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Conventional Tokamaks

The following incomplete and possibly unreliable table gives a summary of 183 tokamaks, their dimensions and special features, with links to appropriate web sites wherever possible.  See the key below the table to understand the colour coding. Use the data only for broad comparison purposes and remember to check more reliable sources if it is important.  The data in the table has not been thoroughly refereed but I am pleased to have received feeback from many helpful people and welcome more. Please contact me if you think there are significant errors or omissions, with evidence to support your claim.

Spherical tokamaks are not included in this table because the important parameters are slightly different. There is a separate page on this site for these machines.

Most of this page is derived from personal contacts, publications and web sites.  Please regard the data as being the "optimum" performance of each aspect of each machine rather than the current or typical performance.  Throughout the life of any machine the focus of attention will change.  For example, at one stage the experiments may be designed to maximise the pulse length, whereas in another phase the emphasis may be on maximising heating power.  The two phases would be incompatible.


Download a printable colour version of this table in pdf format - it may not be as up-to-date as the html table below. (Best printed at A3.)


Key to colour codes and abbreviations

Currently operating


DNB: Diagnostic Neutral Beam.  ECH: Electron Cyclotron Resonance Heating. FW: Fast Wave. IB: Ion Bernstein Wave.  ICH: Ion Cyclotron heating.  IP: Max plasma current.  LH: Lower Hybrid Current Drive.  OH: Ohmic Heating.  NBI: Neutral Beam Injection. SC: Superconducting.  TF: Toroidal Field. SMBI: Supersonic Molecular Beam Injection.
"y" means yes, but that no details have been obtained. 
Blank boxes - not known.
Copyright acknowledged  Photo of exterior, or other illustration.     Copyright acknowledged   Photo of interior.

Under construction
Proposed or planned.
Currently not operating
Unknown status
Decommissioned (or not built)

There have been some other machines for which no information is yet included. The table will probably continue to grow. Note again that spherical tokamaks are not included in this table but on a separate page.

In particular, I would like to find more information for the following machines: ENCORE; MPB; MPTX. I have some information about each of these machines, but not enough to add a row to the table above.

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