Systems and methods for reducing undesired eddy currents
First Claim
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1. A method for reducing undesired eddy currents induced in a conducting structure, the method comprising the steps of:
- inducing a first set of eddy currents in a conducting structure, andtranslating a plasma into the conducting structure, wherein the plasma translating into the plasma confinement vessel to inducing a second set of eddy currents in the conducting structure, wherein the first set of eddy currents being induced prior to the second set of eddy currents and having a distribution equal to and opposite in sign to the distribution of the second set of eddy currents to substantial cancel the second set of eddy currents upon inducement of the second set of eddy currents in the conducting structure.
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Abstract
Systems and methods to reduce the amplitude of undesirable eddy currents in conducting structures, e.g., induced by the translation of an FRC into a confinement chamber, while leaving beneficial eddy currents unaffected. This is achieved by inducing opposing currents in the same conducting structures prior to plasma translation into the confinement chamber.
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Citations
20 Claims
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1. A method for reducing undesired eddy currents induced in a conducting structure, the method comprising the steps of:
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inducing a first set of eddy currents in a conducting structure, and translating a plasma into the conducting structure, wherein the plasma translating into the plasma confinement vessel to inducing a second set of eddy currents in the conducting structure, wherein the first set of eddy currents being induced prior to the second set of eddy currents and having a distribution equal to and opposite in sign to the distribution of the second set of eddy currents to substantial cancel the second set of eddy currents upon inducement of the second set of eddy currents in the conducting structure. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system for reducing undesired eddy currents induced in a vessel wall, the system comprising:
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a vessel having a wall and an interior, a formation section attached to an end of the vessel, a plurality coils positioned around the vessel, and a control system coupled to the plurality of coils and configured to induce a first set of eddy currents in the wall of the vessel prior to a second set of eddy currents being induced in the wall of the vessel, wherein the first set of eddy currents having a distribution equal to and opposite in sign to the distribution of the second set of eddy currents to substantial cancel the second set of eddy currents upon inducement of the second set of eddy currents in the wall of the chamber, wherein the control system is further configured to translate a plasma from the formation section into the interior of the vessel, wherein the translating plasma induces the second set of eddy currents in the wall of the vessel. - View Dependent Claims (8, 9, 10, 11)
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12. A method for reducing undesired eddy currents induced in a wall of a vessel, the method comprising the steps of:
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inducing a first set of eddy currents in a wall of a vessel having a wall and an interior prior to inducing a second set of eddy currents in the wall of the vessel, and translating a plasma into the vessel, wherein the plasma translating into the plasma confinement vessel inducing a second set of eddy currents in the wall of the vessel, wherein the first set of eddy currents having a distribution equal to and opposite in sign to the distribution of the second set of eddy currents to substantial cancel the second set of eddy currents upon inducement of the second set of eddy currents in the wall of the vessel. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification