Saturnus: the UCLA high-gain infrared FEL project

• Published in: Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Vol. 304; no. 1; pp. 155 - 158
• Main Authors: Aghamir, F., Barletta, W.A., Cline, D.B., Dodd, J.W., Hartman, S.C., Katsouleas, T.C., Kolonko, J., Park, S., Pellegrini, C., Terrien, J.-C., Davis, J.G., Joshi, C.J., Luhmann, N.C., McDermott, D.B., Ivanchenkov, S.N., Lachin, Yu, Varfolomeev, A.A.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.07.1991
• ISSN: 0168-9002; 1872-9576
• DOI: 10.1016/0168-9002(91)90839-I

We present the status of Saturnus: an infrared FEL operating in the 10 μm wavelength region, driven by a compact 20 MeV linac with a photoinjector, under construction at UCLA. The 1.5 cm period, 0.5 T peak-field undulator is being built at the Kurchatov IAE. The FEL is being designed to operate primarily in the self-amplified spontaneous emission mode. We plan to study the startup from noise, optical guiding, saturation, sidebands and superradiance, with emphasis on the effects important for future short-wavelength operation of FELs. The photoinjector follows closely the Brookhaven design. Electrons are injected into an accelerating section based on the plane-wave transformer design developed by Swenson at SAIC. Simulation of the linac and FEL show a gain length of 10 cm, and saturation power of 50 MW.