We describe a procedure for the simulation of free-electron-laser (FEL) oscillators. The simulation uses a combination of the MEDUSA simulation code for the FEL interaction and the OPC code to model the resonator. The simulations are compared with recent observations of the oscillator at the Thomas Jefferson National Accelerator Facility and are in substantial agreement with the experiment.
van der Slot, P. J. M., Freund, H. P., Miner Jr., W. H., Benson, S. V., Shinn, M., & Boller, K. J. (2009). Time-Dependent, Three-Dimensional Simulation of Free-Electron-Laser Oscillators. Physical review letters, 102(244802), 244802-1-244802-4. https://doi.org/10.1103/PhysRevLett.102.244802