Simulations of the 100kW TJNAF FEL using a step-tapered undulator

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Authors
Blau, J.
Bouras, V.
Colson, W.B.
Subjects
Free-electron-laser
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Date of Issue
2002
Date
2002
Publisher
Elsevier Science
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Abstract
The Thomas Jefferson National Accelerator Facility (TJNAF) free electron laser (FEL) can be upgraded to operate at 100 kW average power in the near future using a configuration that recirculates the electron beam to recover energy. It is important to extract the maximum energy from the electron beam in a pass through the undulator while inducing the minimum amount of exhaust energy spread. A larger energy extraction reduces the requirement for a large recirculating current, while a smaller exhaust energy spread allows the intense electron beam to be recirculated without damaging components. To improve FEL performance, we explore the use of the step-tapered undulator, which alters the resonance condition halfway through the undulator. Short pulses complicate the desired interaction. Comparisons are made to the conventional periodic and linearly-tapered undulators.
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Article
Description
Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 483 (1-2) : 138, 2002
The article of record may be found at https://doi.org/10.1016/S0168-9002(02)00299-1
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https://hdl.handle.net/10945/64723
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Physics
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4 p.
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Simulations of the 100kW TJNAF FEL using a step-tapered undulator; J. Blau, V. Bouras, W.B. Colson, et al.; Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 483 (1-2) : 138, 2002; [PDF] [References & Citations]
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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