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Sato, Fumiaki*; Moriyama, Shinichi; Yokokura, Kenji; Shinozaki, Shinichi; Hiranai, Shinichi; Suzuki, Yasuo*; Seki, Masami
Heisei-14-Nendo Tokyo Daigaku Sogo Gijutsu Kenkyukai Gijutsu Hokokushu, 3 Pages, 2003/03
no abstracts in English
Saigusa, Mikio*; Kikuchi, Yusuke*; Takei, Nahoko*; Kanazawa, Sadayoshi*; Kasugai, Atsushi; Sakamoto, Keishi; Imai, Tsuyoshi
Fusion Engineering and Design, 53(1-4), p.505 - 510, 2001/01
Times Cited Count：11 Percentile：61.99(Nuclear Science & Technology)no abstracts in English
Takahashi, Koji; Kajiwara, Ken; Kasugai, Atsushi; Isayama, Akihiko; Ikeda, Yoshitaka; Ide, Shunsuke; Sakamoto, Keishi; Imai, Tsuyoshi; Fujii, Tsuneyuki
Fusion Engineering and Design, 53(1-4), p.511 - 516, 2001/01
Times Cited Count：18 Percentile：76.49(Nuclear Science & Technology)no abstracts in English
Saigusa, Mikio*; Takei, Nahoko*; Kanazawa, Sadayoshi*; Kikuchi, Yusuke*; Kasugai, Atsushi; Sakamoto, Keishi; Imai, Tsuyoshi
Journal of Plasma and Fusion Research SERIES, Vol.3, p.383 - 386, 2000/00
no abstracts in English
Kajiwara, Ken; Kasugai, Atsushi; Takahashi, Koji; Ikeda, Yoshitaka; Imai, Tsuyoshi; Anno, Katsuto; Haga, Koichi*; Sakamoto, Keishi; Yokokura, Kenji; Shimono, Mitsugu; et al.
Journal of Plasma and Fusion Research SERIES, Vol.3, p.372 - 375, 2000/00
no abstracts in English
Sai, Takuma*; Matsubara, Fumiaki*; Ishida, Yoshitaka*; Saigusa, Mikio*; Kobayashi, Takayuki; Moriyama, Shinichi
no journal, ,
A wideband polarizer were developed for an electron cyclotron current driving system in JT-60SA. The wideband polarizer consists of a twister and a circular polarizers. The polarization properties of the twister was confirmed in cold tests. A high power test of the twister was carried out at an input power of 0.25 MW, 3 s at a frequency of 110 GHz. A new polarizer was designed for next high power tests. The circular polarizer of the different groove period was simulated by numerical simulations using a FDTD method.
Segawa, Tomoomi; Tanigawa, Masafumi; Kato, Yoshiyuki; Kawaguchi, Koichi; Ishii, Katsunori; Suzuki, Masahiro; Kitazawa, Toshihide*; Taguchi, Kenji*; Kashiwa, Tatsuya*
no journal, ,
For the purpose of improving the microwave heating denitration technology, the denitration characteristics of cobalt nitrate aqueous solutions as a simulated materials were analyzed and evaluated by using the microwave heating equipment whichi was controlled to circular polarized wave. Numerical simulation confirmed that the circular polarized wave controlled microwave irradiation uniformed the absorbed power distribution in the circumferential direction. Moreover, it was confirmed that the denitration proceeded uniformly even in the radial direction by the microwave heating denitration experiments of cobalt nitrate aqueous solutions. From these results, it was revealed that favorable heating and denitration characteristics can be obtained by the circularly polarized wave controlled microwave heating equipment.
Segawa, Tomoomi; Tanigawa, Masafumi; Kato, Yoshiyuki; Kawaguchi, Koichi; Ishii, Katsunori; Suzuki, Masahiro; Kitazawa, Toshihide*; Kashiwa, Tatsuya*
no journal, ,
To improve the handling and sinterability of raw powder of a uranium and plutonium mixed oxide produced in the reprocessing process of spent fuels, the microwave heating equipment has been developed considering the microwave property of linear polarization and circularly polarization that contribute to the uniformization of the microwave heating denitration by JAEA. The electromagnetic field simulation analysis was carried out by the Finite-Difference Time-Domain method, and the experimental results were evaluated. An analysis model was developed based on the obtained physical property data which were measured by the cylindrical cavity resonator method. The liquid phase state, microwave was concentrated on the upper surface and bottom surface due to the high loss of the cobalt nitrate aqueous solution, while in the solid phase state, microwave energy was absorbed inside. The absorption electric power distribution became uniform in the circumferential direction.
