A modern plasma controller tested on the TCV tokamak

A high-order, multivariable, modern plasma controller has been designed usi ng H-infinity optimal control techniques and tested oil the Tokamak Configu ration Variable (TCV) tokamak. An initial design for the control of the pla sma current, position, and shape parameters is described. The design proces s was based on the CREATE-L linearized model of TCV, and the controller was implemented oil a digital processor. The results demonstrated that the req uired performance was delivered and the controller response was in good agr eement with predictions using the model.