The JT-60SA device


What is JT-60SA?

JT-60SA is a fusion experiment designed to support the operation of ITER and to investigate how best to optimise the operation of fusion power plants that are built after ITER. It is a joint international research and development project involving Japan and Europe, and is to be built in Naka, Japan using infrastructure of the existing JT-60 Upgrade experiment. SA stands for "super, advanced", since the experiment will have superconducting coils and study advanced modes of plasma operation. Further details of its experimental programme are explained in the JT-60SA Research Plan.

What is fusion?

Fusion is the energy source of the sun and the stars. On earth, fusion research is aimed at demonstrating that this energy source can be used to produce electricity in a safe and environmentally benign way, with abundant fuel resources, to meet the needs of a growing world population.

What's New

July 2018 Newsletter released

July 17, 2018
This edition reports on completion of installation of the 18 toroidal field coils, the installation activities of the magnet power supplies, completion of the last central solenoid module, the 22nd STP Project Committee Meeting, the 22nd BA Steering Committee Meeting, the 5th IAEA DEMO Programme Workshop, and the design review meeting for Fast Wide Angle Video Diagnostic System. Read more

Newsletter No. 100 - celebratory issue released

May 31, 2018
Let's celebrate together the achievements the newsletter has reflected over the last 8 years. Read more

March 2018 Newsletter released

April 04, 2018
This edition reports on delivery of the last two toroidal field coils by air and their arrival at the Naka site, progress of the cryoline installation, visitors at the QST Naka site, update of the JT-60SA contributor panels, and the 29th Technical Coordination Meeting. Read more

February 2018 Newsletter released

March 14, 2018
This edition reports on the completion of the toroidal field coil casing production, and of the first Italian spare toroidal field coil, progress of the tokamak assembly, arrival of the cryostat vessel body cylindrical section in Japan, delivery of the coil terminal box 04 and 05 to the Naka site, and the 21st Broader Approach Steering Committee Meeting. Read more

Coils reach jet speed

February 22, 2018
First plasma in 2020 is a tough target for the JT-60SA team, and it can't be achieved without a full set of toroidal field coils. After battling technical problems and supply chain challenges, the magnet team needed to save time to avoid disrupting the tokamak assembly - so it was decided to send the last two coils to Japan by air (video copyright QST/niconico) See interview

January 2018 Newsletter released

February 8, 2018
This edition reports on the arrival of the remaining ENEA superconducting magnet power supplies and the 13th toroidal field coil at the Naka site, the last French toroidal field coil, updates of large current feeder construction, design review meeting for the ENEA superconducting magnet power supplies, and the 26th International Toki Conference and 11th Asia Plasma and Fusion Association Conference. Read more

December 2017 Newsletter released

January 8, 2018
This edition reports on completion of the high temperature superconductor current lead procurement, departure of the cryostat vessel body cylindrical section to Japan, pre-assembly of the final vacuum vessel sector, positioning of the magnet controller, delivery of all quench detectors, and the visit of professionals at QST Naka site. Read more

November 2017 Newsletter released

December 4, 2017
This edition reports on successful type tests of the resistive wall mode control coil power supply prototype, progress on the cryoline installation, start of ENEA power supply installation, visit of VIPs at QST Naka site, the 13th International Symposium on Fusion Nuclear Technology, and the 21st Project Committee Meeting. Read more

October 2017 Newsletter released

November 2, 2017
This edition reports on first operation of the cryogenic system by the QST operation team, start of the cryoline installation, completion of valve boxes and their delivery to Naka, visit of VIPs at QST Naka site, the extension of divertor integrated codes for multi-impurity simulation, the 25th International Conference on Magnet Technology, and the 13th European Conference on Applied Superconductivity. Read more


JT-60SA iBook


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