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Title: Modulated method for efficient, narrow-bandwidth, laser Compton X-ray and gamma-ray sources

Abstract

A method of x-ray and gamma-ray generation via laser Compton scattering uses the interaction of a specially-formatted, highly modulated, long duration, laser pulse with a high-frequency train of high-brightness electron bunches to both create narrow bandwidth x-ray and gamma-ray sources and significantly increase the laser to Compton photon conversion efficiency.

Inventors:
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1369038
Patent Number(s):
9,706,631
Application Number:
14/274,348
Assignee:
Lawrence Livermore National Security, LLC LLNL
DOE Contract Number:
AC52-07NA27344
Resource Type:
Patent
Resource Relation:
Patent File Date: 2014 May 09
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Barty, Christopher P. J.. Modulated method for efficient, narrow-bandwidth, laser Compton X-ray and gamma-ray sources. United States: N. p., 2017. Web.
Barty, Christopher P. J.. Modulated method for efficient, narrow-bandwidth, laser Compton X-ray and gamma-ray sources. United States.
Barty, Christopher P. J.. Tue . "Modulated method for efficient, narrow-bandwidth, laser Compton X-ray and gamma-ray sources". United States. doi:. https://www.osti.gov/servlets/purl/1369038.
@article{osti_1369038,
title = {Modulated method for efficient, narrow-bandwidth, laser Compton X-ray and gamma-ray sources},
author = {Barty, Christopher P. J.},
abstractNote = {A method of x-ray and gamma-ray generation via laser Compton scattering uses the interaction of a specially-formatted, highly modulated, long duration, laser pulse with a high-frequency train of high-brightness electron bunches to both create narrow bandwidth x-ray and gamma-ray sources and significantly increase the laser to Compton photon conversion efficiency.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 11 00:00:00 EDT 2017},
month = {Tue Jul 11 00:00:00 EDT 2017}
}

Patent:

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  • New configurations of lasers and electron beams efficiently and robustly produce high flux beams of bright, tunable, polarized quasi-monoenergetic x-rays and gamma-rays via laser-Compton scattering. Specifically, the use of long-duration, pulsed lasers and closely-spaced, low-charge and low emittance bunches of electron beams increase the spectral flux of the Compton-scattered x-rays and gamma rays, increase efficiency of the laser-electron interaction and significantly reduce the overall complexity of Compton based light sources.
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  • Extremely bright narrow bandwidth gamma-ray sources are expanding the application of accelerator technology and light sources in new directions. An X-band test station has been commissioned at LLNL to develop multi-bunch electron beams. This multi-bunch mode will have stringent requirements for the electron bunch properties including low emittance and energy spread, but across multiple bunches. The test station is a unique facility featuring a 200 MV/m 5.59 cell X-band photogun powered by a SLAC XL4 klystron driven by a Scandinova solid-state modulator. This paper focuses on its current status including the generation and initial characterization of first electron beam. Designmore » and installation of the inverse-Compton scattering interaction region and upgrade paths will be discussed along with future applications.« less
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