Development of 28 GHz Gyrotron for Cooperative ECH Study

T. Kariya, R. Minami, T. Imai, T. Kato, Hiroshi Idei, Kazuaki Hanada, H. Zushi, T. Numakura, Y. Endo, M. Ichimura

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    At the Plasma Research Center at University of Tsukuba, development of megawatt gyrotrons is being performed as a collaborative electron cyclotron heating (ECH) study with some research organizations. A 28 GHz 1 MW 1 s gyrotron has been developed to upgrade the GAMMA 10/PDX ECH systems. To improve the oscillation efficiency in high current regions, the magnetron injection gun (MIG) of the 28 GHz gyrotron has been modified. Output power of 1.25 MW has been achieved with this gyrotron. For the first step of the collaborative research between Tsukuba University and Kyushu University, the Tsukuba 28 GHz gyrotron was adapted to the Q-shu University Experiment with Steady-State Spherical Tokamak (QUEST) ECH system, and the plasma heating and current drive effect were demonstrated. We obtained successful results, including an electron cyclotron-driven plasma current of 66 kA in the QUEST plasma experiment. For the next step of the collaborative research, the design targets of a 2 MW 3 s and 0.4 MW continuous wave have been achieved in a design study of a new 28 GHz gyrotron.

    Original languageEnglish
    Pages (from-to)147-151
    Number of pages5
    JournalFusion Science and Technology
    Volume68
    Issue number1
    DOIs
    Publication statusPublished - Jul 1 2015

    Fingerprint

    electron cyclotron heating
    Cyclotrons
    Heating
    Electrons
    plasma currents
    Plasmas
    Gyrotrons
    Plasma heating
    cyclotron resonance devices
    plasma heating
    continuous radiation
    cyclotrons
    high current
    Experiments
    injection
    oscillations
    output
    electrons

    All Science Journal Classification (ASJC) codes

    • Civil and Structural Engineering
    • Nuclear and High Energy Physics
    • Nuclear Energy and Engineering
    • Materials Science(all)
    • Mechanical Engineering

    Cite this

    Development of 28 GHz Gyrotron for Cooperative ECH Study. / Kariya, T.; Minami, R.; Imai, T.; Kato, T.; Idei, Hiroshi; Hanada, Kazuaki; Zushi, H.; Numakura, T.; Endo, Y.; Ichimura, M.

    In: Fusion Science and Technology, Vol. 68, No. 1, 01.07.2015, p. 147-151.

    Research output: Contribution to journalArticle

    Kariya, T, Minami, R, Imai, T, Kato, T, Idei, H, Hanada, K, Zushi, H, Numakura, T, Endo, Y & Ichimura, M 2015, 'Development of 28 GHz Gyrotron for Cooperative ECH Study', Fusion Science and Technology, vol. 68, no. 1, pp. 147-151. https://doi.org/10.13182/FST14-848
    Kariya, T. ; Minami, R. ; Imai, T. ; Kato, T. ; Idei, Hiroshi ; Hanada, Kazuaki ; Zushi, H. ; Numakura, T. ; Endo, Y. ; Ichimura, M. / Development of 28 GHz Gyrotron for Cooperative ECH Study. In: Fusion Science and Technology. 2015 ; Vol. 68, No. 1. pp. 147-151.
    @article{2dc02dfefa4e4f04af356a259e32a3ef,
    title = "Development of 28 GHz Gyrotron for Cooperative ECH Study",
    abstract = "At the Plasma Research Center at University of Tsukuba, development of megawatt gyrotrons is being performed as a collaborative electron cyclotron heating (ECH) study with some research organizations. A 28 GHz 1 MW 1 s gyrotron has been developed to upgrade the GAMMA 10/PDX ECH systems. To improve the oscillation efficiency in high current regions, the magnetron injection gun (MIG) of the 28 GHz gyrotron has been modified. Output power of 1.25 MW has been achieved with this gyrotron. For the first step of the collaborative research between Tsukuba University and Kyushu University, the Tsukuba 28 GHz gyrotron was adapted to the Q-shu University Experiment with Steady-State Spherical Tokamak (QUEST) ECH system, and the plasma heating and current drive effect were demonstrated. We obtained successful results, including an electron cyclotron-driven plasma current of 66 kA in the QUEST plasma experiment. For the next step of the collaborative research, the design targets of a 2 MW 3 s and 0.4 MW continuous wave have been achieved in a design study of a new 28 GHz gyrotron.",
    author = "T. Kariya and R. Minami and T. Imai and T. Kato and Hiroshi Idei and Kazuaki Hanada and H. Zushi and T. Numakura and Y. Endo and M. Ichimura",
    year = "2015",
    month = "7",
    day = "1",
    doi = "10.13182/FST14-848",
    language = "English",
    volume = "68",
    pages = "147--151",
    journal = "Fusion Science and Technology",
    issn = "1536-1055",
    publisher = "American Nuclear Society",
    number = "1",

    }

    TY - JOUR

    T1 - Development of 28 GHz Gyrotron for Cooperative ECH Study

    AU - Kariya, T.

    AU - Minami, R.

    AU - Imai, T.

    AU - Kato, T.

    AU - Idei, Hiroshi

    AU - Hanada, Kazuaki

    AU - Zushi, H.

    AU - Numakura, T.

    AU - Endo, Y.

    AU - Ichimura, M.

    PY - 2015/7/1

    Y1 - 2015/7/1

    N2 - At the Plasma Research Center at University of Tsukuba, development of megawatt gyrotrons is being performed as a collaborative electron cyclotron heating (ECH) study with some research organizations. A 28 GHz 1 MW 1 s gyrotron has been developed to upgrade the GAMMA 10/PDX ECH systems. To improve the oscillation efficiency in high current regions, the magnetron injection gun (MIG) of the 28 GHz gyrotron has been modified. Output power of 1.25 MW has been achieved with this gyrotron. For the first step of the collaborative research between Tsukuba University and Kyushu University, the Tsukuba 28 GHz gyrotron was adapted to the Q-shu University Experiment with Steady-State Spherical Tokamak (QUEST) ECH system, and the plasma heating and current drive effect were demonstrated. We obtained successful results, including an electron cyclotron-driven plasma current of 66 kA in the QUEST plasma experiment. For the next step of the collaborative research, the design targets of a 2 MW 3 s and 0.4 MW continuous wave have been achieved in a design study of a new 28 GHz gyrotron.

    AB - At the Plasma Research Center at University of Tsukuba, development of megawatt gyrotrons is being performed as a collaborative electron cyclotron heating (ECH) study with some research organizations. A 28 GHz 1 MW 1 s gyrotron has been developed to upgrade the GAMMA 10/PDX ECH systems. To improve the oscillation efficiency in high current regions, the magnetron injection gun (MIG) of the 28 GHz gyrotron has been modified. Output power of 1.25 MW has been achieved with this gyrotron. For the first step of the collaborative research between Tsukuba University and Kyushu University, the Tsukuba 28 GHz gyrotron was adapted to the Q-shu University Experiment with Steady-State Spherical Tokamak (QUEST) ECH system, and the plasma heating and current drive effect were demonstrated. We obtained successful results, including an electron cyclotron-driven plasma current of 66 kA in the QUEST plasma experiment. For the next step of the collaborative research, the design targets of a 2 MW 3 s and 0.4 MW continuous wave have been achieved in a design study of a new 28 GHz gyrotron.

    UR - http://www.scopus.com/inward/record.url?scp=84940517609&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=84940517609&partnerID=8YFLogxK

    U2 - 10.13182/FST14-848

    DO - 10.13182/FST14-848

    M3 - Article

    AN - SCOPUS:84940517609

    VL - 68

    SP - 147

    EP - 151

    JO - Fusion Science and Technology

    JF - Fusion Science and Technology

    SN - 1536-1055

    IS - 1

    ER -