Broken Records

Highest ion temperature in a fusion reactor

The current highest ion temperature in a fusion reactor record is 522 million K, held by JT-60U. Last checked October 14, 2026.

522

million K

JT-60U

Naka, Ibaraki, Japan

Holder
JT-60U
Record
522 million K
Exact figure
About 522 million K
Location
Naka, Ibaraki, Japan
Last checked
October 14, 2026

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