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Title: Method for generating a plasma wave to accelerate electrons

Abstract

The invention provides a method and apparatus for generating large amplitude nonlinear plasma waves, driven by an optimized train of independently adjustable, intense laser pulses. In the method, optimal pulse widths, interpulse spacing, and intensity profiles of each pulse are determined for each pulse in a series of pulses. A resonant region of the plasma wave phase space is found where the plasma wave is driven most efficiently by the laser pulses. The accelerator system of the invention comprises several parts: the laser system, with its pulse-shaping subsystem; the electron gun system, also called beam source, which preferably comprises photo cathode electron source and RF-LINAC accelerator; electron photo-cathode triggering system; the electron diagnostics; and the feedback system between the electron diagnostics and the laser system. The system also includes plasma source including vacuum chamber, magnetic lens, and magnetic field means. The laser system produces a train of pulses that has been optimized to maximize the axial electric field amplitude of the plasma wave, and thus the electron acceleration, using the method of the invention.

Inventors:
 [1];  [2];  [1]
  1. Ann Arbor, MI
  2. Chevy Chase, MD
Issue Date:
Research Org.:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
OSTI Identifier:
870998
Patent Number(s):
5637966
Assignee:
Regents of University of Michigan (Ann Arbor, MI)
Patent Classifications (CPCs):
H - ELECTRICITY H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR H05H - PLASMA TECHNIQUE
G - PHYSICS G21 - NUCLEAR PHYSICS G21K - TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR
DOE Contract Number:  
AC04-76
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; generating; plasma; wave; accelerate; electrons; provides; apparatus; amplitude; nonlinear; waves; driven; optimized; train; independently; adjustable; intense; laser; pulses; optimal; pulse; widths; interpulse; spacing; intensity; profiles; determined; series; resonant; region; phase; space; found; efficiently; accelerator; comprises; pulse-shaping; subsystem; electron; gun; called; beam; source; preferably; photo; cathode; rf-linac; photo-cathode; triggering; diagnostics; feedback; including; vacuum; chamber; magnetic; lens; field; means; produces; maximize; axial; electric; acceleration; plasma wave; magnetic lens; electron source; laser pulses; plasma source; pulse width; vacuum chamber; laser pulse; electric field; magnetic field; preferably comprises; beam source; electron gun; intensity profile; pulse widths; phase space; cathode electron; accelerate electrons; axial electric; field means; preferably comprise; /315/359/

Citation Formats

Umstadter, Donald, Esarey, Eric, and Kim, Joon K. Method for generating a plasma wave to accelerate electrons. United States: N. p., 1997. Web.
Umstadter, Donald, Esarey, Eric, & Kim, Joon K. Method for generating a plasma wave to accelerate electrons. United States.
Umstadter, Donald, Esarey, Eric, and Kim, Joon K. Wed . "Method for generating a plasma wave to accelerate electrons". United States. https://www.osti.gov/servlets/purl/870998.
@article{osti_870998,
title = {Method for generating a plasma wave to accelerate electrons},
author = {Umstadter, Donald and Esarey, Eric and Kim, Joon K},
abstractNote = {The invention provides a method and apparatus for generating large amplitude nonlinear plasma waves, driven by an optimized train of independently adjustable, intense laser pulses. In the method, optimal pulse widths, interpulse spacing, and intensity profiles of each pulse are determined for each pulse in a series of pulses. A resonant region of the plasma wave phase space is found where the plasma wave is driven most efficiently by the laser pulses. The accelerator system of the invention comprises several parts: the laser system, with its pulse-shaping subsystem; the electron gun system, also called beam source, which preferably comprises photo cathode electron source and RF-LINAC accelerator; electron photo-cathode triggering system; the electron diagnostics; and the feedback system between the electron diagnostics and the laser system. The system also includes plasma source including vacuum chamber, magnetic lens, and magnetic field means. The laser system produces a train of pulses that has been optimized to maximize the axial electric field amplitude of the plasma wave, and thus the electron acceleration, using the method of the invention.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {1}
}

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Works referenced in this record:

Laser Beat Accelerator
journal, June 1981


Interaction of highly relativistic short laser pulses with plasmas and nonlinear wake-field generation
journal, February 1992


Laser accelerator by plasma waves
conference, January 1982


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An Electron Accelerator Using a Laser
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Resonantly laser-driven plasma waves for electron acceleration
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Laser wakefield acceleration and relativistic optical guiding
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Nonlinear interaction of intense laser pulses in plasmas
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Femtosecond Lasers: the next Generation
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100-fs pulse generation and amplification in Ti:Al_2O_3
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Nonlinear Plasma Waves Resonantly Driven by Optimized Laser Pulse Trains
journal, February 1994