Multi-hole coupling power monitor with tapered sub-waveguide for dual-frequency high-power gyrotron

Authors: R. Yanai, T. Takeuchi, Y. Mizuno, Y. Yoshimura, M. Nishiura, H. Igami, H. Takahashi, T. Ii Tsujimura, N. Kenmochi

Source: AIP Advances, Vol 13, Iss 9, Pp 095105-095105-5 (2023)

Subject Terms: Physics, QC1-999

File Description: electronic resource

Relation: https://doaj.org/toc/2158-3226

Access URL: https://doaj.org/article/af5099d32f8c4cad851697674f0bef2f

Overview of the first Wendelstein 7-X long pulse campaign with fully water-cooled plasma facing components

Authors: O. Grulke, C. Albert, J.A. Alcuson Belloso, P. Aleynikov, K. Aleynikova, A. Alonso, G. Anda, T. Andreeva, M. Arvanitou, E. Ascasibar, E. Aymerich, K. Avramidis, J.-P. Bähner, S.-G. Baek, M. Balden, J. Baldzuhn, S. Ballinger, M. Banduch, S. Bannmann, A. Bañón Navarro, L. Baylor, C.D. Beidler, M. Beurskens, C. Biedermann, G. Birkenmeier, T. Bluhm, D. Boeckenhoff, D. Boeyaert, D. Bold, M. Borchardt, D. Borodin, H.-S. Bosch, H. Bouvain, S. Bozhenkov, T. Bräuer, H. Braune, C. Brandt, S. Brezinsek, K.J. Brunner, C. Büschel, R. Bussiahn, A. Buzás, B. Buttenschoen, V. Bykov, I. Calvo, A. Cappa, F. Carovani, D. Carralero, A. Carls, B. Carvalho, D. Castaño-Bardawil, N. Chaudhary, I. Chelis, S. Chen, D. Cipciar, J.W. Coenen, G. Conway, M. Cornelissen, Y. Corre, P. Costello, K. Crombe, G. Cseh, B. Csillag, H.I. Cu Castillo, G. Czymek, H. Damm, R.J. Davies, C. Day, S. Degenkolbe, R. De Wolf, W. Dekeyser, A. Demby, P. Despontin, C.P. Dhard, A. Dinklage, F.A. d’Isa, T. Dittmar, M. Dreval, M. Drevlak, P. Drews, J. Droste, D. Dunai, C. Dyhring, P. van Eeten, E. Edlund, M. Endler, D.A. Ennis, F.J. Escoto, M.S. Espinosa, T. Estrada, D. Fehling, L. Feuerstein, J. Fellinger, Y. Feng, D.L.C. Fernando, S. Fischer, E.R. Flom, O. Ford, T. Fornal, J. Frank, H. Frerichs, G. Fuchert, G. Gantenbein, Y. Gao, K. Garcia, I. García-Cortés, J.M. García-Regaña, B. Geiger, J. Geiger, P. Geissler, M. Gerard, G. Godino-Sedano, T. Gonda, A. González, A. Goriaev, D. Gradic, M. Grahl, H. Greuner, E. Grigore, M. Gruca, J.F. Guerrero Arnaiz, V. Haak, L. van Ham, K. Hammond, B. Hamstra, X. Han, S.K. Hansen, J. Harris, D. Hartmann, D. Hathiramani, S. Hegedus, S. Heinrich, P. Helander, F. Henke, S. Henneberg, L. Henschke, M. Hirsch, U. Hoefel, K. Hoefler, S. Hoermann, K.-P. Hollfeld, A. Holtz, D. Höschen, M. Houry, J. Huang, M. Hubeny, K. Hunger, D. Hwangbo, K. Ida, Y. Igitkhanov, S. Illy, Z. Ioannidis, M. Jablczynska, S. Jablonski, B. Jabłoński, B. Jagielski, M. Jakubowski, J. Jelonnek, F. Jenko, J. Jin, A. Johansson, G. Jouniaux, S. Kajita, J.-P. Kallmeyer, U. Kamionka, W. Kasparek, C. Kawan, Ye. O. Kazakov, N. Kenmochi, W. Kernbichler, A.K. Kharwandikar, M. Khokhlov, C. Killer, A. Kirschner, R. Kleiber, C.C. Klepper, T. Klinger, J. Knauer, A. Knieps, M. Kobayashi, G. Kocsis, Y. Kolesnichenko, A. Könies, J. Kontula, P. Kornejew, S.A. Korteweg, J. Koschinsky, J. Koster, Y. Kovtun, A. Krämer-Flecken, M. Krause, T. Kremeyer, L. Krier, D.M. Kriete, M. Krychowiak, I. Ksia¸zek, M. Kubkowska, M.D. Kuczyński, D. Kulla, A. Kumar, T. Kurki-Suonio, I. Kuzmych, S. Kwak, V. Lancelotti, A. Langenberg, H. Laqua, H.P. Laqua, M.R. Larsen, S. Lazerson, C. Lechte, B. Lee, A. LeViness, M. Lewerentz, Y. Liang, L. Liao, A. Litnovsky, J. Liu, J. Loizu, R. Lopez-Cansino, L.D. Lopez Rodriguez, A. Lorenz, R. Lunsford, Y. Luo, V. Lutsenko, N. Maaziz, M. Machielsen, R. Mackenbach, D. Makowski, E. Maragkoudakis, O. Marchuk, M. Markl, S. Marsen, J. Martínez, N. Marushchenko, S. Masuzaki, D.A. Maurer, M. Mayer, K.J. McCarthy, P. McNeely, D. Medina Roque, J. Meineke, S. Meitner, S. vaz Mendes, A. Menzel-Barbara, B. van Milligen, A. Mishchenko, V. Moiseenko, A. Möller, S. Möller, D. Moseev, G. Motojima, S. Mulas, P. Mulholland, M. Nagel, D. Nagy, Y. Narbutt, D. Naujoks, P. Nelde, R. Neu, O. Neubauer, U. Neuner, D. Nicolai, S. Nielsen, C. Nührenberg, R. Ochoukov, G. Offermanns, J. Ongena, J.W. Oosterbeek, M. Otte, N. Pablant, N. Panadero Alvarez, A. Pandey, G. Partesotti, E.A. Pasch, R. Pavlichenko, E. Pawelec, T.S. Pedersen, V. Perseo, B. Peterson, F. Pisano, B. Plaum, G. Plunk, L. Podavini, N.S. Polei, P. Poloskei, S. Ponomarenko, P. Pons-Villalonga, M. Porkolab, J. Proll, M.J. Pueschel, A. Puig Sitjes, R. Ragona, K. Rahbarnia, M. Rasiński, J. Rasmussen, D. Refy, F. Reimold, M. Richou, J.S. Riemann, K. Riße, J. de la Riva Villén, G. Roberg-Clark, E. Rodriguez, V. Rohde, J. Romazanov, T. Romba, D. Rondeshagen, M. Rud, T. Ruess, T. Rummel, A. Runov, C. Ruset, N. Rust, L. Ryc, T. Rzesnicki, M. Salewski, E. Sánchez, L. Sanchis Sanchez, G. Satheeswaran, J. Schacht, E. Scharff, J. Schilling, G. Schlisio, K. Schmid, J.C. Schmitt, O. Schmitz, M. Schneider, M. Van Schoor, T. Schröder, R. Schroeder, B. Schweer, S. Sereda, B. Shanahan, G. Sias, S. Simko, L. Singh, Y. Siusko, C. Slaby, M. Śle¸czka, B.S. Smith, D.R. Smith, H. Smith, M. Spolaore, A. Spring, T. Stange, A. von Stechow, I. Stepanov, M. Stern, U. Stroth, Y. Suzuki, C. Swee, L. Syrocki, T. Szabolics, T. Szepesi, R. Takacs, H. Takahashi, N. Tamura, C. Tantos, J. Terry, S. Thiede, H. Thienpondt, H. Thomsen, M. Thumm, T. Thun, S. Togo, T. Tork, H. Trimino Mora, A. Tsikouras, Y. Turkin, L. Vano, S. Varoutis, M. Vecsei, J.L. Velasco, M. Verstraeten, M. Vervier, E. Viezzer, J. Wagner, E. Wang, F. Wang, M. Wappl, F. Warmer, T. Wegner, Y. Wei, G. Weir, N. Wendler, U. Wenzel, A. White, F. Wilms, T. Windisch, A. Winter, V. Winters, R. Wolf, G. Wurden, P. Xanthopoulos, H.M. Xiang, S. Xu, H. Yamada, J. Yang, R. Yi, M. Yokoyama, B. Zamorski, M. Zanini, M. Zarnstorff, D. Zhang, S. Zhou, J. Zhu, J. Zimmermann, A. Zocco, S. Zoletnik

Source: Nuclear Fusion, Vol 64, Iss 11, p 112002 (2024)

Subject Terms: stellarator, long-pulse operation, magnetic fusion confinement, divertor detachment, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798

File Description: electronic resource

Relation: https://doaj.org/toc/0029-5515

Access URL: https://doaj.org/article/a05e816389844ac18f2fb63da24bc4a7

Overview of Large Helical Device experiments of basic plasma physics for solving crucial issues in reaching burning plasma conditions

Authors: 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

Source: Nuclear Fusion, Vol 64, Iss 11, p 112009 (2024)

Subject Terms: Large Helical Device, basic plasma physics, burning plasma, wave–particle interaction, ion mixing, turbulence spreading, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798

File Description: electronic resource

Relation: https://doaj.org/toc/0029-5515

Access URL: https://doaj.org/article/493f2d046d6648a2b22107c6dc09b6c1

Influence of sawtooth oscillations on fast ions in a stellarator

Authors: D. Moseev, M. Zanini, H. Kasahara, H.P. Laqua, H. Funaba, W.H.J. Hayashi, W. Heidbrink, K. Ida, H. Igami, Y. Kawamoto, N. Kenmochi, S.A. Lazerson, M. Nishiura, R. Ochoukov, K. Ogawa, M. Rud, M. Salewski, T. Seki, N. Tamura, K. Tanaka, T. Tokuzawa, M. Yoshinuma

Source: Nuclear Fusion, Vol 64, Iss 6, p 066028 (2024)

Subject Terms: stellarator, fast ions, sawtooth, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798

File Description: electronic resource

Relation: https://doaj.org/toc/0029-5515

Access URL: https://doaj.org/article/5b15320e9d834f2d9d7a23bf7d1a6bd3

Transition from electrostatic to electromagnetic modes of low-frequency fluctuations in RT-1

Authors: H. Saitoh, R. Nakagawa, K. Ueda, T. Mori, M. Nishiura, N. Kenmochi, N. Sato, Z. Yoshida

Source: Nuclear Fusion, Vol 64, Iss 12, p 126011 (2024)

Subject Terms: innovative confinement concept, magnetospheric configuration, levitated dipole, high-beta plasma, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798

File Description: electronic resource

Relation: https://doaj.org/toc/0029-5515

Access URL: https://doaj.org/article/e4815e7080604c0a8af5ae0e438019fa

Preceding propagation of turbulence pulses at avalanche events in a magnetically confined plasma

Authors: N. Kenmochi, K. Ida, T. Tokuzawa, R. Yasuhara, H. Funaba, H. Uehara, D. J. Den Hartog, I. Yamada, M. Yoshinuma, Y. Takemura, H. Igami

Source: Scientific Reports, Vol 12, Iss 1, Pp 1-9 (2022)

Subject Terms: Medicine, Science

File Description: electronic resource

Relation: https://doaj.org/toc/2045-2322

Access URL: https://doaj.org/article/e4fb845f0b06446981d21e8861f28f89

Publisher’s Note: 'Study of detached plasma profile in the divertor simulation experimental module of tandem mirror GAMMA 10/PDX' [AIP Advances 11, 125231 (2021)]

Authors: M. Yoshikawa, J. Kohagura, N. Ezumi, T. Iijima, K. Nojiri, A. Terakado, Y. Nakashima, T. Kariya, T. Numakura, M. Hirata, R. Minami, M. Sakamoto, M. Ichimura, M. S. Islam, Y. Shima, R. Yasuhara, I. Yamada, H. Funaba, T. Minami, N. Kenmochi, D. Kuwahara, H. J. van der Meiden

Source: AIP Advances, Vol 12, Iss 2, Pp 029902-029902-1 (2022)

Subject Terms: Physics, QC1-999

File Description: electronic resource

Relation: https://doaj.org/toc/2158-3226

Access URL: https://doaj.org/article/56908c430ecb4fdf98bb9c19fb875dba

A reduced-turbulence regime in the Large Helical Device upon injection of low-Z materials powders

Authors: F. Nespoli, K. Tanaka, S. Masuzaki, N. Ashikawa, M. Shoji, E.P. Gilson, R. Lunsford, T. Oishi, K. Ida, M. Yoshinuma, Y. Takemura, T. Kinoshita, G. Motojima, M. Osakabe, N. Kenmochi, G. Kawamura, C. Suzuki, A. Nagy, A. Bortolon, N.A. Pablant, A. Mollen, N. Tamura, D.A. Gates, T. Morisaki

Source: Nuclear Fusion, Vol 63, Iss 7, p 076001 (2023)

Subject Terms: stellarator, powder, turbulence, confinement, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798

File Description: electronic resource

Relation: https://doaj.org/toc/0029-5515

Access URL: https://doaj.org/article/0ff1aa5364f644e78031940c8e681e51

Study of detached plasma profile in the divertor simulation experimental module of tandem mirror GAMMA 10/PDX

Authors: M. Yoshikawa, J. Kohagura, N. Ezumi, T. Iijima, K. Nojiri, A. Terakado, Y. Nakashima, T. Kariya, T. Numakura, M. Hirata, R. Minami, M. Sakamoto, M. Ichimura, M. S. Islam, Y. Shima, R. Yasuhara, I. Yamada, H. Funaba, T. Minami, N. Kenmochi, D. Kuwahara, H. J. van der Meiden

Source: AIP Advances, Vol 11, Iss 12, Pp 125231-125231-6 (2021)

Subject Terms: Physics, QC1-999

File Description: electronic resource

Relation: https://doaj.org/toc/2158-3226

Access URL: https://doaj.org/article/6d9998b1cc6a42b4804416bb6a81209d

Experimental analysis of self-organized structure and transport on the magnetospheric plasma device RT-1.

Authors: M. Nishiura, Z. Yoshida, N. Kenmochi, T. Sugata, K. Nakamura, T. Mori, S. Katsura, K. Shirahata, J. Howard

Source: Nuclear Fusion; Sep2019, Vol. 59 Issue 9, p1-1, 1p

Subject Terms: MAGNETIC suspension, CYCLOTRON resonance, PLASMA devices

High-density experiments with hydrogen ice pellet injection and analysis of pellet penetration depth in Heliotron J.

Authors: G Motojima^1,2,3, motojima.gen@nifs.ac.jp, H Okada⁴, H Okazaki⁴, S Kobayashi⁴, K Nagasaki⁴, R Sakamoto^1,2, H Yamada^1,5, S Kado⁴, S Ohshima⁴, T Minami⁴, N Kenmochi⁵, Y Ohtani⁴, Y Nozaki⁴, Y Yonemura⁴, Y Nakamura⁶, S Konoshima⁴, S. Yamamoto⁴, T Mizuuchi⁴, K Y Watanabe¹

Source: Plasma Physics & Controlled Fusion; Jul2019, Vol. 61 Issue 7, p1-1, 1p

Observation of a beam-driven low-frequency mode in Heliotron J.

Authors: L.G. Zang, S. Yamamoto, D.A. Spong, K. Nagasaki, S. Ohshima, S. Kobayashi, T. Minami, X.X. Lu, N. Nishino, S. Kado, P. Adulsiriswad, H. Okada, N. Kenmochi, S. Inagaki, J.X. Zhu, G.M. Weir, T. Mizuuchi, S. Konoshima, A. Ishizawa, D.L. Yu

Source: Nuclear Fusion; May2019, Vol. 59 Issue 5, p1-1, 1p

Subject Terms: NEUTRAL beams, DOPPLER effect, ROTATIONAL motion

Suppression of fast-ion-driven MHD instabilities by ECH/ECCD on Heliotron J.

Authors: S. Yamamoto, K. Nagasaki, S. Kobayashi, K. Nagaoka, A. Cappa, H. Okada, T. Minami, S. Kado, S. Ohshima, S. Konoshima, Y. Nakamura, A. Ishizawa, G.M. Weir, N. Kenmochi, Y. Ohtani, X. Lu, Y. Tawada, D. Kokubu, T. Mizuuchi

Source: Nuclear Fusion; Dec2017, Vol. 57 Issue 12, p1-1, 1p

Subject Terms: MAGNETOHYDRODYNAMIC instabilities, PLASMA instabilities, ELECTRON cyclotron resonance heating, PLASMA beam injection heating, PLASMA currents, PLASMA flow

Ion cyclotron resonance heating system in the RT-1 magnetospheric plasma.

Authors: M. Nishiura, Y. Kawazura, Z. Yoshida, N. Kenmochi, Y. Yano, H. Saitoh, M. Yamasaki, T. Mushiake, A. Kashyap, N. Takahashi, M. Nakatsuka, A. Fukuyama

Source: Nuclear Fusion; Aug2017, Vol. 57 Issue 8, p1-1, 1p

Subject Terms: CYCLOTRON resonance, MAGNETOSPHERIC currents, LOW temperatures, ELECTRO-optical modulation, ELECTRIC fields

Characteristics of electron internal transport barrier in Heliotron J.

Authors: N Kenmochi¹ kenmochi@ppl.k.u-tokyo.ac.jp, T Minami², C Takahashi², S Mochizuki³, K Nishioka⁴, S Kobayashi², K Nagasaki², Y Nakamura³, H Okada², S Kado², S Yamamoto², S Ohshima², S Konoshima², G M Weir⁵, Y Otani³, T Mizuuchi²

Source: Plasma Physics & Controlled Fusion. 5/1/2017, Vol. 59 Issue 5, p1-1. 1p.

Subject Terms: *ELECTRON transport, *ELECTRON cyclotron resonance heating, *ELECTRON plasma, *ELECTRON density, *THERMAL diffusivity

Edge plasma responses to energetic-particle-driven MHD instability in Heliotron J.

Authors: S. Ohshima, S. Kobayashi, S. Yamamoto, K. Nagasaki, T. Mizuuchi, H. Okada, T. Minami, K. Hashimoto, N. Shi, L. Zang, K. Kasajima, N. Kenmochi, Y. Ohtani, Y. Nagae, K. Mukai, H.Y. Lee, H. Matsuura, M. Takeuchi, S. Konoshima, F. Sano

Source: Nuclear Fusion; Jan2016, Vol. 56 Issue 1, p1-1, 1p

Subject Terms: PLASMA boundary layers, MAGNETOHYDRODYNAMICS, PLASMA turbulence, PLASMA physics, PLASMA beam injection heating