A. Zako et al., A HYBRID TYPE UNDULATOR FOR FAR-INFRARED FELS AT THE FELI, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 375(1-3), 1996, pp. 80-82
The development of a new type undulator is in progress. This undulator
will cover the far infrared (20-60 mu m) region. It is a unique hybri
d type one with electro- and permanent (Sm-Co)-magnets. This report de
scribes our undulator plan, its structure and the preliminary experime
nt on the trial model of the undulator.