Study of the phoswich type scintillation fiber detector

我们研制了一种用于重离子治癌辐射质量测量的小型phoswich型探测器。该探测器的探测部分由空心型CaF_2晶体和液态有机闪烁体组成。我们用光纤引出闪烁。利用加速器的实验结果表明，这种探测器有可能识别带电粒子和次级γ射线。结果表明，要精确测量辐射质量，对探测器的能量分辨率提出了更高的要求。

We developed the small phoswich type detector for the measurements of the radiation quality in the heavy ion radiothrapy. The detection part of this detecor consists of the hollow type CaF2 crystal and liquid organic scintillator. And we lead out the scintillation using the optical fiber. This study has shown that this type detector is possible to identify charged particles and secondary gamma rays by the result of the experiment using accelerator. And it has shown that higher energy resolution of this detector is required for the measurement of the precise radiation quality.