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Title: High field pulsed microwiggler comprising a conductive tube with periodically space slots

Abstract

A microwiggler assembly produces large magnetic fields for oscillating ched particle beams, particularly electron beams for free electron laser (FEL) application. A tube of electrically conductive material is formed with radial slots axially spaced at the period of the electron beam. The slots have alternate 180.degree. relationships and are formed to a maximum depth of 0.6 to 0.7 times the tube circumference. An optimum slot depth is selected to eliminate magnetic quadrupole fields within the microwiggler as determined from a conventional pulsed wire technique. Suitable slot configurations include single slits, double slits, triple slits, and elliptical slots. An axial electron beam direction is maintained by experimentally placing end slits adjacent entrance and exit portions of the assembly, where the end slit depth is determined by use of the pulsed wire technique outside the tube.

Inventors:
 [1]
  1. (Santa Fe, NM)
Issue Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM
OSTI Identifier:
868455
Patent Number(s):
5144193
Assignee:
United State of America as represented by Department of Energy (Washington, DC) LANL
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
field; pulsed; microwiggler; comprising; conductive; tube; periodically; space; slots; assembly; produces; magnetic; fields; oscillating; ched; particle; beams; particularly; electron; free; laser; application; electrically; material; formed; radial; axially; spaced; period; beam; alternate; 180; degree; relationships; maximum; depth; times; circumference; optimum; slot; selected; eliminate; quadrupole; determined; conventional; wire; technique; suitable; configurations; single; slits; double; triple; elliptical; axial; direction; maintained; experimentally; placing; adjacent; entrance; exit; portions; slit; outside; radial slots; particle beam; conductive material; magnetic field; electrically conductive; electron beam; magnetic fields; electron laser; free electron; electron beams; particle beams; beam direction; axially spaced; quadrupole field; field pulse; periodically space; particularly electron; ched particle; slot configuration; conductive tube; /315/372/

Citation Formats

Warren, Roger W. High field pulsed microwiggler comprising a conductive tube with periodically space slots. United States: N. p., 1992. Web.
Warren, Roger W. High field pulsed microwiggler comprising a conductive tube with periodically space slots. United States.
Warren, Roger W. Wed . "High field pulsed microwiggler comprising a conductive tube with periodically space slots". United States. https://www.osti.gov/servlets/purl/868455.
@article{osti_868455,
title = {High field pulsed microwiggler comprising a conductive tube with periodically space slots},
author = {Warren, Roger W.},
abstractNote = {A microwiggler assembly produces large magnetic fields for oscillating ched particle beams, particularly electron beams for free electron laser (FEL) application. A tube of electrically conductive material is formed with radial slots axially spaced at the period of the electron beam. The slots have alternate 180.degree. relationships and are formed to a maximum depth of 0.6 to 0.7 times the tube circumference. An optimum slot depth is selected to eliminate magnetic quadrupole fields within the microwiggler as determined from a conventional pulsed wire technique. Suitable slot configurations include single slits, double slits, triple slits, and elliptical slots. An axial electron beam direction is maintained by experimentally placing end slits adjacent entrance and exit portions of the assembly, where the end slit depth is determined by use of the pulsed wire technique outside the tube.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {1}
}

Patent:

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