光电倍增管的性能研究

The Performance Exploration of Photomultipler Tube

随着科学家们对宇宙线研究的深入,用于探测宇宙线的各种实验仪器的性能研究与优化也成为一个重要的方面。电磁粒子探测器(ED)作为一种高精度实验器材,主要是用于探测空气簇射前锋面上的次级电磁粒子,并记录粒子密度和到达时间等信息。单元ED主要是由光电倍增管(PMT)、塑料闪烁体、波长位移光纤等组成,而光电倍增管作为其中精密敏感,结构复杂的部件,因此其是单元ED中性能优化最重要的部件之一。本文运用实验器材对CR284型光电倍增管的绝对增益、高压响应曲线、暗噪声计数率以及线性度进行了测试和分析。

With the deepening of scientists for cosmic ray research, the performance research and optimization of the detection of cosmic rays of various kinds of experimental apparatus has become an important aspect. As a high-precision test equipment, the electromagnetic particle detector (ED) is mainly used for secondary electromagnetic particle detection on the surface of the front air shower, and record information such as particle density and arrival time. The ED unit is mainly composed of photomultiplier tube (PMT), plastic scintillator, wavelength shifting fiber etc., because of the precision sensitive parts with complex structure, the photomultiplier tube is one of the most important parts of the performance optimization of ED unit. This article ran a test and analyzed the absolute gain, high voltage response curve, the dark noise counting rate and degree of linearity of the type CR284 photomultiplier tube with experimental equipment.