Method and apparatus for the formation of a spheromak plasma

Yamada, Masaaki; Furth, Harold P; Stix, Thomas H; Todd, Alan M. M.

Title: Method and apparatus for the formation of a spheromak plasma

Full Record
Other Related Research

Abstract

A method and apparatus for forming a detached, compact toroidally shaped spheromak plasma by an inductive mechanism. A generally spheroidal vacuum vessel (1) houses a toroidally shaped flux ring or core (2) which contains poloidal and toroidal field generating coils. A plasma discharge occurs with the pulsing of the toroidal field coil, and the plasma is caused to expand away from the core (2) and toward the center of the vacuum vessel (1). When the plasma is in an expanded state, a portion of it is pinched off in order to form a separate, detached spheromak plasma configuration. The detached plasma is supported by a magnetic field generated by externally arranged equilibrium field coils (5).

Inventors:

Yamada, Masaaki ^[1]; Furth, Harold P ^[2]; Stix, Thomas H ^[2]; Todd, Alan M. M. ^[3]

Lawrenceville, NJ
Princeton, NJ
Princeton Junction, NJ

Issue Date:: 1982-01-01

Research Org.:: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)

OSTI Identifier:: 864436

Patent Number(s):: 4363776

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

H - ELECTRICITY H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR H05H - PLASMA TECHNIQUE

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

H - ELECTRICITY H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR H05H - PLASMA TECHNIQUE
H05H1/12 - wherein the containment vessel forms a closed or nearly closed loop {

Show less

DOE Contract Number:: EY-76-C-02-3073

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: method; apparatus; formation; spheromak; plasma; forming; detached; compact; toroidally; shaped; inductive; mechanism; spheroidal; vacuum; vessel; houses; flux; core; contains; poloidal; toroidal; field; generating; coils; discharge; occurs; pulsing; coil; caused; expand; center; expanded; portion; pinched; form; separate; configuration; supported; magnetic; generated; externally; arranged; equilibrium; compact toroidal; field generating; plasma discharge; field coils; vacuum vessel; magnetic field; toroidal field; field coil; field generated; spheromak plasma; discharge occurs; generating coils; toroidally shaped; detached spheromak; /376/

Citation Formats


                    Yamada, Masaaki, Furth, Harold P, Stix, Thomas H, and Todd, Alan M. M. Method and apparatus for the formation of a spheromak plasma.  United States: N. p., 1982. 
        Web.

Copy to clipboard


                    Yamada, Masaaki, Furth, Harold P, Stix, Thomas H, & Todd, Alan M. M. Method and apparatus for the formation of a spheromak plasma.  United States.

Copy to clipboard


                    Yamada, Masaaki, Furth, Harold P, Stix, Thomas H, and Todd, Alan M. M. Fri .  
        "Method and apparatus for the formation of a spheromak plasma".  United States.  https://www.osti.gov/servlets/purl/864436.

Copy to clipboard


                    
@article{osti_864436,

  title        = {Method and apparatus for the formation of a spheromak plasma},

  author       = {Yamada, Masaaki and Furth, Harold P and Stix, Thomas H and Todd, Alan M. M.},

  abstractNote = {A method and apparatus for forming a detached, compact toroidally shaped spheromak plasma by an inductive mechanism. A generally spheroidal vacuum vessel (1) houses a toroidally shaped flux ring or core (2) which contains poloidal and toroidal field generating coils. A plasma discharge occurs with the pulsing of the toroidal field coil, and the plasma is caused to expand away from the core (2) and toward the center of the vacuum vessel (1). When the plasma is in an expanded state, a portion of it is pinched off in order to form a separate, detached spheromak plasma configuration. The detached plasma is supported by a magnetic field generated by externally arranged equilibrium field coils (5).},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1982},

  month        = {1}

}

Copy to clipboard

Patent:

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE Patents and OSTI.GOV collections:

Method and apparatus for the formation of a spheromak plasma

Patent Jardin, Stephen C [Princeton, NJ]; Yamada, Masaaki [Lawrenceville, NJ]; Furth, Harold P [Princeton, NJ]; ...

An inductive method and apparatus for forming detached spheromak plasma using a thin-walled metal toroidal ring, with external current leads and internal poloidal and toroidal field coils located inside a vacuum chamber filled with low density hydrogen gas and an external axial field generating coil. The presence of a current in the poloidal field coils, and an externally generated axial field sets up the initial poloidal field configuration in which the field is strongest toward the major axis of the toroid. The internal toroidal-field-generating coil is then pulsed on, ionizing the gas and inducing poloidal current and toroidal magnetic fieldmore » « less
Full Text Available
Apparatus and methods for determining gas saturation and porosity of a formation penetrated by a gas filled or liquid filled borehole

Patent Wilson, Robert D [477 W. Scenic Dr., Grand Junction, CO 81503]

Methods and apparatus are disclosed for determining gas saturation, liquid saturation, porosity and density of earth formations penetrated by a well borehole. Determinations are made from measures of fast neutron and inelastic scatter gamma radiation induced by a pulsed, fast neutron source. The system preferably uses two detectors axially spaced from the neutron source. One detector is preferably a scintillation detector responsive to gamma radiation, and a second detector is preferably an organic scintillator responsive to both neutron and gamma radiation. The system can be operated in cased boreholes which are filled with either gas or liquid. Techniques for correctingmore » « less
Full Text Available
Method and apparatus for production of subsea hydrocarbon formations

Patent Blandford, Joseph W [15 Mott La., Houston, TX 77024]

A system for controlling, separating, processing and exporting well fluids produced from subsea hydrocarbon formations is disclosed. The subsea well tender system includes a surface buoy supporting one or more decks above the water surface for accommodating equipment to process oil, gas and water recovered from the subsea hydrocarbon formation. The surface buoy includes a surface-piercing central flotation column connected to one or more external floatation tanks located below the water surface. The surface buoy is secured to the seabed by one or more tendons which are anchored to a foundation with piles imbedded in the seabed. The system accommodatesmore » « less
Full Text Available
Methods of operation of apparatus measuring formation resistivity from within a cased well having one measurement and two compensation steps

Patent Vail, III, William B. (Bothell, WA)

Methods of operation of an apparatus having at least two pairs of voltage measurement electrodes vertically disposed in a cased well to measure the resistivity of adjacent geological formations from inside the cased well. During stationary measurements with the apparatus at a fixed vertical depth within the cased well, the invention herein discloses methods of operation which include a measurement step and subsequent first and second compensation steps respectively resulting in improved accuracy of measurement. First and second order errors of measurement are identified, and the measurement step and two compensation steps provide methods to substantially eliminate their influence onmore » « less
Full Text Available
Apparatus for suppressing formation of vortices in the coolant fluid of a nuclear reactor and associated method

Patent Ekeroth, Douglas E [Delmont, PA]; Garner, Daniel C [Murrysville, PA]; Hopkins, Ronald J [Pensacola, FL]; ...

An apparatus and method are provided for suppressing the formation of vortices in circulating coolant fluid of a nuclear reactor. A vortex-suppressing plate having a plurality of openings therein is suspended within the lower plenum of a reactor vessel below and generally parallel to the main core support of the reactor. The plate is positioned so as to intersect vortices which may form in the circulating reactor coolant fluid. The intersection of the plate with such vortices disrupts the rotational flow pattern of the vortices, thereby disrupting the formation thereof.
Full Text Available

Similar Records