Construction of negative-ion-based neutral beam teststand for Large Helical Device (LHD)

Y. Oka; A. Ando; O. Kaneko; Y. Takeiri; K. Tsumori; R. Akiyama; T. Kawamoto; K. Mineo; T. Kurata; T. Kuroda

doi:10.1109/FUSION.1991.218823

Construction of negative-ion-based neutral beam teststand for Large Helical Device (LHD)

Y. Oka, A. Ando, O. Kaneko, Y. Takeiri, K. Tsumori, R. Akiyama, T. Kawamoto, K. Mineo, T. Kurata, T. Kuroda

ENG - Electrical Engineering

National Institutes of Natural Sciences - National Institute for Fusion Science

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

A test stand for the negative-ion-based NBI (neutral beam injector) for the LHD, currently under construction, has neutral beam capabilities of 2.5 MW at a beam energy of 125 keV (H⁰)/250 keV (D⁰) and pulse duration of 10 s. Components being developed are as follows: (1) a large and high current negative ion source which is immersed in vacuum and composed of a compact modular ion source; (2) a beam dump to remove high heat flux up to 1.6 kW/cm²; (3) a high-pumping-speed (450 m³/s) cryopump; (4) a 250-kV power supply system using a GTO (gate turn-off thyristor); and (5) a controller system to vary the beam energy within 0.5 s.Testing will commence in the spring of 1992 at Toki new site.

Original language	English
Title of host publication	Proceedings - 14th IEEE/NPSS Symposium Fusion Engineering, FUSION 1991
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	70-73
Number of pages	4
ISBN (Electronic)	0780301323
DOIs	https://doi.org/10.1109/FUSION.1991.218823
Publication status	Published - 1991
Event	14th IEEE/NPSS Symposium Fusion Engineering, FUSION 1991 - San Diego, United States Duration: 1991 Sept 30 → 1991 Oct 3

Publication series

Name	Proceedings - Symposium on Fusion Engineering

Conference

Conference	14th IEEE/NPSS Symposium Fusion Engineering, FUSION 1991
Country/Territory	United States
City	San Diego
Period	91/9/30 → 91/10/3

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10.1109/FUSION.1991.218823

Cite this

Oka, Y., Ando, A., Kaneko, O., Takeiri, Y., Tsumori, K., Akiyama, R., Kawamoto, T., Mineo, K., Kurata, T., & Kuroda, T. (1991). Construction of negative-ion-based neutral beam teststand for Large Helical Device (LHD). In Proceedings - 14th IEEE/NPSS Symposium Fusion Engineering, FUSION 1991 (pp. 70-73). Article 218823 (Proceedings - Symposium on Fusion Engineering). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/FUSION.1991.218823

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title = "Construction of negative-ion-based neutral beam teststand for Large Helical Device (LHD)",

abstract = "A test stand for the negative-ion-based NBI (neutral beam injector) for the LHD, currently under construction, has neutral beam capabilities of 2.5 MW at a beam energy of 125 keV (H0)/250 keV (D0) and pulse duration of 10 s. Components being developed are as follows: (1) a large and high current negative ion source which is immersed in vacuum and composed of a compact modular ion source; (2) a beam dump to remove high heat flux up to 1.6 kW/cm2; (3) a high-pumping-speed (450 m3/s) cryopump; (4) a 250-kV power supply system using a GTO (gate turn-off thyristor); and (5) a controller system to vary the beam energy within 0.5 s.Testing will commence in the spring of 1992 at Toki new site.",

author = "Y. Oka and A. Ando and O. Kaneko and Y. Takeiri and K. Tsumori and R. Akiyama and T. Kawamoto and K. Mineo and T. Kurata and T. Kuroda",

note = "Publisher Copyright: {\textcopyright} 1991 IEEE.; 14th IEEE/NPSS Symposium Fusion Engineering, FUSION 1991 ; Conference date: 30-09-1991 Through 03-10-1991",

year = "1991",

doi = "10.1109/FUSION.1991.218823",

language = "English",

series = "Proceedings - Symposium on Fusion Engineering",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

pages = "70--73",

booktitle = "Proceedings - 14th IEEE/NPSS Symposium Fusion Engineering, FUSION 1991",

address = "United States",

}

Oka, Y, Ando, A, Kaneko, O, Takeiri, Y, Tsumori, K, Akiyama, R, Kawamoto, T, Mineo, K, Kurata, T & Kuroda, T 1991, Construction of negative-ion-based neutral beam teststand for Large Helical Device (LHD). in Proceedings - 14th IEEE/NPSS Symposium Fusion Engineering, FUSION 1991., 218823, Proceedings - Symposium on Fusion Engineering, Institute of Electrical and Electronics Engineers Inc., pp. 70-73, 14th IEEE/NPSS Symposium Fusion Engineering, FUSION 1991, San Diego, United States, 91/9/30. https://doi.org/10.1109/FUSION.1991.218823

Construction of negative-ion-based neutral beam teststand for Large Helical Device (LHD). / Oka, Y.; Ando, A.; Kaneko, O. et al.
Proceedings - 14th IEEE/NPSS Symposium Fusion Engineering, FUSION 1991. Institute of Electrical and Electronics Engineers Inc., 1991. p. 70-73 218823 (Proceedings - Symposium on Fusion Engineering).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Takeiri, Y.

AU - Tsumori, K.

AU - Akiyama, R.

AU - Kawamoto, T.

AU - Mineo, K.

AU - Kurata, T.

AU - Kuroda, T.

PY - 1991

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N2 - A test stand for the negative-ion-based NBI (neutral beam injector) for the LHD, currently under construction, has neutral beam capabilities of 2.5 MW at a beam energy of 125 keV (H0)/250 keV (D0) and pulse duration of 10 s. Components being developed are as follows: (1) a large and high current negative ion source which is immersed in vacuum and composed of a compact modular ion source; (2) a beam dump to remove high heat flux up to 1.6 kW/cm2; (3) a high-pumping-speed (450 m3/s) cryopump; (4) a 250-kV power supply system using a GTO (gate turn-off thyristor); and (5) a controller system to vary the beam energy within 0.5 s.Testing will commence in the spring of 1992 at Toki new site.

AB - A test stand for the negative-ion-based NBI (neutral beam injector) for the LHD, currently under construction, has neutral beam capabilities of 2.5 MW at a beam energy of 125 keV (H0)/250 keV (D0) and pulse duration of 10 s. Components being developed are as follows: (1) a large and high current negative ion source which is immersed in vacuum and composed of a compact modular ion source; (2) a beam dump to remove high heat flux up to 1.6 kW/cm2; (3) a high-pumping-speed (450 m3/s) cryopump; (4) a 250-kV power supply system using a GTO (gate turn-off thyristor); and (5) a controller system to vary the beam energy within 0.5 s.Testing will commence in the spring of 1992 at Toki new site.

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ER -

Oka Y, Ando A, Kaneko O, Takeiri Y, Tsumori K, Akiyama R et al. Construction of negative-ion-based neutral beam teststand for Large Helical Device (LHD). In Proceedings - 14th IEEE/NPSS Symposium Fusion Engineering, FUSION 1991. Institute of Electrical and Electronics Engineers Inc. 1991. p. 70-73. 218823. (Proceedings - Symposium on Fusion Engineering). doi: 10.1109/FUSION.1991.218823

Construction of negative-ion-based neutral beam teststand for Large Helical Device (LHD)

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