FCC-related R&Din KEK and Japan

R&D Status

• Two projects on going (Founded by JST and AMED)– JST: Med Field HTS Mag. For Small Acc.; ~1MCHF/y * (5+5)y– AMED: Med Field HTS Mag. for Medical Acc.; ~1MCHF/y * 3y

• Several Proposals to JSPS– JSPS: Advanced Conductor Development for High Field App.

• Nb3Sn and HTS; ~3MCHF/y * 5y

– JSPS: HTS High Field Magnet Development for Future Acc.• ReBCO cable; ~2MCHF overall 5y

• Nb3Sn Development Efforts by Private Companies– KSL/JASTEC, SH Copper, and Furukawa

R&D Status

• Two projects on going (Founded by JST and AMED)– JST: Med Field HTS Mag. For Small Acc.; ~1MCHF/y * (5+5)y– AMED: Med Field HTS Mag. for Medical Acc.; ~1MCHF/y * 3y

• Several Proposals to JSPS– JSPS: Advanced Conductor R&D for High Field App.

• Nb3Sn and HTS; ~3MCHF/y * 5y

– JSPS: HTS High Field Magnet Development for Future Acc.• ReBCO cable; ~2MCHF overall 5y

• Nb3Sn Development Efforts by Private Companies– KSL/JASTEC, SH Copper, and Furukawa

Major projects in Japan for HTS accelerator magnets R&D

• S-Innovation projectFunded by JST / MEXT – Kyoto U., Toshiba, KEK, KURRI, NIRS, JAEA – Fundamental technology R&D

• A-MED (NIH like org.) project – Toshiba, Kyoto U., KEK

• Dipole magnet for rotating gantry for carbon cancer therapy

– Mitsubishi Electric, universities• Dipole magnet for synchrotron

Medium Field Applications for Small Accelerators

N. Amamiya2014 FCC@ASC

Model Magnet for FFAG (TOSHIBA)

Superconducting Gantry (TOSHIBA)

R&D Status

• Two projects on going (Founded by JST and AMED)– JST: Med Field HTS Mag. For Small Acc.; ~1MCHF/y * (5+5)y– AMED: Med Field HTS Mag. for Medical Acc.; ~1MCHF/y * 3y

• Several Proposals to JSPS– JSPS: Advanced Conductor R&D for High Field App.

• Nb3Sn and HTS; ~3MCHF/y * 5y

– JSPS: HTS High Field Magnet Development for Future Acc.• ReBCO cable; ~2MCHF overall 5y

• Nb3Sn Development Efforts by Private Companies– KSL/JASTEC, SH Copper, and Furukawa

Super-electromagnetic Force Science -New Evolution in Superconductors-

Fusion(DEMO)

Future Circular Collider(FCC)

Super high field

Energy production

High energy science

High field science

Fusion (ITER)

NbTi

Superconductor marketFCC 2000t Nb3Sn 500t 　 HTS

High strength bundled

superconducting cables

Academic approach by scientists with different fields

Industries in Japan (Furukawa, Fujikura, Sumitomo)

High-field Magnet

Accelerator (LHC)

NbTi&Nb3Sn

NbTi, Nb3Sn, HTS

Control of Large electromagnetic

force

Science & Technology on

Super High Magnetic Field Superconducting magnet

requirementrequirement

requirement

100nm100nm100nm

REBa2Cu3Oytapes

Bi2Sr2Ca2Cu3Oytapes

Nb3Snwires

Advanced SC wiresNb3Al, MgB2, Fe-SC

Strands Cable Magnet technology

High-JcSolid states chemistryFlux pinningNano structureCrystal growth

High-JcSolid states chemistryHigh pressure oxygenChemical dopingFlux pinning

High-JcMetallurgyDiffusion processInternal-Sn processHigh-Sn content in Bronze Stoichiometry

Applications

CablingElectromagnetic effectsCurrent distributionStabilityStress/strain effectsEtcRolling draw

ingScribing/cutti

ng

Ａ 01 Ａ 02 Ａ 03

DesignWindingImpregnationElectromagnetic stressShielding currentStability ProtectionCryogenicsQuench detectionEtc

Electromagnetic effectsCurrent distributionStabilityStress/strain effectsEtc

5mm

Nagoya-U, KyuTec, ISTEC, Kyusyu-U, NIMS, Aoyama-U Kyoto-U, NIFS, Tohoku-U KEK, NIMS, Tohoku-U, NIFS

Fujikura, Furukawa, Sumitomo

Key Members (tentative)A01: Strands

Y. Yoshida (Nagoya-U): RE123 Crystal growth, APCK. Matsumoto (KyuTech): Flux pinning, APCT. Izumi (ISTEC-SRL): RE123 long tape, Scribing H. Kitaguchi (NIMS): Ag/Bi2223, Nb3Al, Advanced Nb3Sn

A02： Cables

N. Amemiya (kyoto-U): Electromagnetic behaviors, design of HTS cableH. Oguro (Tohoku-U) : LTS cablesN. Yanagi (NIFS): HTS stacked cables, Large current evaluation

A03：Magnet technology

S. Awaji(Tohoku-U), G. Nishijima (NIMS): High field magnets T. Ogitsu (KEK): Accelerator magnet ?? (JAEA or NIFS): Fusion magnet

Industries

Fujikura, Furukawa, Sumitomo Electric Industries

R&D Status

• Two projects on going (Founded by JST and AMED)– JST: Med Field HTS Mag. For Small Acc.; ~1MCHF/y * (5+5)y– AMED: Med Field HTS Mag. for Medical Acc.; ~1MCHF/y * 3y

• Several Proposals to JSPS– JSPS: Advanced Conductor R&D for High Field App.

• Nb3Sn and HTS; ~3MCHF/y * 5y

– JSPS: HTS High Field Magnet Development for Future Acc.• ReBCO cable; ~2MCHF overall 5y

• Nb3Sn Development Efforts by Private Companies– KSL/JASTEC, SH Copper, and Furukawa

HTS High Field Magnet Development for Future Accelerator

• HTS Coils with ReBCO Cable– KEK, Kyoto-Univ., Japan– Robinson Inst. NZ– Sub-scale race track coils

• Field ~ 15 T– Eventually small cosθ coil

• Tested in D1

R&D Status

• Two projects on going (Founded by JST and AMED)– JST: Med Field HTS Mag. For Small Acc.; ~1MCHF/y * (5+5)y– AMED: Med Field HTS Mag. for Medical Acc.; ~1MCHF/y * 3y

• Several Proposals to JSPS– JSPS: Advanced Conductor R&D for High Field App.

• Nb3Sn and HTS; ~3MCHF/y * 5y

– JSPS: HTS High Field Magnet Development for Future Acc.• ReBCO cable; ~2MCHF overall 5y

• Nb3Sn Development Efforts by Private Companies– KSL/JASTEC, SH Copper, and Furukawa

Sn in Cu tube

Nb barrier

Cu/NbMulti fimament

KSL/JASTEC － Distributed Tin Nb3Sn Wire (DT wire) Confidential

RRR ： 150 ～ 170Filament diameter : 3μm

(design value)

Development target : High Ic wire at high magnetic field for NMR magnet

13

Internal Tin Nb3Sn wire in SH Copper

200mm

Sn fil. size ~ Nb fil. size. ~ 30μmSimple structure Low Cost⇒No degradation by by cabling

For high field magnet application, since 2009, we started to develop new type internal tin wire

10 11 12 13 14 15 16 17 18 19 200

200

400

600

800

1000

1200

1400

1600

Magnetic Field (T)

No

n C

u J

c (A

/mm

2 )

Bronze route (Top data)

Internal Tin

For Ic and RRR

Plan & Action

14All Rights Reserved, Copyright© FURUKAWA ELECTRIC CO., LTD. 2015

Who: In-house development team and under collaboration with relevant institutes

How: In-house development Desk research (~Oct 2015) -> In-house authorization (~Dec 2015) -> Experiment & Trial production (Jan 2016~)

Furukawa has launched the desk research to come up with breakthrough idea for potential process.

Summary for Companies R&D

• 2 manufacturers use DT (or equivalent)– Demerit:

• Lower non cu Jc (for now)

– Merit• Less filament coupling (smaller Eff. Fil. Size)• Better RRR (better stability)• Less degradation by cabling (Jc and RRR)

• Furukawa– Bronze >> Technology Search

Possibility to enhance Nb3Sn R&D

• Add extra budget to private companies– Speed up their effort– FCC specific R&D– 200 kCHF/y max * ~5y

• Budget Source (executed by KEK)– KEK; new budget (combine with HL-LHC?)– JSPS; Advanced Conductor R&D proposal– CERN; commissioned or collaborative research?

Possibility to enhance Nb3Sn R&D

• Add extra budget to private companies– Speed up their effort– FCC specific R&D– 200 kCHF/y max * ~5y

• Budget Source (executed by KEK)– KEK; new budget (combine with HL-LHC?)– JSPS; Advanced Conductor R&D proposal– CERN; commissioned or collaborative research?

• New addendum?

Summary• Two projects on going (Founded by JST and AMED)

– Med Field HTS Magnet For Small Accelerator

• Several Proposals to JSPS– JSPS: Advanced Conductor Development for High Field

Applications (including FCC)– JSPS: HTS High Field Magnet Development for Future Acc.

• Nb3Sn Development Efforts by Private Companies– KSL/JASTEC, SH Copper, and Furukawa– Possibility to enhance their efforts

• Resources (man power and budget)– KEK resources are very limited– Try to Construct All Japan Efforts– We appreciate help from CERN