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van der Geer, B.; de Loos, M.J.; Conde, M.E.; Leemans, W.P.
Lawrence Berkeley Lab., CA (United States). Funding organisation: USDOE, Washington, DC (United States)1994
Lawrence Berkeley Lab., CA (United States). Funding organisation: USDOE, Washington, DC (United States)1994
AbstractAbstract
[en] Wavelength and power stability of the Stanford infrared SCA/FEL operating with the TRW wiggler have been measured using a high-resolution spectrometer and an image dissector system. The image dissector is capable of reading the spectrum of every single micropulse at 12 MHz throughout a macropulse of up to 2 ms duration. The intrinsic wavelength and power stability of the SCA/FEL are found to be δλ/λ=0.035% and δP/P=18%. The use of a feedback control system to stabilize the wavelength, and an acousto-optic modulator for output power smoothing, improves the performance to δλ/λ=0.012% and δP/P=7%
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Aug 1994; 8 p; 16. international free electron laser conference; Stanford, CA (United States); 21-26 Aug 1994; CBP--103; CONF-9408146--11; CONTRACT AC03-76SF00098; Also available from OSTI as DE95002334; NTIS; US Govt. Printing Office Dep
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