Performance of the Medipix and Timepix devices for the recognition of electron-gamma radiation fields
Performance of the Medipix and Timepix devices for the recognition of electron-gamma radiation fields
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Medipix 和 Timepix 设备识别电子伽马辐射场的性能
DOI：
10.1016/j.nima.2010.12.114
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发表时间：
2011
影响因子：
1.4
通讯作者：
Z. Vykydal
中科院分区：
文献类型：
--
作者：
C. Teyssier;J. Bouchami;F. Dallaire;J. Idarraga;C. Leroy;S. Pospíšil;J. Šolc;O. Scallon;Z. Vykydal
Medipix设备是由CERN设计的硅像素化探测器，用于探测不同类型的辐射。探测器的响应特征可以用来识别不同类型的粒子：重带电粒子、mips、电子或光子。然而，虽然高度电离的带电粒子可以清楚地识别，但电子和光子几乎无法相互区分，因此必须考虑辐射量子的错置。通过实验量化了不同实验情况下的错误率。使用GEANT4模拟探测器和实验装置来进一步理解结果。研究了光子的检测效率，并强调了使用Timepix设备的优点。
The Medipix device is a silicon pixelated detector designed by CERN for the detection of different types of radiation. The detector response features can be exploited to identify different types of particles: heavy charged particles, mips, electrons or photons. However, while heavily ionizing charged particles are clearly recognizable, electrons and photons can hardly be distinguished from each other and thus, mistagging of radiation quanta has to be considered. Experiments were performed to quantify the mistag rate in different experimental situations. A GEANT4 simulation of the detector and the experimental setup was used to further understand the results. The detection efficiency for photons was studied and the advantages of using a Timepix device highlighted.