Feedback Control of an Unstable Plasma.

Abstract

The report describes the application of feedback to the flute modes expected to arise in the ELMAX plasma, a rotating, cylindrical plasma confined in a magnetic mirror device. A guiding center model of the plasma is formulated and used in a normal mode feedback analysis to investigate the stability of the plasma as the characteristics of the feedback loop change. Among the characteristics studied are the exciter geometry, the detector placement, the gain of the feedback amplifier, and the resistor and capacitor values in the compensation circuit. Based on the study, a design procedure for the control of the m=1 flute mode is formulated and illustrated. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1972
Accession Number
AD0751341

Entities

People

  • C. D. Hendricks
  • J. M. Crowley

Organizations

  • University of Illinois Urbana–Champaign

Tags

DTIC Thesaurus Topics

  • Amplifiers
  • Capacitors
  • Compensation
  • Detectors
  • Electronic Components
  • Electronic Equipment
  • Feedback
  • Feedback Amplifiers
  • Geometry
  • Magnetic Mirrors
  • Resistors

Fields of Study

  • Physics

Readers

  • Control Systems Engineering.
  • Electronics Engineering
  • Plasma Physics / Magnetohydrodynamics