Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Yoshika Mitsunaka"'
Autor:
Ryosuke Ikeda, T. Eguchi, Yasuhisa Oda, Ken Kajiwara, Shinichi Moriyama, Takahiro Shinya, Taku Nakai, Koji Takahashi, S. Yajima, Keishi Sakamoto, Yoshika Mitsunaka, Takeru Ohgo, Takayuki Kobayashi
Publikováno v:
Nuclear Fusion. 61:106031
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e5601e2020c894c5075907e500aa8b9
https://doi.org/10.1088/1741-4326/ac21f7
https://doi.org/10.1088/1741-4326/ac21f7
Autor:
Yoshika Mitsunaka, C. Darbos, Yoshio Kawakami, Koji Takahashi, Ken Kajiwara, Ryosuke Ikeda, Kazuo Hayashi, T. Eguchi, Shinichi Moriyama, Takayuki Kobayashi, Keishi Sakamoto, Yasuhisa Oda, M. A. Henderson
Publikováno v:
Nuclear Fusion. 59:086014
This paper presents a summary of recent progress pertaining to the manufacturing and inspection of ITER gyrotrons and the operation system in QST. Major achievements are as follows. (i) The final design of the ITER gyrotron was accomplished and manuf
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::844209135931e418235ad88aa46a391c
https://doi.org/10.1088/1741-4326/ab22c2
https://doi.org/10.1088/1741-4326/ab22c2
Autor:
Hiroshi Idei, Takumi Onchi, Kazuaki Hanada, M. Ono, Fumiya Motoyoshi, Maki Okada, Kazunobu Nagasaki, Tsuyoshi Imai, Ryosuke Ikeda, Yoshika Mitsunaka, Tsuyoshi Kariya, Yasuhisa Oda, Ryutaro Minami, Keishi Sakamoto, Takashi Shimozuma, Hiroyuki R. Takahashi, Tomoharu Numakura, T. Eguchi, Yousuke Nakashima, Yasuo Yoshimura, Shin Kubo
Publikováno v:
Nuclear Fusion. 59:066009
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::22468beaf43f0f648e07d5e990f6c4eb
https://doi.org/10.1088/1741-4326/ab0e2c
https://doi.org/10.1088/1741-4326/ab0e2c
Autor:
Yoshika Mitsunaka, T. Numakura, H. Nakabayashi, Yuusuke Yamaguchi, Takashi Mutoh, Y. Yoshimura, Takashi Shimozuma, Hiroto Takahashi, R. Minami, Tsuyoshi Imai, T. Eguchi, Hiroe Igami, Y. Endo, Hideki Zushi, Satoshi Ito, Keishi Sakamoto, Hiroshi Idei, Tsuyoshi Kariya, Shin Kubo
The latest development achievements in the University of Tsukuba of over-1 MW power level gyrotrons required in present-day fusion devices, GAMMA 10, Large Helical Device (LHD), QUEST, Heliotron J and NSTX, are presented. The obtained maximum outputs
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bee7ae71b9338b016f1c057c81258d9c
https://ora.ox.ac.uk/objects/uuid:d74ca74d-8152-4b71-8c5b-9e3055bc4334
https://ora.ox.ac.uk/objects/uuid:d74ca74d-8152-4b71-8c5b-9e3055bc4334
A high efficiency quasi-optical (QO) mode converter for high-power, low-frequency gyrotron have been designed and tested. For low-frequency gyrotrons, the scales of the mode converter are comparatively small on the wavelength scale, thus causing sign
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::71e082ee21f0b0a86cf680beda3540c2
https://doi.org/10.1007/s10762-010-9719-8
https://doi.org/10.1007/s10762-010-9719-8
Autor:
Tsuyoshi Imai, Yoshika Mitsunaka, Youichi Endo, Takahashi Mutoh, Ryutaro Minami, Keishi Sakamoto, Shin Kubo, Yasuo Yoshimura, Tsuyoshi Kariya, Takahashi Shimozuma, Satoshi Ito, Hiromi Takahashi, Mao Ota
A 28 GHz 1 MW with TE 8,3 cavity for GAMMA10 tandem mirror and a 77 GHz 1.5 MW gyrotron with TE 18,6 for Large Helical Device (LHD) have been developed to upgrade their Electron Cyclotron Heating (ECH) systems. In the 28 GHz gyrotron, the maximum pow
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9cc761cef4d52cd117f28df1baf06a4d
https://ora.ox.ac.uk/objects/uuid:6321a3ab-7cfb-4234-9b23-45ea571755fc
https://ora.ox.ac.uk/objects/uuid:6321a3ab-7cfb-4234-9b23-45ea571755fc
Autor:
Hiroto Yasutake, H. Shidara, Hiromi Takahashi, Yoshika Mitsunaka, Tsuyoshi Kariya, Ryutaro Minami, Takashi Mutoh, Noritaka Murofushi, Keishi Sakamoto, Y. Okazaki, Y. Endo, Tsuyoshi Imai, Satoshi Ito, Shin Kubo, Yusuke Sakagoshi, Takashi Shimozuma
Publikováno v:
Fusion Science and Technology. 55:91-94
We are developing a new 28GHz 1MW and a 77GHz 1MW gyrotron for ECRH system of tandem mirror GAMMA10 and Large Helical Device (LHD), respectively. The detail design study of 28GHz 1MW gyrotron such as cavity, magnetron injection gun (MIG) has been don
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d34aa6c11f4962481961fe146b9617a
https://doi.org/10.13182/fst09-2t16
https://doi.org/10.13182/fst09-2t16
Autor:
Yoshika Mitsunaka, Yoshinori Tatematsu, Osamu Watanabe, M. Nakamura, Tsuyoshi Imai, T. Saito, N. Machida, T. Kaizuka, T. Cho, Keishi Sakamoto, T. Numakura, T. Kariya, R. Minami, Y. Kamata
Publikováno v:
Fusion Science and Technology. 51:208-212
In GAMMA 10, the upgrade program of high power plug and central ECRH have started for the study of the physics of plasma potential and the demonstration of high plasma performance proving the tandem mirror advantage. A new high power (upgrade) gyrotr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f2a1dcbd4932a71aa3d22b607def9e2
https://doi.org/10.13182/fst07-a1352
https://doi.org/10.13182/fst07-a1352
Publikováno v:
International Journal of Infrared and Millimeter Waves. 27:13-24
A high efficiency launcher of quasi-optical (QO) mode converters for high power gyrotrons have been designed and tested. A helical cut launcher radiates the RF power via its straight cut onto the first phase correcting mirror. The launchers have been
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68f15a3347aa6ac620bf3697b45be916
https://doi.org/10.1007/s10762-006-9078-7
https://doi.org/10.1007/s10762-006-9078-7
Autor:
Yoshika Mitsunaka, Y. Endo, Tsuyoshi Imai, Shin Kubo, T. Eguchi, T. Numakura, Yasuo Yoshimura, H. Nakabayashi, Takashi Shimozuma, Satoshi Ito, Hiroyuki R. Takahashi, Takashi Mutoh, Tsuyoshi Kariya, Keishi Sakamoto, R. Minami
Publikováno v:
Fusion Science and Technology. 63:265-267
At the Plasma Research Center (PRC) in University of Tsukuba, development of Mega-Watt Gyrotrons is performed for fusion research. Development of a new 154 GHz 1 MW gyrotron for ECRH system of Large Helical Device (LHD) has been done. The design stud
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9540f0f02e99a0a4fb5958280b2b9106
https://doi.org/10.13182/fst13-a16923
https://doi.org/10.13182/fst13-a16923