作者机构：
[于涛; 刘金聚; 谢金森; 谢芹; 陈珍平; 赵鹏程; 刘紫静; Zeng, Wenjie; 徐士坤] School of Nuclear Science and Technology, University of South China, Hengyang;Hunan;421001, China;Hunan Engineering andTechnology Research Center for Virtual Nuclear Reactor, University of South China, Hengyang;[于涛; 刘金聚; 谢金森; 谢芹; 陈珍平; 赵鹏程; 刘紫静; Zeng, Wenjie; 徐士坤] Hunan
作者机构：
[张泽寰; 宋英明; 毛婕] School of Nuclear Science and Technology, University of South China, Hengyang;Hunan;421001, China;[卢川; 唐松乾; 肖锋; 吕焕文; 杨俊云] Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu;610213, China
作者机构：
[邱小平] School of Nuclear Science and Technology, University of South China, Hengyang, 421001, China;[尹勇; 韩柱君; 巩贯忠; Qiu Q.] Department of Radiation Physics Technology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, 250117, China;[苏铭] Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, 250117, China
通讯机构：
[Gong, G.] D;Department of Radiation Physics Technology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
作者机构：
[Fu Jia; Lyu Bo; Bin Bin; Li Yichao; Wan Shunkuan; Zhang Hongming; Li Yingying; Wang Fudi; He Liang] Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China.;[Wang Xunyu; Yang Jin; Cao Jinjia; Gong Xueyu; He Liang] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Yu Qingjiang; Chen Jun] Univ Sci & Technol China, Dept Engn & Appl Phys, Hefei 230026, Peoples R China.
摘要：
Spectral measurement of tungsten (W) impurity is essential to study impurity transport. Therefore, an X-ray crystal spectrometer (XCS) on EAST was used to measure the line spectra from highly ionized W ions. On EAST, both poloidal XCS and tangential XCS have been developed to measure the plasma temperature as well as the rotation velocity. Recently, He-like and H-like argon spectra have also been obtained using a two-crystal setup. W lines are identified in this study. Through a careful analysis, the W lines of 3.9336, 3.9321, and 3.664 angstrom are found to be diffracted by He-like or H-like crystals. The lines are confirmed with the NIST database. We also calculated the ion temperature with Doppler broadening of these lines. The ion temperature from the W lines is entirely consistent with that from Ar line spectra. The measurement of these W line spectra could be used to study W impurity transport in future work.
作者机构：
[周毅; 刘仕超; 陈平; 李垣明; 辛勇; 刘振海; 张林; 谷明非; 赵艳丽] Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu;610213, China;[乐韵琳] School of Nuclear Science and Technology, University of South China, Hengyang;Hunan;421001, China
作者机构：
School of Physics and Technology, Wuhan University, Wuhan, 430072, China;[尹勇; 巩贯忠; 马星民] Radiation Physics Department of Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, 250117, China;[姚鑫森] School of Nuclear Science and Technology, University of South China, Hengyang, 421001, China;[任建新] School of Physics and Technology, Wuhan University, Wuhan, 430072, China, Radiation Physics Department of Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, 250117, China
通讯机构：
[Yin, Y.] R;Radiation Physics Department of Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
通讯机构：
[Yu, T.] S;School of Nuclear Science and Technology, China
关键词：
环形燃料芯块;温度场;稳态导热
摘要：
环形燃料芯块(Annular Fuel Pellets)具有较低的运行温度,能够实现更高的功率密度,已成为先进核反应堆燃料元件的发展方向之一。由于双面冷却环形元件存在流量分配和热量分配问题,实心圆柱燃料芯块的温度场求解方法无法求解环形燃料芯块温度场。建立了环形燃料芯块一维稳态温度场计算模型,开发了环形燃料芯块温度场计算程序PTFA(Program of Temperature Field of Annular Fuel Pellets),并计算了不同功率密度、不同芯块厚度下的绝热面位置、最高温度以及芯块的温度场分布。最后用有限元程序COMSOL5.4验证了不同芯块厚度下不同功率密度的环形燃料芯块的绝热面位置、最高温度以及芯块温度场分布。结果表明:环形燃料芯块一维稳态温度场计算模型计算的结果与有限元方法计算的结果吻合很好,相对偏差小于0.2%,该模型可以用于环形燃料元件的热工水力计算分析。
作者机构：
[曹奇锋; 张震宇; 陈珍平; 马辉强; 于涛] School of Nuclear Science and Technology, University of South China, Hengyang;Hunan;421001, China;Hunan Engineering and Technology Research Center for Virtual Nuclear Reactor, Hengyang;[曹奇锋; 张震宇; 陈珍平; 马辉强; 于涛] Hunan
