Determining the effect of relative size of sensor on calibration accuracy of TEM cells  

作　　者：Yun-Sheng Jiang Cui Meng Han-Bing Jin Ping Wu Zhi-Qian Xu Liu-Hong Huang 

机构地区：[1]Key Laboratory of Particle and Radiation Imaging, Ministry of Education, Beijing 100084, China [2]Department of Engineering Physics, Tsinghua University, Beijing 100084, China

出　　处：《Nuclear Science and Techniques》2019年第6期104-113,共10页核技术（英文）

摘　　要：The time-domain calibration coefficient of a D-Dot sensor should be identical across various transverse electromagnetic (TEM) cells to comply with the IEEE Std 1309. However, in our previous calibration experiments, poor consistency was observed. The size of D-Dot sensors relative to TEM cells is considered the main reason for this poor consistency. Therefore, this study aims at determining the calibration coefficient of a D-Dot sensor. We calculate the theoretical coefficient as a reference. Practical calibration experiments involve the processing of TEM cells with three different sizes. To observe the response more clearly, corresponding models are constructed and numerical simulations are performed. The numerical simulations and experimental calibration are in good agreement. To determine the calibration accuracy, we quantify the accuracy using the relative error of the calibration coefficient. By comparing the coefficients obtained, it can be concluded that the perturbation error is about 15% when the relative size is over 1/3. Further, the relative size should be less than 1/5 to obtain a relative error below 10%.The time-domain calibration coefficient of a D-Dot sensor should be identical across various transverse electromagnetic(TEM) cells to comply with the IEEE Std1309. However, in our previous calibration experiments,poor consistency was observed. The size of D-Dot sensors relative to TEM cells is considered the main reason for this poor consistency. Therefore, this study aims at determining the calibration coefficient of a D-Dot sensor. We calculate the theoretical coefficient as a reference. Practical calibration experiments involve the processing of TEM cells with three different sizes. To observe the response more clearly, corresponding models are constructed and numerical simulations are performed. The numerical simulations and experimental calibration are in good agreement. To determine the calibration accuracy, we quantify the accuracy using the relative error of the calibration coefficient.By comparing the coefficients obtained, it can be concluded that the perturbation error is about 15% when the relative size is over 1/3. Further, the relative size should be less than 1/5 to obtain a relative error below 10%.

关 键 词：D-DOT Electromagnetic SENSOR TIME-DOMAIN CALIBRATION ACCURACY Numerical simulation 

分 类 号：TL[核科学技术]