Abstract
A 10-m rare earth permanent magnet hybrid undulator1 called a near infrared scalable undulator system (NISUS) is under construction at Spectra Technology for use in the Boeing FEL program series. The design was optimized for operation at a 1-μm wavelength with the Boeing accelerator parameters. A remotely adjustable compound taper is utilized to achieve optimum startup gain and high saturated extraction. A summary of the relevant design parameters is listed in Table I. A major goal was to build NISUS from modules which would allow easy scaling to longer lengths without redesign. Prototype tests for verification of field strength and quality are complete as well as the delivery and Installation of the initial 5 m.
© 1989 Optical Society of America
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