Design and Initial Operation of a Shallow-Focusing, Annular, Extraction Applied-Magnetic-Field Diode

Abstract

A 150-cm(expn 2) applied-magnetic-field diode has been designed and fielded on Gamble II to produce a focused proton beam for self-pinched ion-beam-transport studies. For a beam divergence of 20 mrad, the diode should focus 200 kA of protons to < 2-cm radius at 70 cm from the anode. The diode is insulated with magnetic-fields from two coils driven by a main current of up to 50 kA and 100-(micro)s risetime. An opposite-polarity current pulse of 2-ins half-period, prior to the main pulse, is used to position the B-field separatrix near the anode and remove angular momentum from the extracted beam.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1997
Accession Number
ADA635806

Entities

People

  • B. V. Oliver
  • David D. Hinshelwood
  • Frank C. Young
  • J. G. Greenly
  • J. M. Neri
  • John R. Boller
  • Paul F. Ottinger
  • R. C. Fisher
  • T. G. Jones

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Angular Momentum
  • Diameters
  • Extraction
  • Images
  • Impedance
  • Ion Beams
  • Ion Sources
  • Ions
  • Kinetic Energy
  • Magnetic Fields
  • Military Research
  • Momentum
  • Polarity
  • Proton Beams
  • Protons
  • Pulsed Power
  • Transport Ships

Fields of Study

  • Physics

Readers

  • Pulsed Power and Plasma Physics.

Technology Areas

  • Microelectronics