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Title: Thermonuclear inverse magnetic pumping power cycle for stellarator reactor

Abstract

The plasma column in a stellarator is compressed and expanded alternatively in minor radius. First a plasma in thermal balance is compressed adiabatically. The volume of the compressed plasma is maintained until the plasma reaches a new thermal equilibrium. The plasma is then expanded to its original volume. As a result of the way a stellarator works, the plasma pressure during compression is less than the corresponding pressure during expansion. Therefore, negative work is done on the plasma over a complete cycle. This work manifests itself as a back-voltage in the toroidal field coils. Direct electrical energy is obtained from this voltage. Alternatively, after the compression step, the plasma can be expanded at constant pressure. The cycle can be made self-sustaining by operating a system of two stellarator reactors in tandem. Part of the energy derived from the expansion phase of a first stellarator reactor is used to compress the plasma in a second stellarator reactor.

Inventors:
 [1];  [2]
  1. Pleasanton, CA
  2. Princeton, NJ
Issue Date:
Research Org.:
Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ
OSTI Identifier:
875274
Patent Number(s):
H936
Assignee:
United States of America as represented by United States (Washington, DC)
DOE Contract Number:  
AC02-76CH03073
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
thermonuclear; inverse; magnetic; pumping; power; cycle; stellarator; reactor; plasma; column; compressed; expanded; alternatively; minor; radius; thermal; balance; adiabatically; volume; maintained; reaches; equilibrium; original; result; pressure; compression; corresponding; expansion; negative; complete; manifests; back-voltage; toroidal; field; coils; direct; electrical; energy; obtained; voltage; step; constant; self-sustaining; operating; reactors; tandem; derived; phase; compress; direct electrical; field coils; plasma column; electrical energy; toroidal field; constant pressure; power cycle; field coil; thermal equilibrium; complete cycle; plasma pressure; thermal balance; energy derived; /376/

Citation Formats

Ho, Darwin D, and Kulsrud, Russell M. Thermonuclear inverse magnetic pumping power cycle for stellarator reactor. United States: N. p., 1991. Web.
Ho, Darwin D, & Kulsrud, Russell M. Thermonuclear inverse magnetic pumping power cycle for stellarator reactor. United States.
Ho, Darwin D, and Kulsrud, Russell M. Tue . "Thermonuclear inverse magnetic pumping power cycle for stellarator reactor". United States. https://www.osti.gov/servlets/purl/875274.
@article{osti_875274,
title = {Thermonuclear inverse magnetic pumping power cycle for stellarator reactor},
author = {Ho, Darwin D and Kulsrud, Russell M},
abstractNote = {The plasma column in a stellarator is compressed and expanded alternatively in minor radius. First a plasma in thermal balance is compressed adiabatically. The volume of the compressed plasma is maintained until the plasma reaches a new thermal equilibrium. The plasma is then expanded to its original volume. As a result of the way a stellarator works, the plasma pressure during compression is less than the corresponding pressure during expansion. Therefore, negative work is done on the plasma over a complete cycle. This work manifests itself as a back-voltage in the toroidal field coils. Direct electrical energy is obtained from this voltage. Alternatively, after the compression step, the plasma can be expanded at constant pressure. The cycle can be made self-sustaining by operating a system of two stellarator reactors in tandem. Part of the energy derived from the expansion phase of a first stellarator reactor is used to compress the plasma in a second stellarator reactor.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1991},
month = {1}
}

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