核安全2025，Vol.24Issue(2)：30-35,6.
长脉冲托卡马克装置偏滤器第一壁结构安全仿真分析
Safety Simulation Analysis of the First Wall Structure of Divertor in Long-Pulse Tokamak Devices
齐坤宇 1王晓涛 1李雪琴 1曹磊2
作者信息
- 1. 生态环境部核与辐射安全中心,北京 100082
- 2. 中国科学院合肥物质科学研究院等离子体物理研究所,合肥 230031
- 折叠
摘要
Abstract
The divertor,as one of the critical components bearing the high thermal loads in long-pulse tokamak devices,significantly influences the structural integrity and operational reliability of the experimental setup through its mechanical behavior under high temperatures.To investigate the relationship between the structure and operational reliability of the plasma-facing first wall of the divertor,structural mechanics calculations were performed on the first wall of flat-type target plates in the divertor under cyclic thermal loads within the vacuum vessel,using the computational tool COMSOL Multiphysics.The calculations revealed that during cyclic thermal loading,compared to the tungsten directly facing the plasma and the chromium-zirconium-copper(CuCrZr)alloy serving as the heat-spreading layer,the copper interlayer between tungsten and CuCrZr experiences faster and more severe metal fatigue risks at localized positions,manifesting as metal interface debonding.The design of tungsten thickness directly affects the safety of the first wall structure of the target plate.After comprehensive consideration,it is concluded that designing the tungsten layer thickness of the flat-type divertor target plate within the range of 2 to 3 mm can maximize the safe lifespan.关键词
核聚变托卡马克/偏滤器平板型靶板/力学安全分析/第一壁厚度Key words
Tokamak for nuclear fusion/divertor flat-type target/mechanical safety analysis/first wall thickness引用本文复制引用
齐坤宇,王晓涛,李雪琴,曹磊..长脉冲托卡马克装置偏滤器第一壁结构安全仿真分析[J].核安全,2025,24(2):30-35,6.
