학술논문
Simplified model for fast optimization of a free-electron laser oscillator
Document Type
article
Author
Source
Physical Review Accelerators and Beams, Vol 20, Iss 3, p 030702 (2017)
Subject
Language
English
ISSN
2469-9888
Abstract
A simplified one-dimensional theoretical model for free-electron laser oscillator (FELO) calculation which reserves the main physics is proposed. Instead of using traditional macroparticles sampling method, the theoretical model takes advantage of low gain theory to calculate the optical power single-pass gain in the undulator analytically, and some reasonable approximations are made to simplify the calculation of power growth in the cavity. The theoretical analysis of single-pass gain, power growth, time-dependent laser profile evolution and cavity desynchronism are accomplished more efficiently. We present the results of infrared wavelength FELO and X-ray FELO with the new model. The results are validated by simulation with GENESIS and OPC.