Microwigglers for Submillimeter Wavelength Free-Electron Lasers

Abstract

We have designed and tested an electromagnet planar microwiggler for use in free-electron lasers (FELs), constructed of current conductors wound on ferromagnetic cores. A prototype with a period of 1 cm and gap of 0.5 cm produced a peak field on axis in excess of 4.6 kG, with a linear B/H characteristic to about 3.2 kG. The field of each half-period of the wiggler is independently tuneable by adjusting the current delivered to each, thus allowing for precision tuning and/or wiggler tapering. We employ general scaling laws to predict performance of a geometrically similar design with a period of 5 mm.

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Document Details

Document Type
Technical Report
Publication Date
Mar 28, 1990
Accession Number
ADA220185

Entities

People

  • George Bekefi

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms

DTIC Thesaurus Topics

  • Amplitude
  • Construction
  • Current Density
  • Efficiency
  • Electrons
  • Free Electron Lasers
  • Free Electrons
  • Frequency
  • Geometry
  • Lasers
  • Magnetic Fields
  • Magnets
  • Massachusetts
  • Measurement
  • Military Research
  • Precision
  • Scaling Laws

Fields of Study

  • Physics

Readers

  • Electrical Engineering
  • Pulsed Power and Plasma Physics.

Technology Areas

  • Directed Energy
  • Directed Energy - Pulsed-Laser Deposition
  • Microelectronics