All-the-World's Tokamaks

An extensive list of current and historic tokamaks from around the world.
Specifications of 226 machines are given on this site
(of which perhaps 50 are operating today).


Please update your bookmarks to go to the domain which has remained unchanged even though the hosting location moved. After the move a lot of the links were broken but hopefully most are now fixed.

This site has been running since November 2006 thanks to the input from many people in the fusion community. (Sorry it looks so old-fashioned!)

Photo Gallery
External views

Follow this link to the
companion site

The Famous Tokamak Poster

Follow this link to the
companion site

Photo Gallery
Internal views and plasma photos

Follow this link to the
companion site

Table of
conventional tokamaks

Download a printable colour version of this table in pdf format - Last updated September 2015.

Examine trends in
aspect ratios
over the decades.

Visit the new companion site,

All-the-World's Tokamaks - extras

for additional content.

Table of
spherical tokamaks

Download a printable colour version of this table in pdf format - Last updated April 2015.

Decide for yourself!
Is this really a separate family of tokamaks or not?


Links and Movies

and a

World Map

of tokamaks that are currently operating (thanks to Joanne Flanagan).

World Records

What is a tokamak?  How many tokamaks have been built?  Which is the 'best' tokamak in the world? Do they really promise to be an answer to the world's energy problems? Are they dangerous?  Why haven't they proved themselves yet?

This site does not promise to answer all these questions, as the issues are covered in the many official web-sites that you will find by following links that I provide.  It is more of a hobby for the author, Nick Balshaw (who happens to work in fusion research) and a reference site for others who work in this field.  In no way does it pretend to represent the views of any other organisation (particularly of my employer) or describe fusion research to the general public. At the moment it contains information on "All-the-World's Tokamaks" - or in other words "Tokamaks from all over the world". Ultimately it would be nice to include "ALL of the world's Tokamaks". Please help!   Your feedback will help me to improve the content of the site. (Apologies that I don't update the site as often as I would like to but the updates usually get here in the end.)

These pages cover 'conventional' tokamaks in more detail because this is currently the most mature technological approach, and the one that will be used for ITER. There is also information about 'spherical' tokamaks in a separate table because the important parameters are slightly different. In due course, spherical tokamaks might take the lead. Other promising lines of research, the 'stellarators' and "pinches", are not included except in cases of machines which have also operated in tokamak configuration. Plasma focus devices are also not covered.

(but some other pages may be newer)

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