Effect of neutron irradiation on high-temperature superconductors

Toru Aoki, Hiroshi Ueda, Atsushi Ishiyama, Nobuyuki Miyahara, Naoji Kashima, Shigeo Nagaya

    Research output: Contribution to journalArticle

    9 Citations (Scopus)

    Abstract

    In recent years, rapid improvements have been made to the quality of high-temperature superconductors (HTSs). We carried out a feasibility study on the application of HTS coils in medical accelerators, which are used for particle cancer therapy. In this application, HTSs are exposed to radiation. As a result, the HTS conductors become radioactive, thereby making the operation and maintenance of the reactors or accelerators difficult. Further, radiation affects the superconducting characteristics and causes an increase in the amount of nuclear waste generated. Therefore, it is necessary to investigate the effect of radiation on HTSs. In this study, we carried out irradiation experiments on Bi-2223 and YBCO tapes at room temperature by using 14-MeV neutrons (dose: 77 kGy). We also performed radioactive analyses on HTS tapes and carried out current-voltage (I - V) measurements on the tapes immersed in a liquid-nitrogen (LN2) bath, before and after irradiation. The irradiation to YBCO had been conducted in the past[1]. We irradiated neutrons to YBCO and Bi-2223 tapes on the assumption that they will be applied by the medical accelerator.

    Original languageEnglish
    Article number5704166
    Pages (from-to)3200-3202
    Number of pages3
    JournalIEEE Transactions on Applied Superconductivity
    Volume21
    Issue number3 PART 3
    DOIs
    Publication statusPublished - 2011 Jun

    Fingerprint

    High temperature superconductors
    Neutron irradiation
    neutron irradiation
    high temperature superconductors
    Tapes
    tapes
    Particle accelerators
    accelerators
    Irradiation
    Radiation
    irradiation
    Neutrons
    radiation
    Radioactive Waste
    neutrons
    radioactive wastes
    Liquid nitrogen
    Radioactive wastes
    liquid nitrogen
    maintenance

    Keywords

    • High-temperature superconductors
    • Neutron radiation effects

    ASJC Scopus subject areas

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

    Cite this

    Effect of neutron irradiation on high-temperature superconductors. / Aoki, Toru; Ueda, Hiroshi; Ishiyama, Atsushi; Miyahara, Nobuyuki; Kashima, Naoji; Nagaya, Shigeo.

    In: IEEE Transactions on Applied Superconductivity, Vol. 21, No. 3 PART 3, 5704166, 06.2011, p. 3200-3202.

    Research output: Contribution to journalArticle

    Aoki, T, Ueda, H, Ishiyama, A, Miyahara, N, Kashima, N & Nagaya, S 2011, 'Effect of neutron irradiation on high-temperature superconductors', IEEE Transactions on Applied Superconductivity, vol. 21, no. 3 PART 3, 5704166, pp. 3200-3202. https://doi.org/10.1109/TASC.2010.2101999
    Aoki, Toru ; Ueda, Hiroshi ; Ishiyama, Atsushi ; Miyahara, Nobuyuki ; Kashima, Naoji ; Nagaya, Shigeo. / Effect of neutron irradiation on high-temperature superconductors. In: IEEE Transactions on Applied Superconductivity. 2011 ; Vol. 21, No. 3 PART 3. pp. 3200-3202.
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