Progress Report On The Beijing FEL Project

Abstract

The progress of the Beijing IR-FEL project carried out at IHEP is reported. Some specific developments of software and hardware are described, rather than striving for general coverage. First, computational studies of the effects of emittance and pulse length on the small-signal gain are presented. Then some experimental results for the microwave electron gun injector are given. Modifications of the beam transport system and the optimization and measurements of the NdFeB undulator are described. Finally, some aspects of the beam diagnostics and a spontaneous-emission experiment are discussed.