Study of maintaining a steady burning plasma using a unified method of fluid and kinetic pictures

2021 Fiscal Year Final Research Report

• Project/Area Number: 17K07001
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Nuclear fusion studies
• Research Institution: Kyoto University (2021); National Institutes for Quantum and Radiological Science and Technology (2017-2020)
• Principal Investigator: Honda Mitsuru 京都大学, 工学研究科, 教授 (90455296)
• Project Period (FY): 2017-04-01 – 2022-03-31
• Keywords: 流体型輸送コード / トカマク / 新古典輸送 / 大域的最適化 / ニューラルネットワークモデル / 不純物輸送 / 統合シミュレーション / 準線形乱流輸送モデル

Outline of Final Research Achievements

The fluid-type transport code TASK/TX was used to study magnetic flux consumption and was extended to handle impurity particles. The TRESS+GKV code, which integrates fluid and kinetic methods, was restructured in MPMD to greatly improve readability and maintainability. A novel transport code GOTRESS was developed using global optimization methods with extremely high numerical stability. Taking advantage of its high affinity with deep learning methods, we succeeded in building a surrogate model for a transport model. A novel integrated model GOTRESS+ with GOTRESS as its core was developed, which contributed to the development of operating scenarios in JT-60SA.

Free Research Field

核融合プラズマシミュレーション

Academic Significance and Societal Importance of the Research Achievements

大型核融合装置で持続的な核融合反応をもたらす高温プラズマを維持するための複数の課題に、様々な手法で取り組んだ。不純物によるプラズマ冷却問題に取り組むためのプログラム開発や大型装置における運転シナリオを開発するためのプログラム開発などを行った。現在実験開始の直前段階にある大型核融合実験装置JT-60SAの定量的な予測を行ったほか、将来装置の安定した核燃焼プラズマの維持・制御に向けた能力の拡充を行った。