Multidimensional simulation studies of the SELENE FEL oscillator/buncher followed by a radiator/amplifier output scheme

S. J. Hahn; William M. Fawley

doi:10.1117/12.208198

26 April 1995 Multidimensional simulation studies of the SELENE FEL oscillator/buncher followed by a radiator/amplifier output scheme

S. J. Hahn, William M. Fawley

Author Affiliations +

Proceedings Volume 2376, Laser Power Beaming II; (1995) https://doi.org/10.1117/12.208198
Event: Photonics West '95, 1995, San Jose, CA, United States

Abstract

We analyze and present numerical simulations of the so-called electron output scheme applied to the SELENE proposal of using a high power FEL to illuminate satellite solar cells. In this scheme, a first stage FEL oscillator bunches the electron beam while a second stage `radiator' extracts high power radiation. Our analysis suggests only in the case where the radiator employs a long, tapered undulator will the electron output scheme produce a significant increase in extraction efficiency over what is obtainable from a simple, single-stage oscillator, 1- and 2-D numerical simulations of a 1.7 micrometers FEL employing the electron output scheme show that large bunching fractions at the output of the oscillator stage but only approximately 1% extraction efficiency from the radiator stage.

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S. J. Hahn and William M. Fawley "Multidimensional simulation studies of the SELENE FEL oscillator/buncher followed by a radiator/amplifier output scheme", Proc. SPIE 2376, Laser Power Beaming II, (26 April 1995); https://doi.org/10.1117/12.208198

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