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Title: Oscillatory nonhmic current drive for maintaining a plasma current

Abstract

Apparatus and method of the invention maintain a plasma current with an oscillatory nonohmic current drive. Each cycle of operation has a generation period in which current driving energy is applied to the plasma, and a relaxation period in which current driving energy is removed. Plasma parameters, such as plasma temperature or plasma average ionic charge state, are modified during the generation period so as to oscillate plasma resistivity in synchronism with the application of current driving energy. The invention improves overall current drive efficiencies.

Inventors:
 [1]
  1. Princeton, NJ
Issue Date:
Research Org.:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
OSTI Identifier:
866007
Patent Number(s):
4615861
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
G - PHYSICS G21 - NUCLEAR PHYSICS G21B - FUSION REACTORS
DOE Contract Number:  
AC02-76CH03073
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
oscillatory; nonhmic; current; drive; maintaining; plasma; apparatus; method; maintain; nonohmic; cycle; operation; generation; period; driving; energy; applied; relaxation; removed; parameters; temperature; average; ionic; charge; modified; oscillate; resistivity; synchronism; application; improves; overall; efficiencies; current drive; plasma current; plasma parameters; generation period; /376/

Citation Formats

Fisch, Nathaniel J. Oscillatory nonhmic current drive for maintaining a plasma current. United States: N. p., 1986. Web.
Fisch, Nathaniel J. Oscillatory nonhmic current drive for maintaining a plasma current. United States.
Fisch, Nathaniel J. Wed . "Oscillatory nonhmic current drive for maintaining a plasma current". United States. https://www.osti.gov/servlets/purl/866007.
@article{osti_866007,
title = {Oscillatory nonhmic current drive for maintaining a plasma current},
author = {Fisch, Nathaniel J},
abstractNote = {Apparatus and method of the invention maintain a plasma current with an oscillatory nonohmic current drive. Each cycle of operation has a generation period in which current driving energy is applied to the plasma, and a relaxation period in which current driving energy is removed. Plasma parameters, such as plasma temperature or plasma average ionic charge state, are modified during the generation period so as to oscillate plasma resistivity in synchronism with the application of current driving energy. The invention improves overall current drive efficiencies.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1986},
month = {1}
}

Patent:

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