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FEL 1994 16th

Name: FEL 1994 16th

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Date: 1994-01-01

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Created at: Fri Jul 27 23:53:35 -0700 2007

Updated at: Fri Jul 27 23:53:35 -0700 2007

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3 papers from the conference:

title: Performance simulation and parameter optimization for high gain short wavelength FEL amplifiers
format: conference proceeding
conference: FEL 1994 16th
year: 1995
1 author: G. Travish
abstract: The designers of short wavelength FELs must rely on theoretical and numerical predictions since no experimental data are available for this region. The numerical codes which have been developed, and are being used to design systems at SLAC, BNL, Duke, LBL, CEBAF, LANL and UCLA among others, contain our best theoretical understanding of these systems. This paper analyses the present simulation capabilities for short wavelength designs. We discuss how codes are used to design these new systems, which aspects of our models are well implemented and which are not, methods of verifying the models, comparison with experiment, and finally comments on extrapolating to short wavelengths. (26 References).
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title: The UCLA high gain infrared FEL
format: conference proceeding
conference: FEL 1994 16th
year: 1995
4 authors: G. Travish | M. Hogan | C. Pellegrini | J.B. Rosenzweig
abstract: The particle beam physics laboratory (PBPL) at UCLA is constructing a short period FEL which will operate in the high gain regime. The focus of the work has been the production of a high brightness electron beam suitable for short wavelength FELs. Once operational the FEL will be used to study phenomena of significance to short wavelength devices such as SASE and performance sensitivity to various beam parameters. Future studies may include the addition of a second undulator or amplification of an input source (CO/sub 2/ laser) to study saturation, superradiance, and optical guiding. (11 References).
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title: Parametric study of an X-ray FEL
format: conference proceeding
conference: FEL 1994 16th
year: 1995
7 authors: G. Travish | W. M. Fawley | K. J. Kim | H. D. Nuhn | C. Pellegrini | H. Winick | M. Xie
abstract: An FEL utilizing a high energy, high current and low emittance beam to produce radiation shorter than 2 angstroms is investigated in this paper. This device is an extension of the previously proposed 40 AA Linac Coherent Light Source based on the Stanford linear accelerator. Here we investigate the performance characteristics and parameter sensitivities of this single pass, high gain FEL amplifier operating by self-amplified spontaneous emission (SASE). We begin by comparing various approaches to this short wavelength source and justify our choice of a helical undulator operating on the fundamental frequency. Numerical simulations as well as extensions of previous studies are used to show performance as a function of undulator parameters, startup noise, emittance, focusing, current and energy spread. Further studies and parameter modifications are proposed where needed.
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