On the Synthesis of High-Efficiency CSM Klystrons by the «Embedding» Method

The bunching process, named Core Oscillation Method (COM), was presented in [1-3]. It provide to achieve the efficiency of klystrons about 90% by the optimization named «stage-by-stage» optimization. However, COM-bunching require the increasing of bunching length, so the increasing of klystron length. It of a significant problem for low-frequency klystrons. The Core Stabilization bunching Method (CSM) is proposed as a alternative bunching process, providing a high efficiency with decreased bunching length. Such kind of bunching requires the 2-nd and 3-rd harmonic cavities. For synthesis of high efficiency CSM klystrons, the «embedding» optimization method was proposed. CSM-klystrons, obtained by the embedding optimization method, proposed to achieve the efficiency about 90% with length decreased 2-3 times vs COM klystrons.