半导体光电探测器近年发展非常迅速，某些方面已经具有超越传统光电倍增管的优势。多像素光子计数器（Muilti-pixel Photon Counter，MPPC）自2007年推出后，便受到广泛关注。本项目拟采用塑料闪烁光纤作为探测材料，MPPC作为光电转换单元，构建两个3mm*12mm*200mm位置分辨好于0.3mm的径迹探测器。通过实验和模拟相结合的方法，优化结构设计，提高探测器性能。通过对光纤定位工艺、光纤和MPPC性能测试等内容进行研究，为光纤探测器建造及MPPC应用的研究打下基础。

Silicon photomultipliers have been developed rapidly in recent years, the advantages of silicon photomultipliers has exceed that of traditional PMTs in some aspects. Since the advent of Muilti-pixel Photon Counter (MPPC) in 2007, the research has been reported widely. This work develops two 3mm*12mm*200mm scintillation fiber tracker modules with MPPC readout . The position resolution is expected to be better than 0.3mm. By combining the experiment and simulation results, optimize the layout of detectors and improve its performance. The positioning process of fiber, the characteristics of fiber and MPPC will be studied. This work can provide the bases for construction of fiber trackers and application of MPPC.