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Yamamoto, Keiichi; Takeuchi, Tomoaki; Hayashi, Takayasu*; Kosuge, Fumiaki*; Sano, Tadafumi*; Tsuchiya, Kunihiko
JAEA-Testing 2015-001, 25 Pages, 2015/11
Development of the reactor measurement system was started to obtain the real-time in-core nuclear and thermal information, where the quantitative measurement of brightness of Cherenkov light was investigated. This report was summarized the results of design and trial fabrication of the Cherenkov light estimation system from thermal power evaluation from Cherenkov light image emitted from the fuel elements. The developed Cherenkov light estimation system was verified with the Cherenkov light image emitted from the fuels in the core of Kyoto University Research Reactor (KUR). From the results, it is necessary to improve the observation method of Cherenkov light in the reactor and the evaluation method of the brightness of Cherenkov light. In future, the system will be applied for the evaluation of burn-up of spent fuels from the Cherenkov light emitted from the spent fuel assemblies in LWRs.
Takeuchi, Tomoaki; Yamamoto, Keiichi; Otsuka, Noriaki; Shibata, Hiroshi; Shibata, Akira; Takemoto, Noriyuki; Tsuchiya, Kunihiko; Sano, Tadafumi*; Unesaki, Hironobu*; Fujihara, Yasuyuki*; et al.
KURRI Progress Report 2014, P. 108, 2015/07
Investigation of a relation between output power and brightness of Cherenkov light of a specific fuel element at KUR by a CCD camera was performed due to a development of a real-time in-core measurement technique using Cherenkov light. The results indicate that the inhomogeneous distribution of output power and the shadow of the control-rod guide tubes and the other irradiation equipment have significant effects on the brightness of the Cherenkov light. These effects could be suppressed by using a number of cameras located at various positions.
Yamamoto, Keiichi; Takeuchi, Tomoaki; Sano, Tadafumi*; Homma, Ryohei*; Kimura, Nobuaki; Otsuka, Noriaki; Kosuge, Fumiaki*; Nakajima, Ken*; Tsuchiya, Kunihiko
JAEA-Technology 2014-028, 56 Pages, 2015/01
Development of the reactor measurement system was started to obtain real-time in-core nuclear and thermal information, where the quantity measurement of brightness of Cherenkov light was applied. The system would be applied as monitoring system in severe accidents and for advanced operation management technology in existing LWRs. In this report, the calculation and the observation results were summarized about the quantity of the Cherenkov light caused by the and ray emitted from the fuels in the core of Kyoto University Research Reactor.
Otsuka, Noriaki; Takeuchi, Tomoaki; Yamamoto, Keiichi; Shibata, Akira; Kimura, Nobuaki; Takemoto, Noriyuki; Tanimoto, Masataka; Tsuchiya, Kunihiko; Sano, Tadafumi*; Unesaki, Hironobu*; et al.
KURRI Progress Report 2013, P. 215, 2014/10
Investigation of a relation between reactor power and brightness of Cherenkov light at Kyoto University Research reactor (KUR) by a CCD camera was performed due to a development of a real-time in-core measurement technique using Cherenkov light. Analyzing the brightness value of individual RGB color component at each pixel, some of the G and B brightness values reached the maximum value of 8-bit binary number, i.e. 255, above about 2-3 MW. Therefore, we corrected the G and B brightness values by the R signals whose brightness value did not saturate even at 5 MW, the maximum reactor power of KUR. Then, the total brightness value was in proportion to the reactor power after the correction. These results indicate the reactor power can be estimated by the observation of Cherenkov light.
Nakayama, Masashi; Amano, Kenji; Tokiwa, Tetsuya; Yamamoto, Yoichi; Oyama, Takuya; Amano, Yuki; Murakami, Hiroaki; Inagaki, Daisuke; Tsusaka, Kimikazu; Kondo, Keiji; et al.
JAEA-Review 2012-035, 63 Pages, 2012/09
The Horonobe Underground Research Laboratory Project is planned to extend over a period 20 years. The investigations will be conducted in three phases, namely "Phase 1: Surface-based investigations", "Phase 2: Construction Phase" (investigations during construction of the underground facilities) and "Phase 3: Operation phase"(research in the underground facilities). This report summarizes the results of the investigations for the 2011 fiscal year (2011/2012). The investigations, which are composed of "Geoscientific research" and "R&D on geological disposal technology", were carried out according to "Horonobe Underground Research Laboratory Project Investigation Program for the 2011 Fiscal year". The results of these investigations, along with the results which were obtained in other departments of Japan Atomic Energy Agency (JAEA), are properly offered to the implementations and the safety regulations. For the sake of this, JAEA has proceeded with the project in collaboration with experts from domestic and overseas research organisations.
Tsuchiya, Kunihiko; Kitagishi, Shigeru; Nagao, Yoshiharu; Takemoto, Noriyuki; Naka, Michihiro; Kimura, Akihiro; Sano, Tadafumi*; Unesaki, Hironobu*; Yoshimoto, Takaaki*; Nakajima, Ken*; et al.
KURRI Progress Report 2009, P. 196, 2010/10
no abstracts in English
Ichinose, Yuji; *; Kawanishi, Shunichi; *; *
Chemistry Letters, 0(10), p.943 - 944, 1995/00
no abstracts in English
Kitatsuji, Yoshihiro; Meguro, Yoshihiro; Yoshida, Zenko; *; *
Solvent Extr. Ion Exch., 13(2), p.289 - 300, 1995/00
Times Cited Count:64 Percentile:90.86(Chemistry, Multidisciplinary)no abstracts in English
*; Kawanishi, Shunichi; Nishii, Masanobu; Sugimoto, Shunichi*; *
Japanese Journal of Applied Physics, 33(8), p.4764 - 4768, 1994/08
Times Cited Count:9 Percentile:50.67(Physics, Applied)no abstracts in English
*; Kawanishi, Shunichi; Nishii, Masanobu; Shimizu, Yuichi; Sugimoto, Shunichi; *; *
J. Photopolym. Sci. Technol., 6(3), p.385 - 392, 1993/00
no abstracts in English
*; *; *; Kawanishi, Shunichi; Shimizu, Yuichi; Sugimoto, Shunichi; Suzuki, Nobutake
Reza Kenkyu, 19(3), p.247 - 253, 1991/03
no abstracts in English
*; Nishii, Masanobu; Seguchi, Tadao; *; *
Radiation Physics and Chemistry, 37(2), p.213 - 216, 1991/00
no abstracts in English
Adachi, Takeo; ; *; ; *; Takeishi, Hideyo; Gunji, Katsubumi; Kimura, Takaumi; ; Nakahara, Yoshinori; et al.
Journal of Nuclear Materials, 174, p.60 - 71, 1990/00
Times Cited Count:40 Percentile:94.49(Materials Science, Multidisciplinary)no abstracts in English
Muromura, Tadasumi; Adachi, Takeo; Takeishi, Hideyo; Yoshida, Zenko; ;
Journal of Nuclear Materials, 151, p.318 - 326, 1988/00
no abstracts in English
Adachi, Takeo; Muromura, Tadasumi; Takeishi, Hideyo;
Journal of Nuclear Materials, 160, p.81 - 87, 1988/00
Times Cited Count:21 Percentile:85.65(Materials Science, Multidisciplinary)no abstracts in English
; *
Z.Anal.Chem., 294(4), P. 284, 1979/00
no abstracts in English
; ;
Bunseki Kagaku, 26(8), p.515 - 519, 1977/08
no abstracts in English
;
Kagaku, 30(8), p.646 - 649, 1975/08
no abstracts in English
; ; ;
Bunseki Kagaku, 23(6), p.672 - 674, 1974/06
no abstracts in English