Characteristics Analysis of the Electron Linear Accelerator with Dual Energy Switching and Magnetron-Based Power Supply

The creation of accelerators for the inspection of large objects during their transportation across state borders is an important task. To obtain high-quality images of the inspected object internal composition, the accelerator must be able to do a dual switch of beam energy from pulse to pulse [1]. A number of works are devoted to solving this problem, describing methods and real facilities with dual energy switch [2–5]. The energy switch is achieved by a stepwise change in the input power of the accelerating section and/or the magnitude of the accelerated current. In order to provide the necessary energy and beam current in high and low energy modes, the accelerating section parameters must be carefully tuned. This article compares two power supply schemes of a two-section linac with energy switch due to disconnection of one of the sections using circulators and bridges.