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Title: Free electron laser

Abstract

A high gain, single-pass free electron laser formed of a high brilliance electron injector source, a linear accelerator which imparts high energy to the electron beam, and an undulator capable of extremely high magnetic fields, yet with a very short period. The electron injector source is the first stage (gap) of the linear accelerator or a radial line transformer driven by fast circular switch. The linear accelerator is formed of a plurality of accelerating gaps arranged in series. These gaps are energized in sequence by releasing a single pulse of energy which propagates simultaneously along a plurality of transmission lines, each of which feeds the gaps. The transmission lines are graduated in length so that pulse power is present at each gap as the accelerated electrons pass therethrough. The transmission lines for each gap are open circuited at their ends. The undualtor has a structure similar to the accelerator, except that the transmission lines for each gap are substantially short circuited at their ends, thus converting the electric field into magnetic field. A small amount of resistance is retained in order to generate a small electric field for replenishing the electron bunch with the energy lost as it traverses throughmore » the undulator structure.« less

Inventors:
 [1]
  1. (Alameda, CA)
Issue Date:
Research Org.:
Stanford Linear Accelerator Center (SLAC), Menlo Park, CA
OSTI Identifier:
867614
Patent Number(s):
4972420
Assignee:
Harris Blake Corporation (Great Neck, NY) SLAC
DOE Contract Number:  
AC03-76SF00515
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
free; electron; laser; single-pass; formed; brilliance; injector; source; linear; accelerator; imparts; energy; beam; undulator; capable; extremely; magnetic; fields; period; stage; gap; radial; line; transformer; driven; fast; circular; switch; plurality; accelerating; gaps; arranged; series; energized; sequence; releasing; single; pulse; propagates; simultaneously; transmission; lines; feeds; graduated; length; power; accelerated; electrons; pass; therethrough; circuited; undualtor; structure; similar; substantially; converting; electric; field; amount; resistance; retained; generate; replenishing; bunch; lost; traverses; transmission lines; electric field; transmission line; magnetic field; electron beam; magnetic fields; electron laser; free electron; linear accelerator; pulse power; pass therethrough; single pulse; accelerating gaps; accelerating gap; electron bunch; electrons pass; accelerated electron; pass free; /372/315/

Citation Formats

Villa, Francesco. Free electron laser. United States: N. p., 1990. Web.
Villa, Francesco. Free electron laser. United States.
Villa, Francesco. Mon . "Free electron laser". United States. https://www.osti.gov/servlets/purl/867614.
@article{osti_867614,
title = {Free electron laser},
author = {Villa, Francesco},
abstractNote = {A high gain, single-pass free electron laser formed of a high brilliance electron injector source, a linear accelerator which imparts high energy to the electron beam, and an undulator capable of extremely high magnetic fields, yet with a very short period. The electron injector source is the first stage (gap) of the linear accelerator or a radial line transformer driven by fast circular switch. The linear accelerator is formed of a plurality of accelerating gaps arranged in series. These gaps are energized in sequence by releasing a single pulse of energy which propagates simultaneously along a plurality of transmission lines, each of which feeds the gaps. The transmission lines are graduated in length so that pulse power is present at each gap as the accelerated electrons pass therethrough. The transmission lines for each gap are open circuited at their ends. The undualtor has a structure similar to the accelerator, except that the transmission lines for each gap are substantially short circuited at their ends, thus converting the electric field into magnetic field. A small amount of resistance is retained in order to generate a small electric field for replenishing the electron bunch with the energy lost as it traverses through the undulator structure.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {1}
}

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