Radiation Tolerance Evaluation of the Ti/Au Bilayer TES Microcalorimeter
Radiation Tolerance Evaluation of the Ti/Au Bilayer TES Microcalorimeter
复制标题
Ti/Au双层TES微量热仪的辐射耐受性评估
DOI：
10.1007/s10909-013-1058-4
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发表时间：
2014
影响因子：
2
通讯作者：
et al
中科院分区：
文献类型：
--
作者：
Y. Ishisaki;et al
我们为未来的 X 射线天体物理卫星任务（例如 DIOS）开发了钛/金双层过渡边缘传感器 (TES) 微量热计。 TES 微量热计在太空应用中可能存在的一个问题是它的辐射耐受性。我们评估了具有 1.5m 厚金吸收体的 Ti/Au 双层（30/40 nm 厚）TES 微量热计在总剂量为 10 krad（相当于在近地轨道运行 10 年）的 150 MeV 质子束照射前后的性能。没有观察到转变温度、灵敏度、正常电阻和临界电流的显着变化。 5.9 keV X射线的能量分辨率在照射后为5.60.3 eV（FWHM），比照射前的5.10.3 eV稍差。我们认为我们的TES在轨道上具有足够的辐射耐受性。
We have developed Ti/Au bilayer transition-edge sensor (TES) microcalorimeters for future X-ray astrophysical satellite missions such as DIOS. One possible concern on the space use of TES microcalorimeters is its radiation tolerance. We have evaluated the performance of a Ti/Au bilayer (30/40 nm thick) TES microcalorimeter with 1.5m thick Au absorber, before and after irradiation of 150 MeV proton beam with a total dose of 10 krad, corresponding to 10 years in the low Earth orbit. No significant changes on transition temperature, sensitivity, normal resistance, and critical current were observed. The energy resolution for 5.9 keV X-rays was 5.60.3 eV (FWHM) after the irradiation, which was slightly worse than 5.10.3 eV before the irradiation. We consider that our TES has sufficient radiation tolerance in orbit.