INEX SIMULATIONS OF THE OPTICAL-PERFORMANCE OF THE AFEL

The AFEL (advanced free-electron laser) Project at Los Alamos National Laboratory is presently under construction. The project's goal is to produce a very high brightness electron beam which will be generated by a photocathode injector and a 20 MeV rf linac. Initial laser experiments will be performed with a 1 cm period permanent magnet wiggler which will generate intense optical radiation near a wavelength of 3.7-mu-m. Future experiments will operate with "slotted-tube" electromagnetic wigglers (formerly called "pulsed-wire" wigglers). Experiments at both fundamental and higher harmonic wavelengths are planned. This paper presents results of INEX (integrated numerical experiment) simulations of the optical performance of the AFEL. These simulations use the electron micropulse produced by the accelerator/beam transport code PARMELA in the 3-D FEL simulation code FELEX.