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Study on calibration of chromium CdTe detector using MCNP simulation and experimental methods

机译：MCNP模拟和实验方法研究铬镉碲检测器的标定

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摘要

In this paper, the energy linear scale and detection efficiency scale of a chromium telluride detector are studied. The high-purity germanium detector of the standard detector can accurately know the energy and intensity of the single energy peak, and then scale the energy linearity and detection efficiency of the chromium telluride detector. The linear correlation coefficient of the energy is close to 1. The efficiency curve of chromium telluride was obtained from MCke simulation from 6 keV to 150 keV. The experimental results were compared with the calculated results, and the relative deviation was within 1.2%.The device used in this experiment is a single crystal monochromator. Compared with the binary star monochromator, the single crystal monochromator has the characteristics of easy light emission, large flux, constant light output direction and stable stability. Different optical machine target materials will produce different energy spectra, and the energy spectrum shape determines the energy range and fluence of the generated single energy X-rays. After experimental testing, when the target material is a copper target, a higher fluence photon can be produced below 20 keV. The standard detector used is a high-purity germanium detector with high sensitivity and high energy resolution that has been scaled by the source.
机译：本文研究了碲化铬检测器的能量线性标度和检测效率标度。标准检测器的高纯度锗检测器可以准确知道单个能量峰的能量和强度，然后缩放碲化铬检测器的能量线性和检测效率。能量的线性相关系数接近1。通过从6keV到150keV的MCke模拟获得碲化铬的效率曲线。将实验结果与计算结果进行了比较，相对偏差在1.2％以内。本实验中使用的装置是单晶单色仪。与双星单色仪相比，该单晶单色仪具有发光容易，光通量大，出光方向恒定，稳定性稳定的特点。不同的光学机器目标材料将产生不同的能谱，并且能谱的形状决定了所产生的单能X射线的能范围和注量。经过实验测试，当靶材为铜靶材时，低于20 keV可以产生更高能量密度的光子。所使用的标准检测器是一种高纯度锗检测器，具有高灵敏度和高能量分辨率，并已按源进行了缩放。

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