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Neutron irradiation influence on high-power thyristor device under fusion environment

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摘要 Because of their economy and applicability,high-power thyristor devices are widely used in the power supply systems for large fusion devices.When high-dose neutrons produced by deuterium–tritium(D–T)fusion reactions are irradiated on a thyristor device for a long time,the electrical characteristics of the device change,which may eventually cause irreversible damage.In this study,with the thyristor switch of the commutation circuit in the quench protection system(QPS)of a fusion device as the study object,the relationship between the internal physical structure and external electrical parameters of the irradiated thyristor is established.Subsequently,a series of targeted thyristor physical simulations and neutron irradiation experiments are conducted to verify the accuracy of the theoretical analysis.In addition,the effect of irradiated thyristor electrical characteristic changes on the entire QPS is studied by accurate simulation,providing valuable guidelines for the maintenance and renovation of the QPS.
作者 Wei Tong Hua Li Meng Xu Zhi-Quan Song Bo Chen
机构地区 School of Electrical Engineering and Automation Institute of Plasma Physics University of Science and Technology of China
出处 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2024年第4期65-81,共17页 核技术（英文）
基金 supported by the Fundamental Research Funds for the Central University(No.JZ2023HGTA0182) Comprehensive Research Facility for Fusion Technology Program of China(No.2018-000052-73-01-001228)。
关键词 Fusion device Neutron irradiation effects THYRISTOR Quench protection
分类号 TL631.24 [核科学技术—核技术及应用]
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Nuclear Science and Techniques
2024年 第4期

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