The Influence of High Frequency System of Standing Wave Electron Linear Accelerator on Beamoutput Properties

This article discusses high-frequency systems of standing wave linear electron accelerator. One of the drawbacks of standing wave accelerators is extended transient process in high-Q resonator sections, which leads to insufficient beam energy at initial stage of high frequency pulse and occurrence of medium energy spread of clusters. This spread can be eliminated by power supply of accelerator sections and delay of injection pulse with regard to the pulse of high frequency field. This enables fine tuning of high-frequency energy supplied to accelerating resonator sections upon simultaneous variation of time constant of transient process of electric fields setup in sections. In these systems complete decoupling of generator from high-Q accelerating sections is achieved, the influence of current load by accelerating sections decreases, and beam output properties are improved.