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Journal Articles

Validation of the distribution of stripping loss neutrals in the accelerator of the negative ion source

K. Ikeda, M. Kisaki, H. Nakano, K. Tsumori, K. Nagaoka, Y. Fujiwara, S. Masaki, E. Rattanawongnara, M. Osakabe
Journal: AIP Conference Proceedings
AIP Conf. Proc. 2373, 060001 (2021)
https://doi.org/10.1063/5.0057443
Published: July 2021
View article titled, Validation of the distribution of stripping loss neutrals in the accelerator of the negative ion source
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Journal Articles

NIBS 2020 reference sheets

T. Sarmento, D. Wünderlich, U. Fantz, R. Friedl, D. Rauner, K. Tsumori, L. Shenjin, W. Chen, D. Bollinger, O. Hidetomo, K. Shinto, I. Draganic, R. F. Welton
Journal: AIP Conference Proceedings
AIP Conf. Proc. 2373, 110001 (2021)
https://doi.org/10.1063/5.0057732
Published: July 2021
View article titled, NIBS 2020 reference sheets
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Journal Articles

Damage to N-NBI systems due to positive ion back-streaming

M. Wada, T. Kenmotsu, K. Ikeda, M. Kisaki, H. Nakano, K. Tsumori
Journal: AIP Conference Proceedings
AIP Conf. Proc. 2373, 080001 (2021)
https://doi.org/10.1063/5.0057427
Published: July 2021
View article titled, Damage to N-NBI systems due to positive ion back-streaming
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Journal Articles

Development of the directional Langmuir probe for the charged particle flow measurement

S. Masaki, H. Nakano, M. Kisaki, E. Rattanawongnara, K. Nagaoka, K. Ikeda, Y. Fujiwara, M. Osakabe, K. Tsumori
Journal: AIP Conference Proceedings
AIP Conf. Proc. 2373, 090003 (2021)
https://doi.org/10.1063/5.0058837
Published: July 2021
View article titled, Development of the directional Langmuir probe for the charged particle flow measurement
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Journal Articles

A review of diagnostic techniques for high-intensity negative ion sources

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K. Tsumori, M. Wada
Journal: Applied Physics Reviews
Appl. Phys. Rev. 8, 021314 (2021)
https://doi.org/10.1063/5.0042498
Published: May 2021
View article titled, A review of diagnostic techniques for high-intensity negative ion sources
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Journal Articles

Study of correlation between plasma parameter and beam optics

M. Kisaki, H. Nakano, K. Tsumori, K. Ikeda, S. Masaki, Y. Haba, Y. Fujiwara, K. Nagaoak, M. Osakabe
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 91, 023503 (2020)
https://doi.org/10.1063/1.5131102
Published: February 2020
View article titled, Study of correlation between plasma parameter and beam optics
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Journal Articles

Spatial distribution of negative ion density near the plasma grid

S. Masaki, H. Nakano, M. Kisaki, Y. Haba, K. Nagaoka, K. Ikeda, Y. Fujiwara, M. Osakabe, K. Tsumori
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 91, 013512 (2020)
https://doi.org/10.1063/1.5129705
Published: January 2020
View article titled, Spatial distribution of negative ion density near the plasma grid
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Journal Articles

Cavity ring-down spectroscopy system for the evaluation of negative hydrogen ion density at the ELISE test facility

A. Mimo, H. Nakano, C. Wimmer, D. Wünderlich, U. Fantz, K. Tsumori
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 91, 013510 (2020)
https://doi.org/10.1063/1.5129341
Published: January 2020
View article titled, Cavity ring-down spectroscopy system for the evaluation of negative hydrogen ion density at the ELISE test facility
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Journal Articles

Extension of high power deuterium operation of negative ion based neutral beam injector in the large helical device

K. Ikeda, K. Tsumori, K. Nagaoka, H. Nakano, M. Kisaki, Y. Fujiwara, S. Kamio, Y. Haba, S. Masaki, M. Osakabe
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 90, 113322 (2019)
https://doi.org/10.1063/1.5128529
Published: November 2019
View article titled, Extension of high power deuterium operation of negative ion based neutral beam injector in the large helical device
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Journal Articles

Caesiated H- source operation with helium

K. Tsumori, M. Wada, H. Nakano, M. Kisaki, K. Ikeda, Y. Haba, K. Nagaoka, S. Kamio, Y. Fujiwara, M. Osakabe
Journal: AIP Conference Proceedings
AIP Conf. Proc. 2052, 040015 (2018)
https://doi.org/10.1063/1.5083749
Published: December 2018
View article titled, Caesiated H<sup>-</sup> source operation with helium
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Journal Articles

Study of the materials on plasma electrode surface for negative ion extraction in hydrogen and deuterium operation

S. Masaki, K. Maeshiro, K. Tsumori, M. Wada
Journal: AIP Conference Proceedings
AIP Conf. Proc. 2052, 020002 (2018)
https://doi.org/10.1063/1.5083720
Published: December 2018
View article titled, Study of the materials on plasma electrode surface for negative ion extraction in hydrogen and deuterium operation
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Journal Articles

Development of a dual beamlet monitor system for negative ion beam measurements

Y. Haba, K. Nagaoka, K. Tsumori, M. Kisaki, H. Nakano, K. Ikeda, Y. Fujiwara, S. Kamio, S. Yoshimura, M. Osakabe
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 89, 123303 (2018)
https://doi.org/10.1063/1.5056260
Published: December 2018
View article titled, Development of a dual beamlet monitor system for negative ion beam measurements
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Journal Articles

First results of deuterium beam operation on neutral beam injectors in the large helical device

K. Ikeda, K. Tsumori, M. Kisaki, H. Nakano, K. Nagaoka, M. Osakabe, S. Kamio, Y. Fujiwara, Y. Haba, Y. Takeiri
Journal: AIP Conference Proceedings
AIP Conf. Proc. 2011, 060002 (2018)
https://doi.org/10.1063/1.5053331
Published: September 2018
View article titled, First results of deuterium beam operation on neutral beam injectors in the large helical device
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Journal Articles

First measurements of beam plasma in NIFS test stand

E. Sartori, H. Nakano, P. Veltri, M. Kisaki, A. Pimazzoni, M. Brombin, V. Antoni, V. Cervaro, K. Ikeda, K. Tsumori, G. Serianni
Journal: AIP Conference Proceedings
AIP Conf. Proc. 2011, 080003 (2018)
https://doi.org/10.1063/1.5053358
Published: September 2018
View article titled, First measurements of beam plasma in NIFS test stand
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Journal Articles

Negative ion formation by proton reflection from a molybdenum surface at a shallow incidence angle

M. Sasao, T. Kanazawa, K. Doi, Y. Watanabe, K. Tanemura, S. Kato, T. Kenmotsu, M. Wada, H. Yamaoka, M. Kisaki, K. Tsumori
Journal: AIP Conference Proceedings
AIP Conf. Proc. 1869, 020008 (2017)
https://doi.org/10.1063/1.4995714
Published: August 2017
View article titled, Negative ion formation by proton reflection from a molybdenum surface at a shallow incidence angle
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Journal Articles

Negative ion formation from a low-work-function nanoporous inorganic electride surface

M. Sasao, K. Tanemura, M. Wada, K. Tsumori
Journal: AIP Conference Proceedings
AIP Conf. Proc. 1869, 020005 (2017)
https://doi.org/10.1063/1.4995711
Published: August 2017
View article titled, Negative ion formation from a low-work-function nanoporous inorganic electride surface
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Journal Articles

Physics-based investigation of negative ion behavior in a negative-ion-rich plasma using integrated diagnostics

K. Tsumori, Y. Takeiri, K. Ikeda, H. Nakano, S. Geng, M. Kisaki, K. Nagaoka, T. Tokuzawa, M. Wada, K. Sasaki, S. Nishiyama, M. Goto, M. Osakabe
Journal: AIP Conference Proceedings
AIP Conf. Proc. 1869, 030001 (2017)
https://doi.org/10.1063/1.4995721
Published: August 2017
View article titled, Physics-based investigation of negative ion behavior in a negative-ion-rich plasma using integrated diagnostics
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Journal Articles

Study of back streaming ion using a slot-type grounded grid in hydrogen negative-ion source

K. Ikeda, M. Kisaki, H. Nakano, K. Nagaoka, M. Osakabe, S. Kamio, K. Tsumori, S. Geng, Y. Takeiri
Journal: AIP Conference Proceedings
AIP Conf. Proc. 1869, 050004 (2017)
https://doi.org/10.1063/1.4995785
Published: August 2017
View article titled, Study of back streaming ion using a slot-type grounded grid in hydrogen negative-ion source
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Journal Articles

Upgraded millimeter-wave interferometer for measuring the electron density during the beam extraction in the negative ion source

T. Tokuzawa, M. Kisaki, K. Nagaoka, K. Tsumori, Y. Ito, K. Ikeda, H. Nakano, M. Osakabe, Y. Takeiri, O. Kaneko
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 87, 11E105 (2016)
https://doi.org/10.1063/1.4959841
Published: August 2016
View article titled, Upgraded millimeter-wave interferometer for measuring the electron density during the beam extraction in the negative ion source
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Journal Articles

Negative ion production and beam extraction processes in a large ion source (invited)

K. Tsumori, K. Ikeda, H. Nakano, M. Kisaki, S. Geng, M. Wada, K. Sasaki, S. Nishiyama, M. Goto, G. Serianni, P. Agostinetti, E. Sartori, M. Brombin, P. Veltri, C. Wimmer, K. Nagaoka, M. Osakabe, Y. Takeiri, O. Kaneko
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 87, 02B936 (2016)
https://doi.org/10.1063/1.4938254
Published: January 2016
View article titled, Negative ion production and beam extraction processes in a large ion source (invited)
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