Accurate position control of active magnetic levitation using sphere-shaped HTS bulk for inertial nuclear fusion

Yoshihiro Ishigaki, Hiroshi Ueda, Koh Agatsuma, Atsushi Ishiyama

    Research output: Contribution to journalArticle

    4 Citations (Scopus)

    Abstract

    We have been developing an active magnetic levitation system, which is composed of a field-cooled disk-shaped or sphere-shaped high-temperature superconducting bulks (HTS bulks) and vertically piled ring-shaped electromagnets without an iron core. We suppose that this active magnetic levitation system can be applied to inertial nuclear fusion. In inertial nuclear fusion, one of the most important issues is to achieve high-accuracy position control of the fusion fuel, which consists of deuterium and tritium in order to evenly illuminate the entire surface of the target. Therefore, active magnetic levitation is applied to the levitation and position control of a sphere-shaped superconducting capsule containing nuclear fusion fuel. In this study, we designed and constructed a three-coil position control system in order to achieve the stable levitation of the sphere-shaped HTS bulk with a diameter of 5 mm by using the numerical simulation based on the hybrid finite element and boundary element analysis. Then, we carried out the experiments on the position control and restoring force characteristics of the sphere-shaped HTS bulk in the constructed levitation system.

    Original languageEnglish
    Article number5067192
    Pages (from-to)2133-2136
    Number of pages4
    JournalIEEE Transactions on Applied Superconductivity
    Volume19
    Issue number3
    DOIs
    Publication statusPublished - 2009 Jun

    Fingerprint

    Magnetic levitation
    levitation
    Position control
    nuclear fusion
    Fusion reactions
    Insulator Elements
    Temperature
    Electromagnets
    Tritium
    Deuterium
    Capsules
    electromagnets
    Iron
    capsules
    tritium
    Control systems
    deuterium
    Computer simulation
    coils
    fusion

    Keywords

    • Accurate position control
    • Active magnetic levitation
    • HTS bulk
    • Hybrid finite element and boundary element method
    • Inertial fusion

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Condensed Matter Physics
    • Electronic, Optical and Magnetic Materials

    Cite this

    Accurate position control of active magnetic levitation using sphere-shaped HTS bulk for inertial nuclear fusion. / Ishigaki, Yoshihiro; Ueda, Hiroshi; Agatsuma, Koh; Ishiyama, Atsushi.

    In: IEEE Transactions on Applied Superconductivity, Vol. 19, No. 3, 5067192, 06.2009, p. 2133-2136.

    Research output: Contribution to journalArticle

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