Electron beam simulator for high-current beam compression toward heavy-ion inertial confinement fusion

This paper introduced the characteristics of particle beam required for heavy ion inertial fusion, beam compression, beam physics to be noticed in the final stage pulse compression process, and simulation experiments using electrons. It also described the concept of the scaling experiment of large current beam compression in stationary system using a compact electron beam accelerator that performs velocity modulation at an induced potential superimposition device and also using Malmberg-Penning trap, as well as the initial experimental results. In the Malmberg-Penning trap that captures non-neutral plasma, beam dynamics can be studied in detail in a stationary system. The use of electron beams, whose mass is smaller and whose specific charge is extremely larger compared with heavy ions, may enable the simulation in a wide parameter range of beam physics, which is a problem inside a large ion accelerator, using a simple apparatus that was scaled down significantly. (A.O.)