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基于4 MV静电加速器的高温辐照装置研制及离子辐照初步实验
A High Temperature Irradiation Facility at SINAP’s 4 MV Electrostatic Accelerator and First Tests of the Ion Irradiation
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摘要: 为了模拟钍基熔盐堆(TMSR)材料的中子辐照损伤，基于中国科学院上海应用物理研究所(SINAP)的4 MV静电加速器，研制了一台专用的离子束辐照装置。装置主要由束流传输线和高温、高真空靶室组成。束流传输线装有用于束流磁场扫描和束流监测的设备。装置可提供H+，He+，Ar+等束流用于离子束辐照，束流最高能量4 MeV，最大流强2μA。辐照温度范围为液氮温度至950℃。辐照面积最大为30 mm×30 mm。装在靶室的由旋转铝片构成的变能器对束流能量进行调制，可以在样品中得到均匀的辐照损伤。初步的实验结果表明，装置适用于高温合金及其他熔盐堆材料的辐照损伤研究。Abstract: This paper describes the ion beam irradiation facility built up at the 4 MV electrostatic accelerator of Shanghai Institute of Applied Physics (SINAP), CAS for simulating neutron damage to thorium molten salt reactor (TMSR) material studies. The system mainly consists of a beam line containing the magnetic scanning device and the beam monitoring device, and the high temperature high vacuum chamber. H+, He+, Ar+ions(<4 MeV, 2 μA) from the accelerator are used for ion beam irradiation. The range of irradiation temperature is from the liquid nitrogen temperature to 950 ℃. The maximum irradiation field is equal to 30 mm×30 mm. Beam energy degrade with rotating aluminum foils is installed in the chamber, so that the uniformity damage can be obtained within a certain range of the target materials. The preliminary ion irradiation experiments showed that this facility is suitable for exploring radiation effects on the refractory metals as well as other potential TMSR materials.
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