JT-60

This article is about the tokamak. For the school district, see Miami-Yoder School District JT-60.
JT-60
Japan Torus-60
Device typeTokamak
LocationNaka, Ibaraki Prefecture, Japan
AffiliationJapan Atomic Energy Agency
Technical specifications
Major radius3.4 m (11 ft)
Minor radius1.0 m (3 ft 3 in)
Plasma volume90 m3
Magnetic field4 T (40,000 G) (toroidal)
Discharge duration65 s
History
Year(s) of operation1985–2010
Preceded byJFT-2M
Succeeded byJT-60SA
Related devicesTFTR
Links
Websitewww.qst.go.jp/site/jt60-english/
JT-60SA
Japan Torus-60 Super Advanced
Device typeTokamak
LocationNaka, Ibaraki Prefecture, Japan
AffiliationQST + F4E
Technical specifications
Discharge duration100 s
History
Date(s) of construction2013 - 2020
Year(s) of operation2023–present
Preceded byJT-60U
Related devicesITER
Links
Websitewww.jt60sa.org/wp/

JT-60 (short for Japan Torus-60) is a large research tokamak, the flagship of the Japanese National Institute for Quantum Science and Technology's fusion energy directorate. As of 2023 the device is known as JT-60SA and is the largest operational superconducting tokamak in the world,[1] built and operated jointly by the European Union and Japan in Naka, Ibaraki Prefecture.[2][3] SA stands for super advanced tokamak, including a D-shaped plasma cross-section, superconducting coils, and active feedback control.

As of 2018, JT-60 holds the record for the highest value of the fusion triple product achieved: 1.77×1028 K·s·m−3 = 1.53×1021 keV·s·m−3.[4][5] To date, JT-60 has the world record for the hottest ion temperature ever achieved (522 million °C); this record defeated the TFTR machine at Princeton in 1996.[6]

  1. ^ "First plasma 23 October". JT-60SA. 24 October 2023. Archived from the original on 27 October 2023. Retrieved 15 November 2023.
  2. ^ "What is JT-60SA?". JT-60SA. Archived from the original on 15 November 2023. Retrieved 15 November 2023.
  3. ^ "Naka Fusion Institute". www.naka.jaea.go.jp. Archived from the original on 1 July 2007. Retrieved 14 January 2022.
  4. ^ "JT-60 HOME PAGE". Japan Atomic Energy Agency. Archived from the original on 25 April 2021. Retrieved 25 April 2021.
  5. ^ JT-60 Operational History and the Progress of Plasma Performance Archived 2016-02-23 at the Wayback Machine
  6. ^ "Plasma physics found in JT-60 tokamak over the last 20 years". Archived from the original on 2021-01-21. Retrieved 2020-12-19.