The present invention discloses a frequency-tunable terahertz
gyrotron collector, which belongs to the technical field of terahertz electric vacuum devices and relates to
electron cyclotron maser devices. This structure is used for a frequency-tunable terahertz
gyrotron developed in a laboratory, and is a component that collects residual electrons and dissipates
electron energy in a water-cooling manner. The collector is connected to the rear end of the
gyrotron interaction cavity, and includes a cylindrical hollow cavity and outer wall heat sinks. Each
heat sink is a straight rib structure and is located on the outer wall of the collector cylindrical cavity. The gaps between adjacent heat sinks serve as cooling water channels. The straight rib heat dissipation structure is combined with a water-cooling inlet. Through the design of a special collection stage structure, the heat exchange area between the collector and the
coolant is increased, the
water cooling efficiency is improved, and the collection stage temperature is reduced, thereby improving the stability of the gyrotron operation and ensuring the service life of the gyrotron.