Accession Number:

ADA229858

Title:

Simulation Studies of a Klystronlike Amplifier Operating in the 10-100 GW Regime

Descriptive Note:

Memorandum rept.

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Report Date:

1990-11-20

Pagination or Media Count:

29.0

Abstract:

A coaxial drift tube allows propagation of an ultra high power relativistic electron beam 500 keV, or 100 kA, 100 ns. This paper covers the modulation of a large diameter 12.6 cm intense relativistic electron beam 500 keV, 16 ka by an external microwave source via particle simulation. The annular beam, enclosed within a coaxial drift tube, is found to be fully modulated by a low-power external rf source at a frequency of 1.3 GHz. For such an intense beam, a highly nonlinear interaction takes place at the modulating gap, producing highly coherent bunches of electrons. This finding is similar to earlier research in which such modulation was studied for an intense beam propagating in a hollow drift tube. Unlike the hollow drift tube case, the coaxial configuration is easily scaled to high power. Here, a very large diameter 26 cm intense beam 460 keV, 100 kA is fully modulated at 1.3 GHz to obtain 31 GW of rf beam power.

Subject Categories:

  • Electrical and Electronic Equipment
  • Electricity and Magnetism
  • Particle Accelerators
  • Nuclear Physics and Elementary Particle Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE