The Primary Design of the Ridgetron
  The ridgetron is used to accelerate the intense beam for the electron irradiation. According to the electromagnetic field simulation, the extend electrode should be cancelled to increase the shunt impedence. The method of parameter sweeping with constraint variables (PSCV) is used to scan the mechanical parameters of the cavity to optimize the shunt impedence. The thermal analysis also has been done for water cooling. The beam dynamic simulation has been done at last. 
Li Jinhai, Li Chunguang
physics.acc-ph