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Title: Effect of an angular trajectory kick in a high-gain free-electron laser

Journal Article · · Physical Review Accelerators and Beams
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In a free-electron laser, a transverse momentum offset (or “kick”) results in an oscillation of the centroid of the electron beam about the undulator axis. Studying the influence of this effect on the free-electron laser (FEL) interaction is important both from a tolerance point of view and for its potential diagnostic applications. In this paper, we present a self-consistent theoretical analysis of a high-gain FEL driven by such a “kicked” beam. In particular, we derive a solution to the three-dimensional, linearized initial value problem of the FEL through an orthogonal expansion technique and also describe a variational method for calculating the average FEL growth rate. Lastly, our results are benchmarked with genesis simulations and provide a robust theoretical background for a comparison with previous analytical results.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1352100
Alternate ID(s):
OSTI ID: 1360911
Journal Information:
Physical Review Accelerators and Beams, Journal Name: Physical Review Accelerators and Beams Vol. 20 Journal Issue: 4; ISSN 2469-9888
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 3 works
Citation information provided by
Web of Science

References (12)

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Collective instabilities and high-gain regime in a free electron laser journal July 1984
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  • Tanaka, T.; Kitamura, H.; Shintake, T.
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journal August 2004
A compact X-ray free-electron laser emitting in the sub-ångström region journal June 2012
Review of x-ray free-electron laser theory journal March 2007
Polarization control in an X-ray free-electron laser journal May 2016
First lasing and operation of an ångstrom-wavelength free-electron laser journal August 2010
Highly coherent and stable pulses from the FERMI seeded free-electron laser in the extreme ultraviolet journal September 2012
GENESIS 1.3: a fully 3D time-dependent FEL simulation code journal June 1999
Analysis of radiation focusing and steering in the free-electron laser by use of a source-dependent expansion technique journal September 1987
General method for analyzing three-dimensional effects in free-electron laser amplifiers journal January 2013
High gain free electron lasers driven by flat electron beam journal July 2003

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