Fueling experiments using neutral beam injection in the GAMMA 10 tandem mirror

Y. Nakashima; T. Kato; Y. Ishimoto; K. Orito; T. Natori; T. Fukasawa; K. Watanabe; S. Kobayashi; M. Shoji; Y. Kubota; E. Kawamori; M. Yoshikawa; I. Katanuma; M. Ichimura; T. Cho; K. Yatsu

doi:10.1016/S0022-3115(02)01453-8

Fueling experiments using neutral beam injection in the GAMMA 10 tandem mirror

Y. Nakashima, T. Kato, Y. Ishimoto, K. Orito, T. Natori, T. Fukasawa, K. Watanabe, S. Kobayashi, M. Shoji, Y. Kubota, E. Kawamori, M. Yoshikawa, I. Katanuma, M. Ichimura, T. Cho, K. Yatsu

Institute of Space and Plasma Sciences

Research output: Contribution to journal › Conference article › peer-review

12 Citations (Scopus)

Abstract

Recent results of fueling experiments in the GAMMA 10 tandem mirror using neutral beam injection are described. Neutral beam injectors (NBI) have been installed at the anchor-cells and central-cell for this purpose. Both anchor and central NBs are injected into a standard ICRF-heated hot-ion-mode plasmas and the increase of the electron line-density by 27% in the central-cell and 110% in the east anchor-cell is observed. Hα line-emission measured near the beam line of NBI indicates the enhancement of the neutrals in the periphery region of the beam line, which suggests the influx of cold gas from the ion source of NBI and the increase of hydrogen recycling due to the beam injection. An analysis of neutral particle transport using the DEGAS simulation code is developed to be able to calculate the spatial profile of neutral density in non-axisymmetric region. Detailed measurements of Hα line-emission from the central-cell to the east anchor-cell show the increase of particle source rate due to NBI and the obtained value occupies the total ionization rate by 29%.

Original language	English
Pages (from-to)	553-558
Number of pages	6
Journal	Journal of Nuclear Materials
Volume	313-316
Issue number	SUPPL.
DOIs	https://doi.org/10.1016/S0022-3115(02)01453-8
Publication status	Published - 2003 Mar
Event	Plasma - Surface Interactions in Controlled Fusion Devices - Gifu, Japan Duration: 2002 May 26 → 2002 May 31

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
General Materials Science
Nuclear Energy and Engineering

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10.1016/S0022-3115(02)01453-8

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Nakashima, Y., Kato, T., Ishimoto, Y., Orito, K., Natori, T., Fukasawa, T., Watanabe, K., Kobayashi, S., Shoji, M., Kubota, Y., Kawamori, E., Yoshikawa, M., Katanuma, I., Ichimura, M., Cho, T., & Yatsu, K. (2003). Fueling experiments using neutral beam injection in the GAMMA 10 tandem mirror. Journal of Nuclear Materials, 313-316(SUPPL.), 553-558. https://doi.org/10.1016/S0022-3115(02)01453-8

@article{f27ea3e1959244f39ffc59ad56786223,

title = "Fueling experiments using neutral beam injection in the GAMMA 10 tandem mirror",

abstract = "Recent results of fueling experiments in the GAMMA 10 tandem mirror using neutral beam injection are described. Neutral beam injectors (NBI) have been installed at the anchor-cells and central-cell for this purpose. Both anchor and central NBs are injected into a standard ICRF-heated hot-ion-mode plasmas and the increase of the electron line-density by 27% in the central-cell and 110% in the east anchor-cell is observed. Hα line-emission measured near the beam line of NBI indicates the enhancement of the neutrals in the periphery region of the beam line, which suggests the influx of cold gas from the ion source of NBI and the increase of hydrogen recycling due to the beam injection. An analysis of neutral particle transport using the DEGAS simulation code is developed to be able to calculate the spatial profile of neutral density in non-axisymmetric region. Detailed measurements of Hα line-emission from the central-cell to the east anchor-cell show the increase of particle source rate due to NBI and the obtained value occupies the total ionization rate by 29%.",

author = "Y. Nakashima and T. Kato and Y. Ishimoto and K. Orito and T. Natori and T. Fukasawa and K. Watanabe and S. Kobayashi and M. Shoji and Y. Kubota and E. Kawamori and M. Yoshikawa and I. Katanuma and M. Ichimura and T. Cho and K. Yatsu",

year = "2003",

month = mar,

doi = "10.1016/S0022-3115(02)01453-8",

language = "English",

volume = "313-316",

pages = "553--558",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier",

number = "SUPPL.",

note = "Plasma - Surface Interactions in Controlled Fusion Devices ; Conference date: 26-05-2002 Through 31-05-2002",

}

Nakashima, Y, Kato, T, Ishimoto, Y, Orito, K, Natori, T, Fukasawa, T, Watanabe, K, Kobayashi, S, Shoji, M, Kubota, Y, Kawamori, E, Yoshikawa, M, Katanuma, I, Ichimura, M, Cho, T & Yatsu, K 2003, 'Fueling experiments using neutral beam injection in the GAMMA 10 tandem mirror', Journal of Nuclear Materials, vol. 313-316, no. SUPPL., pp. 553-558. https://doi.org/10.1016/S0022-3115(02)01453-8

TY - JOUR

T1 - Fueling experiments using neutral beam injection in the GAMMA 10 tandem mirror

AU - Nakashima, Y.

AU - Kato, T.

AU - Ishimoto, Y.

AU - Orito, K.

AU - Natori, T.

AU - Fukasawa, T.

AU - Watanabe, K.

AU - Kobayashi, S.

AU - Shoji, M.

AU - Kubota, Y.

AU - Kawamori, E.

AU - Yoshikawa, M.

AU - Katanuma, I.

AU - Ichimura, M.

AU - Cho, T.

AU - Yatsu, K.

PY - 2003/3

Y1 - 2003/3

N2 - Recent results of fueling experiments in the GAMMA 10 tandem mirror using neutral beam injection are described. Neutral beam injectors (NBI) have been installed at the anchor-cells and central-cell for this purpose. Both anchor and central NBs are injected into a standard ICRF-heated hot-ion-mode plasmas and the increase of the electron line-density by 27% in the central-cell and 110% in the east anchor-cell is observed. Hα line-emission measured near the beam line of NBI indicates the enhancement of the neutrals in the periphery region of the beam line, which suggests the influx of cold gas from the ion source of NBI and the increase of hydrogen recycling due to the beam injection. An analysis of neutral particle transport using the DEGAS simulation code is developed to be able to calculate the spatial profile of neutral density in non-axisymmetric region. Detailed measurements of Hα line-emission from the central-cell to the east anchor-cell show the increase of particle source rate due to NBI and the obtained value occupies the total ionization rate by 29%.

AB - Recent results of fueling experiments in the GAMMA 10 tandem mirror using neutral beam injection are described. Neutral beam injectors (NBI) have been installed at the anchor-cells and central-cell for this purpose. Both anchor and central NBs are injected into a standard ICRF-heated hot-ion-mode plasmas and the increase of the electron line-density by 27% in the central-cell and 110% in the east anchor-cell is observed. Hα line-emission measured near the beam line of NBI indicates the enhancement of the neutrals in the periphery region of the beam line, which suggests the influx of cold gas from the ion source of NBI and the increase of hydrogen recycling due to the beam injection. An analysis of neutral particle transport using the DEGAS simulation code is developed to be able to calculate the spatial profile of neutral density in non-axisymmetric region. Detailed measurements of Hα line-emission from the central-cell to the east anchor-cell show the increase of particle source rate due to NBI and the obtained value occupies the total ionization rate by 29%.

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U2 - 10.1016/S0022-3115(02)01453-8

DO - 10.1016/S0022-3115(02)01453-8

M3 - Conference article

AN - SCOPUS:17444442988

SN - 0022-3115

VL - 313-316

SP - 553

EP - 558

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - SUPPL.

T2 - Plasma - Surface Interactions in Controlled Fusion Devices

Y2 - 26 May 2002 through 31 May 2002

ER -

Fueling experiments using neutral beam injection in the GAMMA 10 tandem mirror

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