TCV stands for ’Tokamak à Configuration Variable’, which means a tokamak with variable configuration.
TCV is unique from other tokamaks thanks to its 16 poloidal field coils (PFC), far more than other tokamaks. They allow physicists to obtain plasmas in very wide ranges of plasma shape parameters as well as in a large variety of configurations such as Snowflake and Super-X divertors on top of the more traditional single and double null divertors. In addition, the rectangular cross section of the vessel allows the installation of diverse divertor hardware such as baffles, which, combined with the high flexibility of plasma shape and configurations opens up multiple avenues of research.
Visit the TCV web site for detailed information.