SUNIST, the abbreviation of Sino-UNIted Spherical Tokamak, is a small spherical tokamak in the Department of Engineering Physics, Tsinghua University, Beijing, China.


  • The main parameters of SUNIST 1
  • Current research activities 2
  • External links 3
  • References 4

The main parameters of SUNIST

Parameter Symbol Value
Major radius R 30 cm
Minor radius a 23 cm
Elongation ratio κ 1.6
On-axis magnetic field B0 1500 gauss (0.15 T)
Typical plasma current IP 30 kA

Current research activities

Alfven wave current drive experiments in spherical tokamak plasmas Alfven wave can generate toroidal plasma current without density limits. This is very favourable for spherical tokamak plasmas, which have very high dielectric constants that makes LHCD or ECCD very hard.

External links

  • SUNIST Laboratory


  • A Research Program of Spherical Tokamak in China
  • Initial Plasma Startup Test on SUNIST Spherical Tokamak
  • News about the construction of the SUNIST shperical tokamak (in Chinese)