Zobrazeno 1 - 10
of 4 443
pro vyhledávání: '"R Seki"'
Autor:
J. Varela, D. Spong, L. Garcia, Y. Ghai, J. Ortiz, FAR3d project collaborators, P. Adulsiriswad, N. Aiba, E. Ascasíbar, A. Azegami, A. Bader, M. Baruzzo, H. Betar, B. Breizman, J. Breslau, A. Cappa, W. A. Cooper, D. del-Castillo-Negrete, A. Di Siena, X. Du, L. G. Eliseev, J. Garcia, J. M. García-Regaña, N. Gorelenkov, L. Herrera, C. Hidalgo, J. Huang, M. Honda, I. Holod, K. Ida, M. Idouakass, F. Jenko, C. Jiale, Y. Kamada, Y. Kazakov, S. Kobayashi, U. Losada, S. Mazzi, A. Melnikov, B. Ph. Van Milligen, D. Monseev, M. Murakami, K. Nagaoka, K. Nagasaki, M. Ochando, J. Ongena, K. Ogawa, S. Ohdachi, M. Osakabe, D. C. Pace, F. Papousek, F. Poli, M. Podesta, P. Pons-Villalonga, M. Poradzinski, J. M. Reynolds-Barredo, R. Sanchez, R. Seki, S. Sharapov, K. Shinohara, J. Shiraishi, Z. Stancar, Y. Sun, Y. Suzuki, K. Tanaka, S. Taimourzadeh, Y. Takemura, Y. Todo, T. Tokuzawa, V. Tribaldos, M. A. Van Zeeland, F. L. Waelbroeck, X. H. Wang, K. Y. Watanabe, A. Wingen, S. Yamamoto, M. Yoshinuma, H. Yang, D. Zarzoso, Y. Zou
Publikováno v:
Frontiers in Physics, Vol 12 (2024)
The development of reduced models provide efficient methods that can be used to perform short term experimental data analysis or narrow down the parametric range of more sophisticated numerical approaches. Reduced models are derived by simplifying th
Externí odkaz:
https://doaj.org/article/b1c104b555ac44ea870b1023f6ba7daf
Autor:
H. Zhou, Y. Xu, M. Kobayashi, A. Shimizu, R. Seki, K. Tanaka, T. Tokuzawa, M. Yoshinuma, Y. Takemura, H. Takahashi, K. Ogawa, J. Cheng, W. Li, D.N. Wu, Y.J. Zhu, Y. Luo, Y.C. Li, J. Huang, X.Q. Wang, H.F. Liu, H. Liu, X. Zhang
Publikováno v:
Nuclear Fusion, Vol 64, Iss 3, p 036023 (2024)
Isotope effects have been investigated in Neutral Beam Injection (NBI) heated plasmas on the Large Helical Device with similar operational parameters between Hydrogen (H) and Deuterium (D) plasmas. Experimental results show that the global energy con
Externí odkaz:
https://doaj.org/article/50a23d87225142529bfd351c7c05818e
Degradation of fast-ion confinement depending on the neutral beam power in MHD quiescent LHD plasmas
Autor:
H. Nuga, R. Seki, K. Ogawa, H. Yamaguchi, S. Kamio, Y. Fujiwara, Y. Kawamoto, M. Yoshinuma, T. Kobayashi, Y. Takemura, M. Isobe, M. Osakabe, M. Yokoyama
Publikováno v:
Nuclear Fusion, Vol 64, Iss 6, p 066001 (2024)
We investigated the degradation of neutral beam (NB) fast-ion confinement depending on the NB power without magnetohydrodynamics instabilities in the Large Helical Device (LHD). In the LHD deuterium experiment, the neutron emission rate per NB power
Externí odkaz:
https://doaj.org/article/32751dd07d204fbea54ad72dc1715cb2
Autor:
K. Ida, M. Yoshinuma, M. Kobayashi, T. Kobayashi, N. Kenmochi, F. Nespoli, R.M. Magee, F. Warmer, A. Dinklage, A. Matsuyama, R. Sakamoto, T. Nasu, T. Tokuzawa, T. Kinoshita, K. Tanaka, N. Tamura, K. Nagaoka, M. Nishiura, Y. Takemura, K. Ogawa, G. Motojima, T. Oishi, Y. Morishita, J. Varela, W.H.J. Hayashi, M. Markl, H. Bouvain, Y. Liang, M. Leconte, D. Moseev, V.E. Moiseenko, C.G. Albert, I. Allfrey, A. Alonso, F.J. Arellano, N. Ashikawa, A. Azegami, L. Bardoczi, M. van Berkel, M. Beurskens, M.W. Binderbaue, A. Bortolon, S. Brezinsek, R. Bussiahn, A. Cappa, D. Carralero, I.C. Chan, J. Cheng, X. Dai, D.J. Den Hartog, C.P. Dhard, F. Ding, A. Ejiri, S. Ertmer, T. Fornal, K. Fujita, Y. Fujiwara, H. Funaba, L. Garcia, J.M. Garcia-Regana, I. Garcia-Cortés, I.E. Garkusha, D.A. Gates, Y. Ghai, E.P. Gilson, H. Gota, M. Goto, E.M. Green, V. Haak, S. Hamaguchi, K. Hanada, H. Hara, D. Hartmann, Y. Hayashi, T. Henning, C. Hidalgo, J. Hillairet, R. Hutton, T. Ido, H. Igami, K. Ikeda, S. Inagaki, A. Ishizawa, S. Ito, M. Isobe, Y. Isobe, M. Ivkovic, Z. Jiang, J. Jo, S. Kamio, H. Kasahara, D. Kato, Y. Katoh, Y. Kawachi, Y. Kawamoto, G. Kawamura, T. Kawate, Ye.O. Kazakov, V. Klumper, A. Knieps, W.H. Ko, S. Kobayashi, F. Koike, Yu.V. Kovtun, M. Kubkowska, S. Kubo, S.S.H. Lam, A. Langenberg, H. Laqua, S. Lazerson, J. Lestz, B. Li, L. Liao, Z. Lin, R. Lunsford, S. Masuzaki, H. Matsuura, K.J. McCarthy, D. Medina-Roque, O. Mitarai, A. Mollen, C. Moon, Y. Mori, T. Morisaki, S. Morita, K. Mukai, I. Murakami, S. Murakami, T. Murase, C.M. Muscatello, K. Nagasaki, D. Naujoks, H. Nakano, M. Nakata, Y. Narushima, A. Nagy, J.H. Nicolau, T. Nishizawa, S. Nishimoto, H. Nuga, M. Nunami, R. Ochoukov, S. Ohdachi, J. Ongena, M. Osakabe, N.A. Pablant, N. Panadero, B. Peterson, J. de la Riva Villén, J. Romazanov, J. Rosato, M. Rud, S. Sakakibara, H.A. Sakaue, H. Sakai, I. Sakon, M. Salewski, S. Sangaroon, S. Sereda, T. Stange, K. Saito, S. Satake, R. Seki, T. Seki, S. Sharapov, A. Shimizu, T. Shimozuma, G. Shivam, M. Shoji, D.A. Spong, H. Sugama, Z. Sun, C. Suzuki, Y. Suzuki, T. Tajima, E. Takada, H. Takahashi, K. Toi, Y. Tsuchibushi, N. Tsujii, K. Tsumori, T.I. Tsujimurai, G. Ueno, H. Uehara, J.L. Velasco, E. Wang, K.Y. Watanabe, T. Wauter, U. Wenzel, M. Yajima, H. Yamada, I. Yamada, K. Yanagihara, H. Yamaguchi, R. Yanai, R. Yasuhara, M. Yokoyama, Y. Yoshimura, M. Zarnstorff, M. Zhao, G.Q. Zhong, Q. Zhou, S. Ziaei, LHD Experiment Group, the W7-X Team
Publikováno v:
Nuclear Fusion, Vol 64, Iss 11, p 112009 (2024)
Recently, experiments on basic plasma physics issues for solving future problems in fusion energy have been performed on a Large Helical Device. There are several problems to be solved in future devices for fusion energy. Emerging issues in burning p
Externí odkaz:
https://doaj.org/article/493f2d046d6648a2b22107c6dc09b6c1
Publikováno v:
Nuclear Fusion, Vol 64, Iss 7, p 076010 (2024)
Energetic ion anisotropy was observed by tangential sightline compact neutron energy spectrometers (CNESs) in tangential neutral beam heated deuterium plasmas in Large Helical Device. Significant upper and lower energy shifts in D–D neutron energy
Externí odkaz:
https://doaj.org/article/7fd72c9b39ec42e6a0c1f8a23dcbb25e
Autor:
Yu.V. Kovtun, S. Kamio, V.E. Moiseenko, H. Kasahara, T. Seki, K. Saito, R. Seki, S. Masuzaki, S. Brezinsek, A. Dinklage
Publikováno v:
Nuclear Fusion, Vol 64, Iss 10, p 106044 (2024)
The results of the first experimental series to produce a plasma using the radio frequency discharge (RF) above the ion cyclotron frequency at relatively low magnetic fields (0.5–0.6 T) in the Large Helical Device (LHD) are presented 1.43 MW of RF
Externí odkaz:
https://doaj.org/article/1591ea072d244f11a21503652c47b2e9
Autor:
S. Sangaroon, K. Ogawa, M. Isobe, M. I. Kobayashi, Y. Fujiwara, S. Kamio, H. Yamaguchi, R. Seki, H. Nuga, E. Takada, S. Murakami, G. Q. Zhong, M. Osakabe
Publikováno v:
AAPPS Bulletin, Vol 32, Iss 1, Pp 1-8 (2022)
Abstract The compact neutron emission spectrometer (CNES) having a tangential sightline was installed to observe a significant Doppler shift of the neutron energy due to the high-energy tangential neutral beam (NB) injections in the Large Helical Dev
Externí odkaz:
https://doaj.org/article/098e8beb11cd43d1856b5c595e7df875
Autor:
Yu.V. Kovtun, H. Kasahara, V.E. Moiseenko, S. Kamio, T. Seki, K. Saito, R. Seki, A. Dinklage, D. Hartmann, H. Laqua, T. Stange, S. Lazerson, A. Alonso, T. Wauters, Ye. Kazakov, J. Ongena, I.E. Garkusha
Publikováno v:
Nuclear Fusion, Vol 63, Iss 10, p 106002 (2023)
This study aim is to develop further an ion cyclotron range of frequencies (ICRF) method of plasma production in stellarators based on the minority heating. The previous studies demonstrate production of low density plasma (9.5 × 10 ^17 m ^−3 ) at
Externí odkaz:
https://doaj.org/article/d2fee2a9582541909320296d29053c8f
Autor:
D. Du, K. Saito, J.G. Kwak, T. Seki, H. Kasahara, R. Seki, G. Nomura, Q.X. Yang, H. Zhou, S.X. Hu, Z.W. Huang, X.Y. Gong, Z.K. Gao, D. Xiang, M. Kanda
Publikováno v:
Nuclear Fusion, Vol 63, Iss 12, p 126027 (2023)
It is crucial to correctly predict the S -matrix with plasma and set the optimal impedance matching device in the ion cyclotron resonance heating (ICRH) antenna system design. In this paper, a hybrid circuit/3DLHDAP code to verify the S -matrix measu
Externí odkaz:
https://doaj.org/article/554db458bc1546c0a74b98923902fef1
Autor:
M. Kobayashi, S. Masuzaki, K. Tanaka, T. Tokuzawa, M. Yokoyama, Y. Narushima, I. Yamada, T. Ido, R. Seki
Publikováno v:
Nuclear Materials and Energy, Vol 17, Iss , Pp 137-141 (2018)
The core plasma confinement during detachment phase is investigated in the discharges with application of resonant magnetic perturbation (RMP) field in LHD. The RMP application creates a remnant magnetic island in the edge stochastic layer, which lar
Externí odkaz:
https://doaj.org/article/d623ec510ace49879f89499f001944c9