【IMPORTANT】T2R2 and STAR Search: Service Discontinuation and Successor Systems

Journal Paper

• Charlotte ORGONASI, Kenji Nishihara, Clara Luzieux, Takumi Abe, Tomohiro Okamura, Masahiko Nakase. Prediction of Plutonium content of BWR/MOX Fuel using a neural network, Annals of Nuclear Energy, Vol. 240, 112713, Aug. 2026.
• Tadafumi Niizato, Tomohiro Okamura, Kenji Ozone, Masahiko Nakase, Tatsuo Saito, Takao Ohi, Gento Kamei. Development Plan for a Generative AI-Based Technical Information Management System for Research Facility Waste Disposal, Journal of Earth Informatics, Vol. 37, No. 2, pp. 53-62, June 2026.
• Masahiko Nakase, Tomohiro Okamura, Takahiro Nishihara. Design and development of an informatics framework for actinide extractant discovery leveraging the IDEaL Database, Bulletin of the Laboratory for Zero-Carbon Energy, Laboratory for Zero-Carbon Energy, Institute of Integrated Research, Institute of Science Tokyo, Vol. 4, No. 2025, p. 27, Apr. 2026.
• Tomohiro Okamura, Takahiro Nishihara, Masahiko Nakase. TASKI: AI Based Nuclear Knowledge Management System, Bulletin of the Laboratory for Zero-Carbon Energy, Laboratory for Zero-Carbon Energy, Institute of Integrated Research, Institute of Science Tokyo, Vol. 4, No. 2025, p. 42, Apr. 2026.
• Takumi Abe, Taiga Suzuki, Tomohiro Okamura, Masahiko Nakase. Implementation of ideal cascade model for uranium enrichment to nuclear fuel cycle simulator, Annals of Nuclear Energy, Vol. 232, p. 112224, Feb. 2026.
• Andika Putra Dwijayanto, Kenji Nishihara, Tomohiro Okamura, Masahiko Nakase. Preliminary Design and Front-end Fuel Cycle Assessment of 200 MWt Marine Molten Chloride Fast Reactor, Annals of Nuclear Energy, Vol. 229, No. 2026, p. 112124, Jan. 2026.

International Conference (Not reviewed / Unknown)

• Kenji Takeshita, Tomohiro Okamura, Masahiko Nakase, Takashi Shimada, Yuki Kinishi, Keisuke Nishimura, Hitomi Ishida, Tomoo Yamamura. Nuclear Fuel Cycle Simulation for Actinide Management Towards Sustainable Nuclear Energy Use (2) Minor Actinide Management, GLOBAL2026, Aug. 2026.
• Tomohiro Okamura, Masahiko Nakase, Kenji Takeshita, Takashi Shimada, Yuki Konishi, Keisuke Nishimura, Hitomi Ishida, Tomoo Yamamura. Nuclear Fuel Cycle Simulation for Actinide Management Towards Sustainable Nuclear Energy Use (1) Uranium and Plutonium Management, GLOBAL2026, Aug. 2026.
• Kenji Nishihara, KENJI TAKESHITA, Takashi Shimada, Naoto Aizawa, Masahiko Nakase, Satoshi Wada, Shingo Wakasaki, Minefumi Matsui, Yoshiaki Yasunaga, Tomohiro Okamura, Takumi Abe, Manabu Yoshida, Hiroaki Nagano, Yoshio Kimura, Ayako Ono, Masatoshi Yamazaki, Masayuki Naganuma, Sou Watanabe, Tomoko Murakami, Tadafumi Koyama, Daisuke Watanabe, Sho Fuchita, Yuji Fukaya, Masako De Franco, Hiroshi SAGARA, Yoichiro Shimazu, Liem Peng Hong, Koji Fujikura. Benchmark Activity in Atomic Energy Society of Japan for Improvement of Reliability of Nuclear Fuel Cycle Simulators, TWoFCS2026 (The 7th Technical Workshop on Fuel Cycle Simulation 2026), Apr. 2026.  Official location  
• Alessio Rossi, Masahiko Nakase, Tomohiro Okamura, Kenji Nishihara. Towards a World Model of the Nuclear Fuel Cycle (1) From Past Reconstruction to Future Assessment of Fuel Demand, Waste Treatment and Strategic Stability, TWoFCS2026 (The 7th Technical Workshop on Fuel Cycle Simulation 2026), Apr. 2026.  Official location  
• Taiga Mitsuyuki, Tomohiro Okamura, Masahiko Nakase, Shinnosuke Wanaka. Strategic Roadmapping and Implementation Pathways for Nuclear-Powered Ships toward 2050 Net-Zero Shipping, TWoFCS2026 (The 7th Technical Workshop on Fuel Cycle Simulation 2026), Apr. 2026.  Official location  
• Andika Putra Dwijayanto, Kenji Nishihara, Tomohiro Okamura, Masahiko Nakase. Fuel Cycle Simulation for Marine Molten Chloride Fast Reactor: Verification and Case Study, TWoFCS2026 (The 7th Technical Workshop on Fuel Cycle Simulation 2026), Apr. 2026.  Official location  
• Tomohiro Okamura, Koki Ono, Taiga Suzuki, Takumi Abe, Takahiro Nishihara, Masahiko Nakase, Kenji Nishihara. NMB4 Validation Based on Historical Nuclear Power Plant Operating Records in Japan, TWoFCS2026 (The 7th Technical Workshop on Fuel Cycle Simulation 2026), Apr. 2026.  Official location  
• Masahiko Nakase, Charlotte Orgonasi, Tomohiro Okamura, Kenji Nishihara. Enhancing Economic Evaluation Frameworks for MOX Fuel Cycles through Machine Learning-Based Reactivity Prediction, TWoFCS2026 (The 7th Technical Workshop on Fuel Cycle Simulation 2026), Apr. 2026.  Official location  

Domestic Conference (Not reviewed / Unknown)

• Kenji Takeshita, Tomohiro Okamura, Masahiko Nakase. 原子燃料の安定供給に資する核燃料サイクル政策について, The 22nd Academic Conference of the Japan Society of Maintenology : Maintenology Supporting the Nuclear "Re-Renaissance", Sept. 2026.
• Andika Putra Dwijayanto, Tomohiro Okamura, Masahiko Nakase. Higher-Order Plutonium Transmutation Scenario in a 200 MWt Molten Chloride Fast Reactor with Thorium Additive, Atomic Energy Society of Japan 2026 Autumn Meeting, Sept. 2026.  Official location  
• Hidekazu Asano, Takahiro Nishihara, Tomohiro Okamura, Masahiko Nakase. TASKI:AIを基盤とした原子力ナレッジマネジメントシステム(6) 理系学部生向け地層処分講義の学習効果に関する教員採点とAIを活用した概念ネットワーク分析の比較, Atomic Energy Society of Japan 2026 Autumn Meeting, Sept. 2026.  Official location  
• Hisao Satoh, Tsuneyuki Maemura, Takahiro Nishihara, Masahiko Nakase, Tomohiro Okamura. オールジャパンで取り組む新しいオープンソース地球化学解析コードJPHASTの開発(3) 地下水－岩盤反応系を対象としたコードの機能確認, Atomic Energy Society of Japan 2026 Autumn Meeting, Sept. 2026.  Official location  
• Masahiko Nakase, Takahiro Nishihara, Tsuneyuki Maemura, Tomohiro Okamura, Hisao Satoh. オールジャパンで取り組む新しいオープンソース地球化学解析コードJPHASTの開発(1) 機能と開発目標、コミュニティ形成に向けて, Atomic Energy Society of Japan 2026 Autumn Meeting, Sept. 2026.  Official location  
• KENJI TAKESHITA, Tomohiro Okamura, Masahiko Nakase. 原子燃料の安定供給に必要な核燃料サイクルフロントエンドのプロセス構成, Atomic Energy Society of Japan 2026 Autumn Meeting, Sept. 2026.  Official location  
• Tomohiro Okamura, Takashi Shimada, Masahiko Nakase, Yasutoshi Ban, Tomoo Yamamura. 持続的な原子力利用のためのアクチノイドマネジメントを備えた燃料サイクルの研究(27) 高速炉サイクル移行期におけるプルトニウムマネジメント研究, Atomic Energy Society of Japan 2026 Autumn Meeting, Sept. 2026.  Official location  
• Takashi Shimada, Tomohiro Okamura, Masahiko Nakase, KENJI TAKESHITA, Hirotaka Konishi, Hiroki Tsukamoto, Yasutoshi Ban, Tomoo Yamamura. 持続的な原子力利用のためのアクチノイドマネジメントを備えた燃料サイクルの研究(26) 高速炉が燃料サイクル持続性、柔軟性に与える影響と課題, Atomic Energy Society of Japan 2026 Autumn Meeting, Sept. 2026.  Official location  
• Takahiro Nishihara, Masahiko Nakase, Tomohiro Okamura, Tsuneyuki Maemura, Hisao Satoh. オールジャパンで取り組む新しいオープンソース地球化学解析コードJPHASTの開発(2) AI統合型システム開発と将来展望：多様なコードを統合可能な解析プラットフォームの実現, Atomic Energy Society of Japan 2026 Autumn Meeting, Sept. 2026.  Official location  
• Andika Putra Dwijayanto, Tomohiro Okamura, Masahiko Nakase. Online or Offline? Evaluating the Refuelling Options for Marine Molten Chloride Fast Reactor, The 19th Student Research Presentation on AESJ Kanto-Koetsu Office, Mar. 2026.
• Alessio Rossi, Masahiko Nakase, Tomohiro Okamura, Kenji Nishihara, Kouki ONO. Towards a World Model of the Nuclear Fuel CycleFrom Past Reconstruction to Future Assessment of Fuel Demand, Waste Treatment and Strategic Stability, Atomic Energy Society of Japan 2026 Spring Annual Meeting, Mar. 2026.
• Takashi Shimada, Tomohiro Okamura, Masahiko Nakase, Kenji Takeshita, Keisuke Nishimura, Yuki Konishi, Hiroki Tsukamoto, Koki Hibi, Hiroyuki Moriwaki, Tomoo Yamamura. 持続的な原子力利用のためのアクチノイドマネジメントを備えた燃料サイクルの研究(23)軽水炉サイクルの課題解決の視点からの高速炉サイクルの要件１, Atomic Energy Society of Japan 2026 Spring Annual Meeting, Mar. 2026.
• Tomohiro Okamura, Masahiko Nakase, Takashi Shimada, Hiroki Tsukamoto, Yuki Konishi, Keisuke Nishimura, Tomoo Yamamura. 持続的な原子力利用のためのアクチノイドマネジメントを備えた燃料サイクルの研究(22)高速炉実証炉の諸量評価研究, Atomic Energy Society of Japan 2026 Spring Annual Meeting, Mar. 2026.
• Andika Putra Dwijayanto, Kenji Nishihara, Tomohiro Okamura, Masahiko Nakase. The Case for Pu-fuelled Molten Chloride Fast Reactor for Nuclear Marine Propulsion, Atomic Energy Society of Japan 2026 Spring Annual Meeting, Mar. 2026.
• Alessio Rossi, Masahiko Nakase, Tomohiro Okamura, Kenji Nishihara, Kouki ONO. Towards the World-Wide Modelling of the Nuclear Fuel Cycle, The 19th Student Research Presentation on AESJ Kanto-Koetsu Office, Mar. 2026.
• Alessio Rossi, Masahiko Nakase, Tomohiro Okamura, Kenji Nishihara, Kouki Ono. A World Model of the Nuclear Fuel Cycle From Past Reconstruction to Future Assessment of Fuel Demand, Waste Treatment and Strategic Stability, Atomic Energy Society of Japan 2026 Spring Annual Meeting, Mar. 2026.
• Takahiro Nishihara, Tomohiro Okamura, Hidekazu Asano, Masahiko Nakase. TASKI:AIを基盤とした原子力ナレッジマネジメントシステム(5)非構造データのナレッジベース化, Atomic Energy Society of Japan 2026 Spring Annual Meeting, Mar. 2026.
• Tomohiro Okamura, Masahiko Nakase. 事例紹介1, Tokyo University of Science Education Innovation Center Symposium 2026, Feb. 2026.
• Takashi Shimada, Tomohiro Okamura, Masahiko Nakase, Kenji Takeshita, Yuki Konishi, Keisuke Nishimura, Hiroki Tsukamoto, Tomoo Yamamura. アクチノイドマネジメントを備えた燃料サイクルの研究(1)MA分離・暫定保管の有効性評価, 19th Seminar of the Reprocessing and Recycle Technology Division on AESJ, Jan. 2026.

Other Publication

• Masahiko Nakase, Tomohiro Okamura, Takahiro Nishihara. TWoFCS2026/NuMBAC2026 Summary Report, TWoFCS2026/NuMBAC2026 Summary Report, Apr. 2026.  Official location  

Research Highlight

• Masahiko Nakase, Tomohiro Okamura, Kenji Takeshita, Kenji Nishihara, Takumi Abe. Organizer of the 7th Technical Workshop on Fuel Cycle Simulation 2026 TWoFCS2026 & NuMBAC2026. 2026-2026.

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