Initial gain measurements of an 800 nm SASE FEL, VISA
نویسندگان
چکیده
The Visible to Infrared SASE Amplifier (VISA) FEL is designed to obtain high gain at a radiation wavelength of 800 nm. The FEL uses the high brightness electron beam of the Accelerator Test Facility (ATF), with energy of 72MeV. VISA uses a novel, 4m long, strong focusing undulator with a gap of 6mm and a period of 1.8 cm. To obtain large gain the beam and undulator axis have to be aligned to better than 5mm. Results from initial measurements on the alignment, gain, and spectrum will be presented and compared to theoretical calculations and simulations. r 2001 Elsevier Science B.V. All rights reserved. PACS: 41.60.Cr; 41.60.Ap
منابع مشابه
Status and initial commissioning of a high gain 800 nm SASE FEL
We describe the status and initial commissioning of the Visible to Infrared SASE Ampli"er (VISA) experiment. VISA uses a strong focusing 4 m undulator, the Brookhaven National Laboratory ATF linac with an energy of 72 MeV, and a photoinjector electron source. The VISA fundamental radiation wavelength is near 800 nm and the power expected at saturation is near 60 MW. Power, angular and spectral ...
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