Numerical modeling of a high power terahertz source at Shanghai

TL;DR

This paper presents the design and numerical modeling of a high-power terahertz source based on an energy-recovery linac at Shanghai, featuring two free electron laser oscillators for applications in material and biological sciences.

Contribution

It introduces a novel high-power THz source with detailed physical design and numerical analysis of two FEL oscillators operating in different frequency ranges.

Findings

Successful numerical modeling of THz oscillator performance.

Analysis of detuning effects and tolerance requirements.

Design parameters for high-power THz generation.

Abstract

On the basis of an energy-recovery linac, a terahertz (THz) source with kilowatts average power is proposed in Shanghai, which will serve as an effective tool in material and biological sciences. In this paper, the physical design of two free electron laser (FEL) oscillators, in the frequency range of 2~10THz and 0.5~2THz respectively, are presented. By using three dimensional, time-dependent numerical modeling of GENESIS in combination with paraxial optical propagation code (OPC), the THz oscillator performances, the detuning effects, and the tolerance requirements on the electron beam, the undulator filed and the cavity alignment are given.