Study on Multiple Physical Fields of S-Band Klystron Collector

High-power klystron plays an irreplaceable role in high-energy particle accelerators, broadband radar systems, and other systems. It is an irreplaceable high-frequency excitation source. Among them, the design of the electronic optical system and the design of the collector cooling structure are the most important technical difficulties. The thermal and structural forces of the klystron collector are analyzed in detail by the finite element method. The temperature is up to 300 degrees, and the thermal expansion is up to 1 mm, within the normal range. The stability of the structure under the interaction of thermal field and mechanical physical field is verified. Thus, the continuous output of high-frequency energy emitted by the electron gun is ensured. The research works could promote the development of new ideas and schemes of high-power klystron collectors.