skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: The free electron laser with inverse taper

Abstract

The undulator design determines the physics of the free electron laser interaction. In the tapered undulator, the resonant electron energy decreases along the undulator length in order to enhance gain and efficiency in strong optical fields. With inverse taper, the resonant electron energy increases along the undulator length. Surprisingly, gain and efficiency are also increased in strong optical fields. In addition, the resultant electron beam energy spread is decreased compared to both the tapered and untapered undulator. A reduction of the final electron beam energy spread is useful when recirculating the beam current as in the Jefferson Lab FEL.

Authors:
;
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility, Newport News, VA (US)
Sponsoring Org.:
USDOE Office of Energy Research (ER) (US)
OSTI Identifier:
796072
Report Number(s):
JLAB-ACT-00-13; DOE/ER/40150-2100
TRN: US0201429
DOE Contract Number:  
AC05-84ER40150
Resource Type:
Journal Article
Journal Name:
Nuclear Instruments and Methods in Physics Research A
Additional Journal Information:
Journal Volume: 445; Journal Issue: 1-3; Other Information: PBD: 1 May 2000
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; BEAM CURRENTS; DESIGN; EFFICIENCY; ELECTRON BEAMS; ELECTRONS; FREE ELECTRON LASERS; PHYSICS; WIGGLER MAGNETS

Citation Formats

W.B. Colson, and R.D. McGinnis. The free electron laser with inverse taper. United States: N. p., 2000. Web.
W.B. Colson, & R.D. McGinnis. The free electron laser with inverse taper. United States.
W.B. Colson, and R.D. McGinnis. Mon . "The free electron laser with inverse taper". United States.
@article{osti_796072,
title = {The free electron laser with inverse taper},
author = {W.B. Colson and R.D. McGinnis},
abstractNote = {The undulator design determines the physics of the free electron laser interaction. In the tapered undulator, the resonant electron energy decreases along the undulator length in order to enhance gain and efficiency in strong optical fields. With inverse taper, the resonant electron energy increases along the undulator length. Surprisingly, gain and efficiency are also increased in strong optical fields. In addition, the resultant electron beam energy spread is decreased compared to both the tapered and untapered undulator. A reduction of the final electron beam energy spread is useful when recirculating the beam current as in the Jefferson Lab FEL.},
doi = {},
journal = {Nuclear Instruments and Methods in Physics Research A},
number = 1-3,
volume = 445,
place = {United States},
year = {2000},
month = {5}
}