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Nakanoya, Takamitsu; Matsuda, Makoto; Fujii, Yoshio*
Proceedings of 2nd Annual Meeting of Particle Accelerator Society of Japan and 30th Linear Accelerator Meeting in Japan, p.729 - 730, 2005/07
TRIAC (Tokai Radioactive Ion Accelerator Complex) facility can accelerate both radioactive and stable ion beams up to 1.1Mev/u. In this facility, an ECR ion source is used for production of stable ion beams. Stable ion beams are used mainly as a pilot beam for radioactive ion beam. ECR ion source is required to produce many kinds of ion species, not only gas state elements. So, we developed a high temperature oven for obtaining metal ion beams. This paper describes the design and detail of the oven and experimental results.
estimator for VHTRC experimentSuzuki, Katsuo; Nabeshima, Kunihiko; Yamane, Tsuyoshi; Fujii, Yoshio*
Nihon Genshiryoku Gakkai Wabun Rombunshi, 2(4), p.408 - 417, 2003/12
On-line and real-time estimation of time-varying reactivity in a nuclear reactor is necessary for early detection of reactivity anomaly and safe operation. Using a digital nonlinear H
estimator, an experiment of real-time dynamic reactivity estimation was carried out in the VHTRC of JAERI. Some technical issues of the experiment are described, such as reactivity insertion, data sampling frequency, anti-aliasing filter, experimental circuit and digitalizing nonlinear H reactivity estimator, and so on. Then, we discussed the experimental results obtained by the digital nonlinear H estimator with sampled data of the nuclear instrumentation signal for the power responses under various reactivity insertions. Good performances of estimated reactivity were observed, with almost no delay to the true reactivity and sufficient accuracy between 0.05cent and 0.1cent. From the results of the experiment, it is concluded that the digital nonlinear H reactivity estimator can be applied as on-line real-time reactivity meter for actual nuclear plants.
Matsuda, Makoto; Fujii, Yoshio*; Takeuchi, Suehiro; Yoshida, Tadashi
Dai-15-Kai Tandemu Kasokuki Oyobi Sono Shuhen Gijutsu No Kenkyukai Hokokushu, p.62 - 64, 2003/03
no abstracts in English
Matsuda, Makoto; Takeuchi, Suehiro; Yoshida, Tadashi; Hanashima, Susumu; Fujii, Yoshio*
Dai-14-Kai Kasokuki Kagaku Kenkyu Happyokai Hokokushu, p.170 - 172, 2003/00
no abstracts in English
Matsuda, Makoto; Fujii, Yoshio*; Tayama, Hidekazu; Ishizaki, Nobuhiro; Abe, Shinichi; Hanashima, Susumu; Tsukihashi, Yoshihiro; Horie, Katsuzo; Ouchi, Isao; Kanda, Susumu; et al.
JNC TN7200 2001-001, p.166 - 168, 2002/01
no abstracts in English
Sakasai, Kaoru; Katagiri, Masaki; Kishimoto, Maki; Fujii, Yoshio
Reactor Dosimetry: Radiation Metrology and Assessment (ASTM STP 1398), p.775 - 780, 2001/00
no abstracts in English
Sakasai, Kaoru; Katagiri, Masaki; Kishimoto, Maki; Fujii, Yoshio
Proceedings of 7th International Conference on Nuclear Engineering (ICONE-7) (CD-ROM), 6 Pages, 1999/04
no abstracts in English
Fujii, Yoshio; Suzuki, Katsuo
JAERI-Tech 98-054, 65 Pages, 1998/12
no abstracts in English
Fujii, Yoshio; Suzuki, Katsuo
JAERI-Tech 97-071, 42 Pages, 1998/01
no abstracts in English
reactivity estimation methodFujii, Yoshio; Suzuki, Katsuo; Akino, Fujiyoshi; Yamane, Tsuyoshi; Fujisaki, Shingo; Takeuchi, Motoyoshi; Ono, Toshihiko
JAERI-Data/Code 96-001, 102 Pages, 1996/02
JAERI-Data-Code-96-001.pdf:2.32MB
no abstracts in English
Ishikawa, Nobuyuki; Suzuki, Katsuo; Fujii, Yoshio; Usui, Hozumi
The 3rd JSME/ASME Joint Int. Conf. on Nuclear Engineering (ICONE),Vol. 1, 0, p.449 - 454, 1995/00
no abstracts in English
Ishikawa, Nobuyuki; Fujii, Yoshio; Shinohara, Yoshikuni
Keisoku Jido Seigyo Gakkai Rombunshu, 30(8), p.984 - 986, 1994/00
no abstracts in English
Ishikawa, Nobuyuki; Fujii, Yoshio; Shinohara, Yoshikuni
JAERI-M 92-171, 24 Pages, 1992/11
no abstracts in English
Fujii, Yoshio; ; Suzuki, Katsuo; Suzudo, Tomoaki; Shinohara, Yoshikuni
JAERI-M 92-112, 64 Pages, 1992/08
no abstracts in English
Usui, Hozumi; Fujii, Yoshio; Shinohara, Yoshikuni
Journal of Nuclear Science and Technology, 28(8), p.767 - 776, 1991/08
no abstracts in English
Fujii, Yoshio; Usui, Hozumi; Shinohara, Yoshikuni
Journal of Nuclear Science and Technology, 28(7), p.670 - 677, 1991/07
no abstracts in English
Shinohara, Yoshikuni; Usui, Hozumi; Fujii, Yoshio
Journal of Nuclear Science and Technology, 28(6), p.547 - 554, 1991/06
no abstracts in English
Shinohara, Yoshikuni; Usui, Hozumi; Fujii, Yoshio
Nihon Robotto Gakkai-Shi, 9(3), p.323 - 334, 1991/06
no abstracts in English
; Suzuki, Katsuo; Fujii, Yoshio; Shinohara, Yoshikuni
JAERI-M 89-191, 25 Pages, 1989/11
no abstracts in English
Usui, Hozumi; Fujii, Yoshio; ; Shimazaki, Junya; Shinohara, Yoshikuni
JPDR Workshop,Vol. 1, 16 Pages, 1988/02
no abstracts in English
