Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Tanaka, Masaaki; Doda, Norihiro; Hamase, Erina; Kuwagaki, Kazuki; Mori, Takero; Okajima, Satoshi; Kikuchi, Norihiro; Yoshimura, Kazuo; Matsushita, Kentaro; Hashidate, Ryuta; et al.
Nihon Kikai Gakkai Rombunshu (Internet), 91(943), p.24-00229_1 - 24-00229_12, 2025/03
To assist conceptual studies of various reactor systems conducted by private sectors in nuclear power innovation, an innovative design system named ARKADIA (Advanced Reactor Knowledge- and AI-aided Design Integration Approach through the whole plant lifecycle) has been developed. In this paper, focusing on the ARKADIA-Design, achievements in the development of optimization processes in the fields of the core design, the plant structure design, and the maintenance schedule planning, as major function of ARKADIA-Design, and numerical analysis methods including coupled analysis to be used for the detailed analysis to confirm the plant performance after optimization are introduced at this point in time.
Tanaka, Masaaki; Doda, Norihiro; Hamase, Erina; Kuwagaki, Kazuki; Mori, Takero; Okajima, Satoshi; Kikuchi, Norihiro; Yoshimura, Kazuo; Matsushita, Kentaro; Hashidate, Ryuta; et al.
Dai-28-Kai Doryoku, Enerugi Gijutsu Shimpojiumu Koen Rombunshu (Internet), 5 Pages, 2024/06
To assist conceptual studies of various reactor systems conducted by private sectors in nuclear power innovation, development of an innovative design system named ARKADIA (Advanced Reactor Knowledge- and AI-aided Design Integration Approach through the whole plant lifecycle) is undergoing. In this paper, focusing on the ARKADIA-Design, achievements in the development of optimization processes in the fields of the core design, the plant structure design, and the maintenance schedule planning, as major function of ARKADIA-Design, and numerical analysis methods to be used for the detailed analysis to confirm the plant performance after optimization are introduced at this point in time.
Doda, Norihiro; Nakamine, Yoshiaki*; Kuwagaki, Kazuki; Hamase, Erina; Kikuchi, Norihiro; Yoshimura, Kazuo; Matsushita, Kentaro; Tanaka, Masaaki
Keisan Kogaku Koenkai Rombunshu (CD-ROM), 28, 5 Pages, 2023/05
As a part of the development of the "Advanced Reactor Knowledge- and AI-aided Design Integration Approach through the whole plant lifecycle (ARKADIA)" to automatically optimize the life cycle of innovative nuclear reactors including fast reactors, ARKADIA-design is being developed to support the optimization of fast reactor in the conceptual design stage. ARKADIA-Design consists of three systems (Virtual plant Life System (VLS), Evaluation assistance and Application System (EAS), and Knowledge Management System (KMS)). A design optimization framework controls the connection between the three systems through the interfaces in each system. This paper reports on the development of an optimization analysis control function that performs design optimization analysis combining plant behavior analysis by VLS and optimization study by EAS.
Ohshima, Hiroyuki; Morishita, Masaki*; Aizawa, Kosuke; Ando, Masanori; Ashida, Takashi; Chikazawa, Yoshitaka; Doda, Norihiro; Enuma, Yasuhiro; Ezure, Toshiki; Fukano, Yoshitaka; et al.
Sodium-cooled Fast Reactors; JSME Series in Thermal and Nuclear Power Generation, Vol.3, 631 Pages, 2022/07
This book is a collection of the past experience of design, construction, and operation of two reactors, the latest knowledge and technology for SFR designs, and the future prospects of SFR development in Japan. It is intended to provide the perspective and the relevant knowledge to enable readers to become more familiar with SFR technology.
Kawano, Yasunori; Itami, Kiyoshi; Kawahata, Kazuo*; Kusama, Yoshinori; Sasao, Mamiko*; Peterson, B.*; Mase, Atsushi*
Purazuma, Kaku Yugo Gakkai-Shi, 90(2), P. 164, 2014/02
no abstracts in English
Itami, Kiyoshi; Kawano, Yasunori; Kawahata, Kazuo*; Kusama, Yoshinori; Sasao, Mamiko*; Peterson, B.*; Mase, Atsushi*
Purazuma, Kaku Yugo Gakkai-Shi, 89(9), P. 638, 2013/09
no abstracts in English
Asakura, Nobuyuki; Ashikawa, Naoko*; Ueda, Yoshio*; Ono, Noriyasu*; Tanabe, Tetsuo*; Nakano, Tomohide; Masuzaki, Suguru*; Itami, Kiyoshi; Kawano, Yasunori; Kawahata, Kazuo*; et al.
Purazuma, Kaku Yugo Gakkai-Shi, 87(7), p.485 - 486, 2011/07
no abstracts in English
Ito, Naoki*; Mase, Atsushi*; Kogi, Yuichiro*; Seko, Noriaki; Tamada, Masao; Shimazu, Hiroshi*; Sakata, Eiji*
Japanese Journal of Applied Physics, 49(10), p.106506_1 - 106506_5, 2010/10
Times Cited Count：0 Percentile：0.00(Physics, Applied)As the importance of advanced millimeter-wave diagnostics increases, the fabrications of high-performance devices and components become essential. This paper describes the development of millimeter-wave planar antennas using low-loss fluorine substrates. The problems to be solved for the present purpose are the low degree of adhesion between copper foil and fluorine substrate and the accuracy of device pattern using conventional fabrication techniques. In order to solve these problems, surface treatment of fluorine films and a fabrication method using Electro-Fine-Forming (EF2) are proposed. In order to confirm the performance of the treated films, microstrip lines (MSL) and the planar patch antennas with low-sidelobe level in E-plane are designed and fabricated on the conventional fluorine substrates and on the grafted-PTFE (Polytetrafluoroethylene) films.
Kawano, Yasunori; Sasao, Mamiko*; Mase, Atsushi*; Kawahata, Kazuo*; Kusama, Yoshinori; Peterson, B.*; Itami, Kiyoshi
Purazuma, Kaku Yugo Gakkai-Shi, 86(9), P. 552, 2010/09
no abstracts in English
Osakabe, Masaki*; Shinohara, Koji; Toi, Kazuo*; Todo, Yasushi*; Hamamatsu, Kiyotaka; Murakami, Sadayoshi*; Yamamoto, Satoshi*; Idomura, Yasuhiro; Sakamoto, Yoshiteru; Tanaka, Kenji*; et al.
Purazuma, Kaku Yugo Gakkai-Shi, 85(12), p.839 - 842, 2009/12
no abstracts in English
Kawano, Yasunori; Sasao, Mamiko*; Mase, Atsushi*; Kawahata, Kazuo*; Kusama, Yoshinori; Peterson, B.*; Itami, Kiyoshi
Purazuma, Kaku Yugo Gakkai-Shi, 85(5), P. 314, 2009/05
The 15th meeting of international tokamak physics activity (ITPA) topical group on diagnostics was held in Ahmadabad, India, 17-20 November 2008. Fifty-three scientists participated the meeting (JA:2, IN:24, EU:17, US:3, RF:3, ITER Organization (IO):4). In 2008, ITPA was restructured to be the activity under the "auspice of ITER". Accordingly, the chair and the co-chair persons were newly appointed. Since it was the first meeting after the restructuring, new guidelines of activities in this topical group were discussed together with the progress of high priority items defined by this group and status of development of ITER diagnostics in ITER participant parties and IO. In this report, the outline of the meeting is presented.
Ito, Naoki*; Mase, Atsushi*; Kogi, Yuichiro*; Seko, Noriaki; Tamada, Masao; Sakata, Eiji*
JAEA-Review 2008-055, JAEA Takasaki Annual Report 2007, P. 42, 2008/11
no abstracts in English
Ito, Naoki*; Mase, Atsushi*; Kogi, Yuichiro*; Seko, Noriaki; Tamada, Masao; Sakata, Eiji*
Proceedings of 11th IEEE International Conference on Communication Technology (ICCT 2008), 3 Pages, 2008/11
As the importance of advanced microwave and millimeter-wave diagnostics increases, the fabrications of high-performance planar devices become essential. This paper describes the development of planar devices such as antennas using low-loss fluorine materials. The problems to be solved for the present purpose are the low degree of adhesion between copper foil and fluorine substrate and the accuracy of device pattern using conventional fabrication techniques. In order to solve these problems, surface treatment of fluorine films and a fabrication method using Electro-Fine-Forming (EF2) are proposed. The peel adhesion strength between the metal and the fluorine films and the value of dielectric constant of the fluorine films before and after grafting are reported. In order to confirm the performance of the treated films, microstrip lines are fabricated on the conventional fluorine substrates and on the grafted-PTFE (Polytetrafluoroethylene) films. The prototype antennas using fluorine substrates with EF2 fabrication technique are also introduced.
Kawano, Yasunori; Mase, Atsushi*; Sasao, Mamiko*; Kawahata, Kazuo*; Kusama, Yoshinori
Purazuma, Kaku Yugo Gakkai-Shi, 84(8), p.558 - 559, 2008/08
The 14th meeting on ITPA topical group on Diagnostics was held for 14-18 April 2008 at Swiss Federal Institute of Technology, Lausanne. The number of participants was sixty-three (JA: 9, CN: 2, EU: 42, US: 2, RF: 1, KO: 1, ITER Organization: 6). Recent activities of Specialist working groups on high priority areas for ITER diagnostics and progress in ITER participating parties for developments of fusion plasma diagnostics were presented and discussed. A special session was dedicated to discuss about the effects of reflection on vacuum vessel wall to optical diagnostics. Outline of the presentations and discussions at the meeting is reported here.
Kawahata, Kazuo*; Kawano, Yasunori; Kusama, Yoshinori; Mase, Atsushi*; Sasao, Mamiko*; Ide, Shunsuke; Oikawa, Toshihiro; Suzuki, Takahiro; Takase, Yuichi*; Nakamura, Yukio*; et al.
Purazuma, Kaku Yugo Gakkai-Shi, 84(5), p.297 - 298, 2008/05
no abstracts in English
Ito, Naoki*; Mase, Atsushi*; Kogi, Yuichiro*; Tateishi, Naoyuki*; Seko, Noriaki; Tamada, Masao; Sakata, Eiji*
JAEA-Review 2007-060, JAEA Takasaki Annual Report 2006, P. 37, 2008/03
no abstracts in English
Ito, Naoki*; Mase, Atsushi*; Kogi, Yuichiro*; Seko, Noriaki; Tamada, Masao; Shen, Z.*; Yang, L.*; Domier, C. W.*; Luhmann, N. C. Jr.*; Sakata, Eiji*
Plasma and Fusion Research (Internet), 2, p.S1042_1 - S1042_4, 2007/11
As the importance of plasma imaging diagnostics increases, the fabrication of high performance millimeter-wave planar components becomes essential. This paper describes the development of high performance millimeter-wave planar components such as antennas and filters using low-loss fluorine substrate. The problems to be solved are low degree of adhesion between copper foil and fluorine substrate and shape of antenna pattern. In order to solve the problems, surface treatment of fluorine films and a fabrication method using Electro Fine Forming (EF2) are utilized.
Sasao, Mamiko*; Kusama, Yoshinori; Kawano, Yasunori; Kawahata, Kazuo*; Mase, Atsushi*; Sugie, Tatsuo; Fujita, Takaaki; Fukuda, Takeshi*; Fukuyama, Atsushi*; Sakamoto, Yoshiteru; et al.
Purazuma, Kaku Yugo Gakkai-Shi, 83(9), p.779 - 782, 2007/09
This is a report of highlights from 2007 spring meetings of seven Topical Groups (TG) of International Tokamak Physics Activity (ITPA). In each meeting, high priority issues in physics of International Thermonuclear Experimental Reactor (ITER) and other burning plasma experiments have been discussed and investigated. Twenty-seven scientists from Japan have participated in those meetings. Dates and places of the meetings are shown below. (1) Diagnostics TG: 26-30 March, Princeton (USA), (2) Transport Physics TG: 7-10 May, Lausanne (Switzerland), (3) Confinement Database and Modeling TG: 7-10 May, Lausanne (Switzerland), (4) Edge Pedestal Physics TG: 7-10 May, Garching (Germany) (5) Steady State Operation TG: 9-11 May, Daejeon (South Korea), (6)MHD TG: 21-24 May, San Diego (USA), (7) Scrape-off-layer and Divertor Physics TG: 7-10 May, Garching (Germany).
Mase, Atsushi*; Kogi, Yuichiro*; Hojo, Hitoshi*; Yoshikawa, Masayuki*; Itakura, Akiyoshi*; Chujo, T.*; Tokuzawa, Tokihiko*; Kawahata, Kazuo*; Nagayama, Yoshio*; Oyama, Naoyuki; et al.
Fusion Science and Technology, 51(2T), p.52 - 57, 2007/02
Times Cited Count：3 Percentile：24.93(Nuclear Science & Technology)no abstracts in English
Sasao, Mamiko*; Yamada, Hiroshi*; Baba, Mamoru*; Kondoh, Takashi; Peterson, B. J.*; Kawahata, Kazuo*; Mase, Atsushi*; Yoshikawa, Masayuki*; Azechi, Hiroshi*; Toi, Kazuo*; et al.
Fusion Science and Technology, 51(2T), p.40 - 45, 2007/02
Times Cited Count：0 Percentile：0.00(Nuclear Science & Technology)Several unexplored physics issues will be studied in burning plasma experiments, planned on ITER in the near future. To carry out these studies, it is essential to develop novel diagnostic systems, such as fusion product measurement systems and high-resolution, high-reliability profile measurement of various plasma parameters. Scientific research on "Advanced Diagnostics for Burning Plasma Experiment" was assigned as a priority area by MEXT in 2004, and more than 20 studies are currently underway under this program. The feasibility of several new diagnostic concepts applicable to ITER is examined and diagnostic components for these systems are now under development.
