Irradiation test of diagnostic components for ITER application in the Japan Materials Testing Reactor
Irradiation test of diagnostic components for ITER application in the Japan Materials Testing Reactor
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日本材料试验堆ITER应用诊断部件的辐照测试
DOI：
10.1088/0029-5515/43/7/301
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发表时间：
2003
期刊：
影响因子：
3.3
通讯作者：
K. Toh
中科院分区：
文献类型：
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作者：
T. Shikama;T. Nishitani;T. Kakuta;S. Yamamoto;S. Kasai;M. Narui;E. Hodgson;R. Reichle;B. Brichard;A. Krassilinikov;R. Snider;G. Vayakis;A. Costley;S. Nagata;B. Tsuchiya;K. Toh
在实现燃烧等离子体的核聚变系统中，元件和材料的辐射效应将是最重要的技术问题之一。特别是，诊断组件，这应该在控制等离子体和理解燃烧等离子体的物理学中发挥关键作用，将暴露于高通量中子和伽马射线。动态辐射效应会从暴露于辐射环境开始就对部件的性能产生实质性影响，并且累积的辐射效应会在部件的使用过程中逐渐降低其功能能力。目前，高功率密度裂变反应堆将是模拟国际热核实验反应堆（ITER）等燃烧等离子体聚变机器中预期发生的辐射环境的唯一现实工具。在裂变反应堆中对一些关键的诊断部件，即磁线圈、辐射热计和光纤进行了辐照测试，以评估它们在强辐射环境中的性能。结果表明，ITER相关的抗辐射诊断组件可以及时开发，但仍有一些技术问题需要克服。
Radiation effects in components and materials will be one of the most serious technological issues in nuclear fusion systems realizing burning-plasmas. Especially, diagnostic components, which should play a crucial role in controlling plasmas and understanding the physics of burning-plasmas, will be exposed to high-flux neutrons and gamma rays. Dynamic radiation effects will affect the performance of components substantially from the beginning of exposure to radiation environments, and accumulated radiation effects will gradually degrade their functioning abilities in the course of their service. High-power-density fission reactors will be the only realistic tools to simulate the radiation environments expected to occur in burning-plasma fusion machines such as the International Thermonuclear Experimental Reactor (ITER), at present. Some key diagnostic components, namely magnetic coils, bolometers, and optical fibres, were irradiation-tested in a fission reactor, to evaluate their performances in heavy radiation environments. Results indicate that ITER-relevant radiation-resistant diagnostic components could be developed in time, although there are still some technological problems to be overcome.