Absolute Energy Calibration of X-ray TESs with 0.04 eV Uncertainty at 6.4 keV in a Hadron-Beam Environment
Absolute Energy Calibration of X-ray TESs with 0.04 eV Uncertainty at 6.4 keV in a Hadron-Beam Environment
复制标题
强子束环境中 6.4 keV 不确定度为 0.04 eV 的 X 射线 TES 的绝对能量校准
DOI：
10.1007/s10909-016-1491-2
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发表时间：
2016
影响因子：
2
通讯作者：
for the HEATES collaboration
中科院分区：
文献类型：
--
作者：
H. Tatsuno;for the HEATES collaboration
本文介绍了在粒子加速器的π介子束线环境中超导过渡边缘传感器的性能评估。在阵列中的209个功能传感器上平均，当π介子束关闭时，在Co（6.9 keV）处实现的能量分辨率为5.2 eV FWHM，并且在1.45 MHz的束速率下实现的能量分辨率为7.3 eV。Fe（6.4 keV）的绝对能量不确定度为0.04 eV，由附近已知的X射线谱线进行了能量标定。为了实现这个小的不确定性，它是必不可少的，以考虑非高斯能量响应的TES和热串扰堆积效应，由于带电粒子击中硅基板的TES阵列。
A performance evaluation of superconducting transition-edge sensors (TESs) in the environment of a pion beam line at a particle accelerator is presented. Averaged across the 209 functioning sensors in the array, the achieved energy resolution is 5.2 eV FWHM at Co(6.9 keV) when the pion beam is off and 7.3 eV at a beam rate of 1.45 MHz. Absolute energy uncertainty of0.04 eV is demonstrated for Fe(6.4 keV) with in-situ energy calibration obtained from other nearby known X-ray lines. To achieve this small uncertainty, it is essential to consider the non-Gaussian energy response of the TESs and thermal cross-talk pile-up effects due to charged particle hits in the silicon substrate of the TES array.