Simulations of the proposed TJNAF 100kW free electron laser and comparison with TJNAF low power experiments

One transitional step for the development of a 1 MW power directed energy weapon is the proposed l00 kW upgrade of the Thomas Jefferson National Accelerator FacilityÎ±s Free Electron Laser (FEL). To improve the performance of the FEL, the use of the step-taper undulator is explored. Steady-state gai...

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Main Author:	Polykandriotis, Konstantinos
Other Authors:	Colson, William B.
Format:	Others
Published:	Monterey, California. Naval Postgraduate School 2012
Online Access:	http://hdl.handle.net/10945/1024

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spelling	ndltd-nps.edu-oai-calhoun.nps.edu-10945-10242017-05-24T16:06:41Z Simulations of the proposed TJNAF 100kW free electron laser and comparison with TJNAF low power experiments Polykandriotis, Konstantinos Colson, William B. Armstead, Robert L. Applied Physics One transitional step for the development of a 1 MW power directed energy weapon is the proposed l00 kW upgrade of the Thomas Jefferson National Accelerator FacilityÎ±s Free Electron Laser (FEL). To improve the performance of the FEL, the use of the step-taper undulator is explored. Steady-state gain, final steady-state power, and the induced electron spread as a function of desynchronism and taper rates are determined. Comparisons are made to the conventional periodic and linearly tapered undulators. The multimode simulations used showed that the TJNAF 100kW FEL is feasible. Simulations results with Q =10 show that the inverse step -taper undulator D = -p achieved the highest final power of 190 kW at a desynchronism value of d = 0.01, while maintaining the induced energy spread well below the engineering limit. The validity of our results is verified against experiments conducted in the TJNAF FEL facility. The simulations and the experimental data are in good agreement and consistent with analytic theory. Hellenic Air Force author 2012-03-14T17:30:17Z 2012-03-14T17:30:17Z 2001-12 Thesis http://hdl.handle.net/10945/1024 640959336 This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. As such, it is in the public domain, and under the provisions of Title 17, United States Code, Section 105, may not be copyrighted. xviii, 81 p. ; application/pdf Monterey, California. Naval Postgraduate School
collection	NDLTD
format	Others
sources	NDLTD
description	One transitional step for the development of a 1 MW power directed energy weapon is the proposed l00 kW upgrade of the Thomas Jefferson National Accelerator FacilityÎ±s Free Electron Laser (FEL). To improve the performance of the FEL, the use of the step-taper undulator is explored. Steady-state gain, final steady-state power, and the induced electron spread as a function of desynchronism and taper rates are determined. Comparisons are made to the conventional periodic and linearly tapered undulators. The multimode simulations used showed that the TJNAF 100kW FEL is feasible. Simulations results with Q =10 show that the inverse step -taper undulator D = -p achieved the highest final power of 190 kW at a desynchronism value of d = 0.01, while maintaining the induced energy spread well below the engineering limit. The validity of our results is verified against experiments conducted in the TJNAF FEL facility. The simulations and the experimental data are in good agreement and consistent with analytic theory. === Hellenic Air Force author
author2	Colson, William B.
author_facet	Colson, William B. Polykandriotis, Konstantinos
author	Polykandriotis, Konstantinos
spellingShingle	Polykandriotis, Konstantinos Simulations of the proposed TJNAF 100kW free electron laser and comparison with TJNAF low power experiments
author_sort	Polykandriotis, Konstantinos
title	Simulations of the proposed TJNAF 100kW free electron laser and comparison with TJNAF low power experiments
title_short	Simulations of the proposed TJNAF 100kW free electron laser and comparison with TJNAF low power experiments
title_full	Simulations of the proposed TJNAF 100kW free electron laser and comparison with TJNAF low power experiments
title_fullStr	Simulations of the proposed TJNAF 100kW free electron laser and comparison with TJNAF low power experiments
title_full_unstemmed	Simulations of the proposed TJNAF 100kW free electron laser and comparison with TJNAF low power experiments
title_sort	simulations of the proposed tjnaf 100kw free electron laser and comparison with tjnaf low power experiments
publisher	Monterey, California. Naval Postgraduate School
publishDate	2012
url	http://hdl.handle.net/10945/1024
work_keys_str_mv	AT polykandriotiskonstantinos simulationsoftheproposedtjnaf100kwfreeelectronlaserandcomparisonwithtjnaflowpowerexperiments
_version_	1718452360741650432

Simulations of the proposed TJNAF 100kW free electron laser and comparison with TJNAF low power experiments

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