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FEL 1992 14th

Name: FEL 1992 14th

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Date: 1992-01-01

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Created at: Fri Jul 27 23:53:34 -0700 2007

Updated at: Fri Jul 27 23:53:34 -0700 2007

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2 papers from the conference:

title: The UCLA IR FEL project
format: conference proceeding
conference: FEL 1992 14th
year: 1993
21 authors: G. Baranov | N. Barov | P. Davis | M. Fauver | B. Gitter | G. Hairapetian | S. Hartman | M. Hogan | S. Ivanchenkov | C. Joshi | A. Khlebnikov | P. Kwok | N. Luhmann | S. Park | C. Pellegrini | J.B. Rosenzweig | K. Schenk | Smolin, J. A. | P. Tran | G. Travish | A. A. Varfolomeev
abstract: A 10.6 mu m free electron laser (FEL) operating in the high gain regime is under construction at UCLA. FEL physics significant to future short wavelength operation is emphasized including optical guiding, superradiance, saturation and self-amplified spontaneous emission (SASE). A 5 MeV RF photocathode gun illuminated by a UV laser supplies a high brightness electron beam which is injected into a plane wave transformer (PWT) linac for acceleration to 20 MeV. Recent measurements of the gun emittance as well as quantum efficiency are presented. The undulator is of a modified hybrid design producing approximately 7.5 kG peak field on axis with 5 mm gap spacing and 1.5 cm pole period. Simulation results which include three-dimensional effects are furnished. The present status and future plans of the project are summarized. (16 References).
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title: A 2 to 4 nm high power FEL on the SLAC linac
format: conference proceeding
conference: FEL 1992 14th
year: 1993
13 authors: C. Pellegrini | J.B. Rosenzweig | Nuhn, H. D. | P. Pianetta | R. Tatchyn | H. Winick | Bane, K. | Morton, P. | T. Raubenheimer | J. Seeman | K. Halbach | K.J. Kim | Kirz, J.
abstract: The authors report the results of preliminary studies of a 2 to 4 nm SASE FEL, using a photoinjector to produce the electron beam, and the SLAC linac to accelerate it to an energy up to 10 GeV. Longitudinal bunch compression is used to increase ten fold the peak current to 2.5 kA, while reducing the bunch length to the subpicosecond range. The saturated output power is in the multi-gigawatt range, producing about 10/sup 14/ coherent photons within a bandwidth of about 0.2% r.m.s., in a pulse of several millijoules. At 120 Hz repetition rate the average power is about 1 W. The system is optimized for X-ray microscopy in the water window around 2 to 4 nm, and will permit imaging a biological sample in a single subpicosecond pulse. (21 References).
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