A 5 MV Radial Insulator Electron Gun for an Electron Ring Accelerator

Abstract

A massive radial insulator is considered as an approach for a stable mounting of a vacuum diode electron gun and connection to a 5-MV, 70-ohms, oil dielectric pulse generator. A rationale for determining the electric field permitted without breakdown along the insulator-vacuum interface is presented. The electric field along this interface and on the center conductor is determined by numerical solutions of Laplace's equation for specific models. A dished head and field shaping collar make it possible to operate a 4.5 ft. diameter insulator at 5 MV. The rise-time due to the shunt capacitance of the electron gun is calculated to be 13 ns. A proposal is made to design and construct such a radial insulator from cast nylon. An external magnetic field must be used to prevent vacuum breakdown and limit the current from the cathode stalk. The electron gun impedance cannot be calculated at this time.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1973
Accession Number
AD0758640

Entities

People

  • J. J. Condon
  • W. H. Lupton

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Dielectrics
  • Electric Fields
  • Electromagnetic Fields
  • Electron Beams
  • Electron Guns
  • Electrostatic Fields
  • Emission
  • Field Emission
  • Generators
  • Geometry
  • Magnetic Fields
  • Mechanical Properties
  • Military Research
  • Pulse Generators
  • Security
  • Transmission Lines
  • Voltage

Fields of Study

  • Physics

Readers

  • Electrical Engineering
  • Pulsed Power and Plasma Physics.

Technology Areas

  • Microelectronics