Achievement of one hour discharge with ECH on LHD

Y. Yoshimura; S. Kubo; T. Shimozuma; H. Igami; T. Mutoh; Y. Nakamura; K. Ohkubo; T. Notake; Y. Takita; S. Kobayashi; S. Ito; Y. Mizuno; S. Inagaki; M. Kojima; M. Kobayashi; S. Sakakibara; T. Tokuzawa; H. Nakanishi; K. Narihara; S. Masuzaki; J. Miyazawa; T. Morisaki; A. Komori; O. Motojima

doi:10.1088/1742-6596/25/1/024

Achievement of one hour discharge with ECH on LHD

Y. Yoshimura, S. Kubo, T. Shimozuma, H. Igami, T. Mutoh, Y. Nakamura, K. Ohkubo, T. Notake, Y. Takita, S. Kobayashi, S. Ito, Y. Mizuno, S. Inagaki, M. Kojima, M. Kobayashi, S. Sakakibara, T. Tokuzawa, H. Nakanishi, K. Narihara, S. MasuzakiJ. Miyazawa, T. Morisaki, A. Komori, O. Motojima

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24 Citations (Scopus)

Abstract

The potential of continuous plasma sustainment of Large Helical Device (LHD) was successfully demonstrated by a one hour discharge with 110 kW electron cyclotron heating (ECH) power. The ECH power of frequency 84 GHz generated by a continuous-work (CW) gyrotron is transmitted through an evacuated waveguide transmission line and injected to the LHD vacuum vessel using waveguide antenna. The plasma density was kept at about 1.5 × 10¹⁸/m³ and the electron temperature at the plasma center over 1 keV. Due to the low injection power the density was not so high but the plasma was quite stable. The power injection was terminated manually at 3900 seconds from the limitation of the setting of data acquisition, not for any troubles on devices.

Original language	English
Pages (from-to)	189-197
Number of pages	9
Journal	Journal of Physics: Conference Series
Volume	25
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/25/1/024
Publication status	Published - Jan 1 2005
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.1088/1742-6596/25/1/024

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Yoshimura, Y., Kubo, S., Shimozuma, T., Igami, H., Mutoh, T., Nakamura, Y., Ohkubo, K., Notake, T., Takita, Y., Kobayashi, S., Ito, S., Mizuno, Y., Inagaki, S., Kojima, M., Kobayashi, M., Sakakibara, S., Tokuzawa, T., Nakanishi, H., Narihara, K., ... Motojima, O. (2005). Achievement of one hour discharge with ECH on LHD. Journal of Physics: Conference Series, 25(1), 189-197. https://doi.org/10.1088/1742-6596/25/1/024

Yoshimura, Y, Kubo, S, Shimozuma, T, Igami, H, Mutoh, T, Nakamura, Y, Ohkubo, K, Notake, T, Takita, Y, Kobayashi, S, Ito, S, Mizuno, Y, Inagaki, S, Kojima, M, Kobayashi, M, Sakakibara, S, Tokuzawa, T, Nakanishi, H, Narihara, K, Masuzaki, S, Miyazawa, J, Morisaki, T, Komori, A & Motojima, O 2005, 'Achievement of one hour discharge with ECH on LHD', Journal of Physics: Conference Series, vol. 25, no. 1, pp. 189-197. https://doi.org/10.1088/1742-6596/25/1/024

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title = "Achievement of one hour discharge with ECH on LHD",

abstract = "The potential of continuous plasma sustainment of Large Helical Device (LHD) was successfully demonstrated by a one hour discharge with 110 kW electron cyclotron heating (ECH) power. The ECH power of frequency 84 GHz generated by a continuous-work (CW) gyrotron is transmitted through an evacuated waveguide transmission line and injected to the LHD vacuum vessel using waveguide antenna. The plasma density was kept at about 1.5 × 1018/m3 and the electron temperature at the plasma center over 1 keV. Due to the low injection power the density was not so high but the plasma was quite stable. The power injection was terminated manually at 3900 seconds from the limitation of the setting of data acquisition, not for any troubles on devices.",

author = "Y. Yoshimura and S. Kubo and T. Shimozuma and H. Igami and T. Mutoh and Y. Nakamura and K. Ohkubo and T. Notake and Y. Takita and S. Kobayashi and S. Ito and Y. Mizuno and S. Inagaki and M. Kojima and M. Kobayashi and S. Sakakibara and T. Tokuzawa and H. Nakanishi and K. Narihara and S. Masuzaki and J. Miyazawa and T. Morisaki and A. Komori and O. Motojima",

year = "2005",

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doi = "10.1088/1742-6596/25/1/024",

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T1 - Achievement of one hour discharge with ECH on LHD

AU - Yoshimura, Y.

AU - Kubo, S.

AU - Shimozuma, T.

AU - Igami, H.

AU - Mutoh, T.

AU - Nakamura, Y.

AU - Ohkubo, K.

AU - Notake, T.

AU - Takita, Y.

AU - Kobayashi, S.

AU - Ito, S.

AU - Mizuno, Y.

AU - Inagaki, S.

AU - Kojima, M.

AU - Kobayashi, M.

AU - Sakakibara, S.

AU - Tokuzawa, T.

AU - Nakanishi, H.

AU - Narihara, K.

AU - Masuzaki, S.

AU - Miyazawa, J.

AU - Morisaki, T.

AU - Komori, A.

AU - Motojima, O.

PY - 2005/1/1

Y1 - 2005/1/1

N2 - The potential of continuous plasma sustainment of Large Helical Device (LHD) was successfully demonstrated by a one hour discharge with 110 kW electron cyclotron heating (ECH) power. The ECH power of frequency 84 GHz generated by a continuous-work (CW) gyrotron is transmitted through an evacuated waveguide transmission line and injected to the LHD vacuum vessel using waveguide antenna. The plasma density was kept at about 1.5 × 1018/m3 and the electron temperature at the plasma center over 1 keV. Due to the low injection power the density was not so high but the plasma was quite stable. The power injection was terminated manually at 3900 seconds from the limitation of the setting of data acquisition, not for any troubles on devices.

AB - The potential of continuous plasma sustainment of Large Helical Device (LHD) was successfully demonstrated by a one hour discharge with 110 kW electron cyclotron heating (ECH) power. The ECH power of frequency 84 GHz generated by a continuous-work (CW) gyrotron is transmitted through an evacuated waveguide transmission line and injected to the LHD vacuum vessel using waveguide antenna. The plasma density was kept at about 1.5 × 1018/m3 and the electron temperature at the plasma center over 1 keV. Due to the low injection power the density was not so high but the plasma was quite stable. The power injection was terminated manually at 3900 seconds from the limitation of the setting of data acquisition, not for any troubles on devices.

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M3 - Article

AN - SCOPUS:29144486540

SN - 1742-6588

VL - 25

SP - 189

EP - 197

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

IS - 1

ER -

Achievement of one hour discharge with ECH on LHD

Abstract

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