC’s role in particle physics is to explore with exquisite detail the time just after the beginning of the Universe. This research is unique and indispensable for a deep understanding of how our Universe began, how it evolved, and how it works today. We are eager to build and work at the facility. 22April 22, 2015ALCW 2015

2)The technical feasibility of the ILC has been demonstrated in the Technical Design Report. The ILC is ready to be built following the completion of an engineering-design phase. The project is now in a phase where governmental involvement should lead to a decision to realize the project. In this context we express our appreciation of the ongoing project assessment being undertaken by the Japanese government. 23April 22, 2015ALCW 2015

3)The ILC is one of the largest scientific projects ever proposed, on a similar scale to the Large Hadron Collider project. Its realization as an international project requires the establishment of an international framework for sharing the cost and expertise among countries. We therefore intend to facilitate discussions between governments and funding authorities to achieve this goal as soon as possible. 24April 22, 2015ALCW 2015