LINAC2026 - 33rd Linear Accelerator Conference

Design and simulation of a compact microtron for THz free-electron laser applications

Not scheduled

2h

Daejeon Convention Center

Poster Presentation MC2.A06: Other electron accelerators Poster Session

Speaker

geonwook park (Korea University of Science and Technology)

Description

A compact microtron accelerator has been developed as an electron source for a THz free-electron laser (FEL). The microtron scheme is adopted to realize a highly compact THz FEL system compared with conventional FEL facilities. The accelerator employs a 2.8 GHz magnetron with a peak power of 2.5 MW. In this work, the design and beam dynamics of the microtron are presented with emphasis on the pillbox-type cavity and electron beam transport characteristics. The cavity was designed to operate at the fundamental TM010 mode with optimized geometry for efficient RF coupling and stable beam acceleration. EM simulations were performed to evaluate the resonant frequency, quality factor, field distribution, and shunt impedance of the cavity. In addition, beam dynamics simulations were carried out to investigate electron bunch acceleration, phase stability, and transverse beam behavior within the microtron magnetic field configuration. The simulation results demonstrate stable electron acceleration and recirculation suitable for THz FEL applications. The designed microtron is expected to provide an efficient and compact accelerator platform for future THz radiation generation studies.results on RF cavity performance and beam dynamics will be presented.