graph JAEA
No.

4October 2014

Well, What's this ？

Japan Atomic Energy Agency

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Hello everyone,
this is JT-60SA
We are jointly constructing the JT-60SA
machine in collaboration with researchers and engineers inEurope, making mutual efforts for its successful
completion by integrating technologies inmanufacturing the components in Japan and Europe.
Current lead

Cryostat

This is the device for introducing electric current into the superconducting coil.

A large, stainless steel structure
surrounding the vacuum vessel
and superconducting magnets,
providing a super-cool, vacuum
environment.

Toroidal Field Coils
Poloidal Field Coils

Superconducting coils for conﬁnementof the plasma.

Vacuum Vessel

A doughnut-shaped vacuum chamber
for production of high-purity plasma bymaintaining a stringent vacuum.

Diagnostics

Components for heat removal andexhaust of helium ash due to fusion
reaction and impurities.

Superconducting coils for plasma production,positioning and shaping.

Radio- Frequency ResonanceHeating System

Plasma heating device using electromagnetic
waves in the electron cyclotron wave range.

Power Supply

This equipment supplies
electricity to the equipment.

Plasma(doughnut-shaped)

16 m

Cryogenic System

This equipment cools thesuperconducting coil.

12m
High heat-ﬂux components

Neutral Beam Injector

Plasma heating device using high energy neutral beams.

In-vessel Components

For control of high pressure plasma:・Passive stabilization by the surrounding conducting wall (stabilizing plates).
・Active stabilization using a wide variety of coils which produce oﬀsetting
magnetic ﬁelds based on detected plasma instabilities.

Divertor

Components for heat removaland exhaust of helium ash due tofusion reaction and impurities.

Particle exhaust3March 2019
JT-60SAFirst plasmaファーストプラズマMay 2014
Assembly of thevacuum vessel
startedJanuary 2014
Temporary installation ofequilibrium field coils
January 2013
Assembly of
JT-60SA started

October 2012
Disassembly of
JT-60 completed

October 2009
Disassembly of
JT-60 started

Evolution of manufacturing JT-60SA

4JT-60SA cutting-edge

Checking the tip end of the pancake coil

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JT-60SA cutting-edge

Suspending the vacuum vessel (40 degree-sector)

Working inside the vacuum vessel

6JT-60SA cutting-edge

Adjusting the two-frequency gyrotron using for heating the plasma7JT-60SA cutting-edge

Adjusting the testing device of the negative-ion source for heating the plasma

Operating the negative-ion source testing device

8JT-60SA cutting-edge

JT-60SA under construction, seen from above

9JT-60SA and the future of nuclear fusion
International collaboration among
various countries and regions
The JT-60SA project is a joint scheme,combining the“Satellite Tokamak Program”and thenational program.
We are consolidating the views of the fusion community
in Japan, and making them contribute to thediscussions between Japan and Europe.

Naka Fusion InstituteDomestic community

EU-Japan Technical Coordination

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ITER

DEMO reactor
Contribution to the DEMO reactor
Based on the results of the predecessor
JT-60, JT-60SA will give full support to
ITER and contribute to the realizationof a continuously operational andeconomically attractive demonstration
reactor with the development of human

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JT-60

JT-60SA

resources such as researchers andengineers who will take the lead in thenext generation.

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Hello everyone, this is JT-60SA

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Evolution of manufacturing JT-60SA

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JT-60SA cutting-edge

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JT-60SA and the future of nuclear fusion

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The photo on the front cover page is a zoomed-in photo of theone shown above, which shows a superconducting equilibrium
field coils temporarily installed on the cryostat base.

graph JAEA
October 2014, No.4
Public Relations Department, Japan Atomic Energy Agency
Muramatsu 4-49, Tokai-muraNaka-gun, Ibaraki Prefecture
Postal code: 319-1184
Telephone: 029-282-0749