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Title: Tokamak with liquid metal toroidal field coil

Abstract

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.

Inventors:
 [1];  [2]
  1. (La Jolla, CA)
  2. (San Diego, CA)
Publication Date:
Research Org.:
GA TECHNOLOGIES INC
OSTI Identifier:
864072
Patent Number(s):
US 4305783
Assignee:
United States of America as represented by United States (Washington, DC) OSTI
DOE Contract Number:
AT03-76ET51011
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
tokamak; liquid; metal; toroidal; field; coil; apparatus; pressure; vessel; defining; reservoir; confining; therein; liner; disposed; defines; space; fills; outside; electric; current; passed; conductive; path; linking; produce; magnetic; major; axis; plasma; developed; liner disposed; toroidal magnet; major axis; toroidal space; toroidal magnetic; electric current; toroidal plasma; pressure vessel; magnetic field; liquid metal; toroidal field; conductive path; field coil; reservoir outside; vessel defines; metal fills; tokamak apparatus; confining liquid; toroidal liner; liquid therein; metal toroidal; vessel define; /376/

Citation Formats

Ohkawa, Tihiro, and Schaffer, Michael J. Tokamak with liquid metal toroidal field coil. United States: N. p., 1981. Web.
Ohkawa, Tihiro, & Schaffer, Michael J. Tokamak with liquid metal toroidal field coil. United States.
Ohkawa, Tihiro, and Schaffer, Michael J. Thu . "Tokamak with liquid metal toroidal field coil". United States. doi:. https://www.osti.gov/servlets/purl/864072.
@article{osti_864072,
title = {Tokamak with liquid metal toroidal field coil},
author = {Ohkawa, Tihiro and Schaffer, Michael J.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 1981},
month = {Thu Jan 01 00:00:00 EST 1981}
}

Patent:

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  • 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.
  • 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
  • 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
  • A torque structure is disclosed particularly suitable for utilization in a power reactor of the Tokamak-type, and operable therein for purposes of providing support for the toroidal field (TF) coils that comprise one of the major operating components of such a Tokamak power reactor. The subject torque structure takes the form of a frame structure that is operable to enable torque loads acting on the TF coils to be equilibrated as close to the area of force application as feasible. The aforesaid torque structure includes an intercoil structure composed of spacer wedges that are interposed between each adjacent pair ofmore » TF coils. The spacer wedges, in turn, consist of bearing plates positioned between the TF coils so as to be in contacting relation therewith and a number of cross plates that are cooperatively associated with the bearing plates so as to form therewith a rigid assembly. The intercoil structure is affixed to a segmented, membrane shell that surrounds, encloses and supports the TF coil frames. Access is had to the interior of the shell through an opening formed for this purpose in a reinforced portion of the shell. Eddy current losses are minimized by insulating the joints formed at the juncture of adjoining segments of the shell.« less
  • Disclosed is a segmented toroidal field coil for use in a tokamak-type reactor and a method for forming the coil. Each toroidal field coil winding is segmented into two or more segments with a connection means provided at the end of each segment for electrically connecting the segments together and for joining consecutive adjacent segments. The coil segments are electrically conducting and will, therefore, induce a toroidal magnetic field when its feed points are connected to a power source. The toroidal field coil of the present invention maximizes heat flow from the plasma region of the reactor to the externalmore » blanket by eliminating bulky crossover connections from coil to coil that could otherwise restrict the heat flow. The present invention discloses a simple and efficient method for forming a toroidal field coil assembly that eliminates costly final machining such as precision twisting.« less