Saturnus is an infrared FEL operating in the 10 $mu@m wavelength region, driven by a compact 20 MeV linac with a photoinjector, under construction at UCLA. The 1.5 cm period, 0.6 $Tau peak field undulator is being built at the Kurchatov IAE. The FEL is designed to operate primarily in the self-amplified spontaneous emission mode. This paper covers the start-up 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 a saturation power of 50 MW.
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机译：Saturnus是一种在10 $ MU @ M波长区域中运行的红外线，由紧凑型20 MeV LinaC与PhotoInjector在UCLA建设中驱动。在Kurchatov Iae建造了1.5厘米，0.6 $ Tau Peak Field Histulator。 FEL设计用于主要在自增强的自发发射模式下运行。本文涵盖了噪声，光学引导，饱和度，边带和超长率的启动，重点是对FELS的未来短波长的影响很重要。 PhotoInjector紧密遵循Brookhaven设计。基于Swenson在SAIC开发的平面波变压器设计的加速截面中注入电子。 LinaC和FEL的仿真显示出10厘米的增益长度，以及50mW的饱和功率。
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