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Collaborative Laboratories for Advanced Decommissioning Science; Okayama University*
JAEA-Review 2023-038, 48 Pages, 2024/03
The Collaborative Laboratories for Advanced Decommissioning Science (CLADS), Japan Atomic Energy Agency (JAEA), had been conducting the Nuclear Energy Science & Technology and Human Resource Development Project (hereafter referred to "the Project") in FY2022. The Project aims to contribute to solving problems in the nuclear energy field represented by the decommissioning of the Fukushima Daiichi Nuclear Power Station, Tokyo Electric Power Company Holdings, Inc. (TEPCO). For this purpose, intelligence was collected from all over the world, and basic research and human resource development were promoted by closely integrating/collaborating knowledge and experiences in various fields beyond the barrier of conventional organizations and research fields. The sponsor of the Project was moved from the Ministry of Education, Culture, Sports, Science and Technology to JAEA since the newly adopted proposals in FY2018. On this occasion, JAEA constructed a new research system where JAEA-academia collaboration is reinforced and medium-to-long term research/development and human resource development contributing to the decommissioning are stably and consecutively implemented. Among the adopted proposals in FY2022, this report summarizes the research results of the "Embedded system using a radiation-hardened processor" conducted in FY2022. The present study aims to be developing a radiation-hardened optoelectronic processor with a 10 MGy total-ionizing-dose (TID) tolerance, a radiation-hardened processor without any optical component with a 4 MGy TID tolerance, a radiation-hardened memory with a 4 MGy TID tolerance, and a radiation-hardened power supply unit with a 1 MGy TID tolerance. Moreover, Japanese research group will support radiation- hardened field programmable gate arrays, power supply units, and radiation-hardened optical systems for radiation-hardened robot systems and radiation sensor systems developed by UK team.
Collaborative Laboratories for Advanced Decommissioning Science; Okayama University*
JAEA-Review 2022-017, 56 Pages, 2022/08
The Collaborative Laboratories for Advanced Decommissioning Science (CLADS), Japan Atomic Energy Agency (JAEA), had been conducting the Nuclear Energy Science & Technology and Human Resource Development Project (hereafter referred to "the Project") in FY2020. The Project aims to contribute to solving problems in the nuclear energy field represented by the decommissioning of the Fukushima Daiichi Nuclear Power Station, Tokyo Electric Power Company Holdings, Inc. (TEPCO). For this purpose, intelligence was collected from all over the world, and basic research and human resource development were promoted by closely integrating/collaborating knowledge and experiences in various fields beyond the barrier of conventional organizations and research fields. The sponsor of the Project was moved from the Ministry of Education, Culture, Sports, Science and Technology to JAEA since the newly adopted proposals in FY2018. On this occasion, JAEA constructed a new research system where JAEA-academia collaboration is reinforced and medium-to-long term research/development and human resource development contributing to the decommissioning are stably and consecutively implemented. Among the adopted proposals in FY2019, this report summarizes the research results of the "Radiation tolerant rapid criticality monitoring with radiation-hardened FPGAs" conducted in FY2020. This research is developing a radiation-hardened optoelectronic FPGA with a 1 Grad total-ionizing-dose tolerance on which optical technologies are introduced onto a semiconductor technology and a radiation hardened FPGA with a 200 Mrad total-ionizing-dose tolerance not using any optical component. Moreover, Japanese research group will support hardware acceleration on FPGAs used for neutron-detection system developed by UK team.
Collaborative Laboratories for Advanced Decommissioning Science; Shizuoka University*
JAEA-Review 2020-059, 42 Pages, 2021/01
The Collaborative Laboratories for Advanced Decommissioning Science (CLADS), Japan Atomic Energy Agency (JAEA), had been conducting the Nuclear Energy Science & Technology and Human Resource Development Project (hereafter referred to "the Project") in FY2019. The Project aims to contribute to solving problems in the nuclear energy field represented by the decommissioning of the Fukushima Daiichi Nuclear Power Station, Tokyo Electric Power Company Holdings, Inc. (TEPCO). For this purpose, intelligence was collected from all over the world, and basic research and human resource development were promoted by closely integrating/collaborating knowledge and experiences in various fields beyond the barrier of conventional organizations and research fields. The sponsor of the Project was moved from the Ministry of Education, Culture, Sports, Science and Technology to JAEA since the newly adopted proposals in FY2018. On this occasion, JAEA constructed a new research system where JAEA-academia collaboration is reinforced and medium-to-long term research/development and human resource development contributing to the decommissioning are stably and consecutively implemented. Among the adopted proposals in FY2019, this report summarizes the research results of the "Radiation tolerant rapid criticality monitoring with radiation-hardened FPGAs". This research is developing a radiation-hardened optoelectronic FPGA with a 1 Grad total-ionizing-dose tolerance on which optical technologies are introduced onto a semiconductor technology and a radiation hardened FPGA with a 200 Mrad total-ionizing-dose tolerance not using any optical component. Moreover, Japanese research group will support hardware acceleration on FPGAs used for neutron-detection system developed by UK team. Finally, we will provide our radiation-hardened FPGA for the UK neutron-detection system.
Kojima, Takuji; Sunaga, Hiromi; Takizawa, Haruki*; Hanaya, Hiroaki; Tachibana, Hiroyuki*
Radiation Physics and Chemistry, 68(6), p.975 - 980, 2003/12
Times Cited Count:2 Percentile:19(Chemistry, Physical)Four kinds of film dosimeters well-characterized for low LET radiations were applied to 3-45 MeV/u ions. The dose responses relative to those for low LET radiations are almost one up to about 10 MeV/(mg/cm) and gradually become smaller with increase of the stopping power. Overall uncertainty in ion beam dosimetry using these characterized dosimeters is better than 5%(1) including uncertainty in fluence measurement(2%). Lateral and depth dose profile measurements were achievable using characterized Gafchromic dosimeters with the spatial resolution of better than 1 and 10 m, respectively.
Kai, Tetsuya; Harada, Masahide; Teshigawara, Makoto; Watanabe, Noboru; Ikeda, Yujiro
Proceedings of ICANS-XVI, Volume 3, p.657 - 666, 2003/07
Neutronic design studies were carried out on the J-PARC coupled H moderator. The highest time- and energy- integrated intensity below 15 meV, pulse peak intensity at 2 meV and 10 meV, were given by 100% para-H moderators, but the optimal moderator thickness was different for each: more than 220 mm, about 120 mm and 80 mm, respectively. Finally, we concluded 140 mm was the optimal thickness for the 100% para-H coupled moderator. Cold neutron distributions on the moderator viewed surface were found to exhibit an intensity-enhanced region at a picture frame part near premoderator. This rather peculiar distribution suggested that the moderator and the viewed surface must be designed so as to take the brighter region near premoderator in use. The intensity decreases along with beam-extraction angle to the normal direction down to about 70% at 25.4. Then, we propose a cylindrical shape coupled moderator which brings about a slight intensity decrease for 0 but a increase in the averaged intensity over the angles of interest.
Hara, Eiji*; Hamada, Kazuya; Kawano, Katsumi; Kato, Takashi; Shimba, Toru*; CS Model Coil Test Group
Teion Kogaku, 36(6), p.324 - 329, 2001/06
no abstracts in English
Saido, Masahiro; Fukuda, Mitsuhiro; Arakawa, Kazuo; Tajima, Satoshi; Sunaga, Hiromi; Yotsumoto, Keiichi; Kamiya, Tomihiro; Tanaka, Ryuichi; Hirao, Toshio; Nashiyama, Isamu; et al.
Proceedings of 1999 IEEE Nuclear and Space Radiation Effects Conference, p.117 - 122, 1999/00
no abstracts in English
Kameo, Yutaka; Aoki, Kazuhiro; ; Hirabayashi, Takakuni
Proc. of 1998 JAIF Int. Conf. on Water Chemistry in Nucl. Power Plants (Water Chemistry'98), p.571 - 574, 1998/00
no abstracts in English
*; Koizumi, Norikiyo; Ando, Toshinari; Tsuji, Hiroshi; Kuchiishi, Yoshikazu*; Asano, Katsuhiko*
JAERI-Research 97-044, 10 Pages, 1997/07
no abstracts in English
Takase, Kazuyuki; Kunugi, Tomoaki; Seki, Yasushi
Fusion Technology, 30(3(PT.2B)), p.1459 - 1464, 1996/12
no abstracts in English
Baba, Yuji; Yoshii, Kenji; Sasaki, Teikichi
Journal of Chemical Physics, 105(19), p.8858 - 8864, 1996/11
Times Cited Count:32 Percentile:72.81(Chemistry, Physical)no abstracts in English
JAERI-Review 96-012, 292 Pages, 1996/09
no abstracts in English
Chihara, Junzo;
Journal of Physics; Condensed Matter, 6, p.10221 - 10236, 1994/00
Times Cited Count:16 Percentile:70.11(Physics, Condensed Matter)no abstracts in English
*; Chihara, Junzo
Journal of Physics; Condensed Matter, 5, p.4315 - 4324, 1993/00
Times Cited Count:7 Percentile:42.58(Physics, Condensed Matter)no abstracts in English
Sugimoto, Makoto; Kato, Takashi; Kawano, Katsumi; Hiyama, Tadao; *; *; *; *; *; Okuno, Kiyoshi; et al.
Teion Kogaku, 27(3), p.239 - 244, 1992/00
no abstracts in English
*
JAERI-M 85-017, 298 Pages, 1985/03
no abstracts in English
; ; ; Tachikawa, Enzo
Journal of Radioanalytical Chemistry, 78(1), p.7 - 14, 1983/00
no abstracts in English
Progress of Theoretical Physics, 70(2), p.331 - 342, 1983/00
Times Cited Count:6 Percentile:55.69(Physics, Multidisciplinary)no abstracts in English
; *; Sanokawa, Konomo
Nihon Genshiryoku Gakkai-Shi, 23(7), p.470 - 476, 1981/00
Times Cited Count:0 Percentile:0.02(Nuclear Science & Technology)no abstracts in English
Nihon Genshiryoku Gakkai-Shi, 20(11), p.829 - 834, 1978/00
Times Cited Count:0no abstracts in English