Design of a multi-beam electron gun and cavity for a S-band power Klystron

In multi-beam Klystron (MBK), several electron beams are used to interact with the RF signal in a single interaction structure. MBK has a number of advantages over single beam klystron. As it uses several low perveance beams, for the same overall perveance, the beam voltage is substantially lower than single beam klystron for same RF output power.