High Power Klystrons for High Energy Physics Research Applications

Klystrons have, due to the adaptability of their basic design concept to a large spread of requirements regarding operating frequency, output power level and modes of operation, become the predominant source of microwave power in accelerator and fusion reactor applications. In close cooperation between tube industry and users a spectrum of klystron types covering the frequency range of 200 to 3000 MHz for CW- and pulsed operation has been created to meet these requirements. A selective describtion of the Philips/Valvo activity in this field is given emphasising development issues of CW-types with high unit power and high efficiency.