First spherical tokamak

2013

First spherical tokamak

First working prototype to validate approach

2015

ST25

Very low field use of high temperature superconducting magnets achieved plasma pulse of >29 hours

ST25 HTS record turnoff
2017 ST40 Highest field Spherical Tokamak constructed

2017

ST40

Highest field Spherical Tokamak constructed

2019

ST40

>15 million degrees

ST40 >15 million degrees
26.2T magnet Tokamak Energy

2020

26.2T magnet

Technology tested at CERN and published by CERN Courier

2022

ST40

World first to achieve 100 million degrees in a compact spherical tokamak

ST40 World first to achieve 100 million degrees in a compact spherical tokamak
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