Estimates of Negative-Mass Instability Growth for the NRL Betatron,

Abstract

Growth rates of the negative-mass instability are calculated for parameters close to those of the NRL betatron. The results indicate that the negative-mass transition energy is at. or close to, the injection energy. In the absence of a spread in particle circulation frequencies, strong negative-mass growth is predicted to set in as the beam is accelerated. To aviod this, it may be necessary to significantly increase the beam minor radius. A stability criterion in terms of the minor radius is given. Keywords: High-current Accelerators; Modified betatron; Negative-mass instability.

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1985
Accession Number
ADA163207

Entities

People

  • Thomas P. Hughes

Tags

DTIC Thesaurus Topics

  • Betatrons
  • Circular Accelerators
  • Frequency
  • Instability
  • Particles
  • Transitions

Fields of Study

  • Physics

Readers

  • Operations Research
  • Parasitology and Pharmacology of Malaria.
  • Pulsed Power and Plasma Physics.