Speaker
Description
We review the main types of RF power amplifiers used for particle accelerators.
It covers vacuum beam tubes, specifically gridded tubes, including tetrodes, inductive output tubes, klystrons, and transistor amplifiers, with power outputs greater than 10 kW CW or 100 kW pulsed at frequencies from 50 MHz to 1 GHz.
Functioning principle and construction aspects of these various items are presented.
Factors affecting the satisfactory operation of amplifiers, including cooling, matching, and protection circuits, are discussed.
We also review the techniques of transport of high-power radiofrequency power from a RF power source to the cavities of an accelerator.
Waveguide and coaxial lines are explained showing power limits.
Main power couplers are also explained, on the construction side of it.