Tokamak with in situ magnetohydrodynamic generation of toroidal magnetic field

Schaffer, Michael J

Title: Tokamak with in situ magnetohydrodynamic generation of toroidal magnetic field

Full Record
Other Related Research

Abstract

A tokamak apparatus includes an electrically conductive metal pressure vessel for defining a chamber and confining liquid therein. A liner disposed within said chamber defines a toroidal space within the liner and confines gas therein. The metal vessel provides an electrically conductive path linking the toroidal space. Liquid metal is forced outwardly through the chamber outside of the toroidal space to generate electric current in the conductive path and thereby generate a toroidal magnetic field within the toroidal space. Toroidal plasma is developed within the toroidal space about the major axis thereof.

Inventors:

Schaffer, Michael J ^[1]

San Diego, CA

Issue Date:: 1986-01-01

Research Org.:: GA TECHNOLOGIES INC

OSTI Identifier:: 866006

Patent Number(s):: 4615860

Assignee:: United States Department of Energy (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

Show more

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
Y02E30/10 - Fusion reactors

G - PHYSICS G21 - NUCLEAR PHYSICS G21B - FUSION REACTORS
G21B1/11 - Details

H - ELECTRICITY H02 - GENERATION H02K - DYNAMO-ELECTRIC MACHINES
H02K44/085 - {with conducting liquids}

Show less

DOE Contract Number:: AT03-76ET51011

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: tokamak; situ; magnetohydrodynamic; generation; toroidal; magnetic; field; apparatus; electrically; conductive; metal; pressure; vessel; defining; chamber; confining; liquid; therein; liner; disposed; defines; space; confines; gas; provides; path; linking; forced; outwardly; outside; generate; electric; current; plasma; developed; major; axis; liner disposed; toroidal magnet; major axis; toroidal space; toroidal magnetic; electric current; toroidal plasma; pressure vessel; magnetic field; liquid metal; electrically conductive; conductive path; conductive metal; gas therein; tokamak apparatus; confining liquid; liquid therein; metal pressure; generate electric; /376/

Citation Formats


                    Schaffer, Michael J. Tokamak with in situ magnetohydrodynamic generation of toroidal magnetic field.  United States: N. p., 1986. 
        Web.

Copy to clipboard


                    Schaffer, Michael J. Tokamak with in situ magnetohydrodynamic generation of toroidal magnetic field.  United States.

Copy to clipboard


                    Schaffer, Michael J. Wed .  
        "Tokamak with in situ magnetohydrodynamic generation of toroidal magnetic field".  United States.  https://www.osti.gov/servlets/purl/866006.

Copy to clipboard


                    
@article{osti_866006,

  title        = {Tokamak with in situ magnetohydrodynamic generation of toroidal magnetic field},

  author       = {Schaffer, Michael J},

  abstractNote = {A tokamak apparatus includes an electrically conductive metal pressure vessel for defining a chamber and confining liquid therein. A liner disposed within said chamber defines a toroidal space within the liner and confines gas therein. The metal vessel provides an electrically conductive path linking the toroidal space. Liquid metal is forced outwardly through the chamber outside of the toroidal space to generate electric current in the conductive path and thereby generate a toroidal magnetic field within the toroidal space. Toroidal plasma is developed within the toroidal space about the major axis thereof.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1986},

  month        = {1}

}

Copy to clipboard

Patent:

View Patent

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE Patents and OSTI.GOV collections:

Tokamak with mechanical compression of toroidal magnetic field

Patent Ohkawa, Tihiro [La Jolla, CA]

A tokamak apparatus includes a pressure vessel for defining a reservoir and confining liquid therein. A collapsible toroidal liner disposed within the pressure vessel defines a toroidal space within the liner. Liquid metal fills the reservoir outside said liner. A toroidal magnetic field is developed within the toroidal space about the major axis thereof. A toroidal plasma is developed within the toroidal space about the major axis thereof. Pressure is applied to the liquid metal to collapse the liner and reduce the volume of the toroidal space, thereby increasing the toroidal magnetic flux density therein.
Full Text Available
Tokamak with liquid metal for inducing toroidal electrical field

Patent Ohkawa, Tihiro [La Jolla, CA]

A tokamak apparatus includes a vessel for defining a reservoir and confining liquid therein. A toroidal liner disposed within said vessel defines a toroidal space within the liner confines gas therein. Liquid metal fills the reservoir outside the liner. A magnetic field is established in the liquid metal to develop magnetic flux linking the toroidal space. The gas is ionized. The liquid metal and the toroidal space are moved relative to one another transversely of the space to generate electric current in the ionized gas in the toroidal space about its major axis and thereby heat plasma developed in themore » toroidal space. « less
Full Text Available
Tokamak with liquid metal toroidal field coil

Patent Ohkawa, Tihiro [La Jolla, CA]; Schaffer, Michael J [San Diego, CA]

Tokamak apparatus includes a pressure vessel for defining a reservoir and confining liquid therein. A toroidal liner disposed within the pressure vessel defines a toroidal space within the liner. Liquid metal fills the reservoir outside said liner. Electric current is passed through the liquid metal over a conductive path linking the toroidal space to produce a toroidal magnetic field within the toroidal space about the major axis thereof. Toroidal plasma is developed within the toroidal space about the major axis thereof.
Full Text Available
Injection of electrons with predominantly perpendicular energy into an area of toroidal field ripple in a tokamak plasma to improve plasma confinement

Patent Ono, Masayuki [Princeton Junction, NJ]; Furth, Harold [Princeton, NJ]

An electron injection scheme for controlling transport in a tokamak plasma. Electrons with predominantly perpendicular energy are injected into a ripple field region created by a group of localized poloidal field bending magnets. The trapped electrons then grad-B drift vertically toward the plasma interior until they are detrapped, charging the plasma negative. Calculations indicate that the highly perpendicular velocity electrons can remain stable against kinetic instabilities in the regime of interest for tokamak experiments. The penetration distance can be controlled by controlling the "ripple mirror ratio", the energy of the injected electrons, and their v.sub..perp. /v.sub.51 ratio. In this scheme,more » « less
Full Text Available
Air core poloidal magnetic field system for a toroidal plasma producing device

Patent Marcus, Frederick B [Clinton, TN]

A poloidal magnetics system for a plasma producing device of toroidal configuration is provided that reduces both the total volt-seconds requirement and the magnitude of the field change at the toroidal field coils. The system utilizes an air core transformer wound between the toroidal field (TF) coils and the major axis outside the TF coils. Electric current in the primary windings of this transformer is distributed and the magnetic flux returned by air core windings wrapped outside the toroidal field coils. A shield winding that is closely coupled to the plasma carries a current equal and opposite to the plasmamore » « less
Full Text Available

Similar Records