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首页> 外文期刊>Nuclear Instruments & Methods in Physics Research >The development of a high-resolution scintillating fiber tracker with silicon photomultiplier readout
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The development of a high-resolution scintillating fiber tracker with silicon photomultiplier readout

机译:具有硅光电倍增管读数的高分辨率闪烁光纤跟踪器的开发

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摘要

We present test results from a novel modular scintillating fiber tracker using silicon photomultiplier (SiPM) arrays for readout. The tracker modules are made up from 250 μm thin scintillating fibers that are arranged in five tightly packed layers on top and on bottom of a light carbon fiber/Rohacell foam support structure. Novel, custom made SiPM arrays from Hamamatsu with a channel pitch of 250 μm and a photon detection efficiency of approximately 50% are used for readout. From a full GEANT4 simulation the expected position resolution is 0.05 mm at a tracking efficiency of 99%. Several 860 mm long and 32-64 mm wide tracker modules were tested at the PS facilities at CERN in summer 2008 and autumn 2009 achieving high light yields of about 20 photons for a minimal ionizing particle. We will show details on the characterization of the SiPM arrays and the quality control of scintillating fibers, the construction of the fiber modules and the results in terms of tracking efficiency, noise and position resolution.
机译:我们介绍了使用硅光电倍增管(SiPM)阵列进行读取的新型模块化闪烁光纤跟踪器的测试结果。跟踪器模块由250μm细小的闪烁纤维组成,这些纤维以五个紧密堆积的层的形式排列在轻碳纤维/ Rohacell泡沫支撑结构的顶部和底部。读取来自Hamamatsu的新型定制SiPM阵列,其通道间距为250μm,光子检测效率约为50%。通过完整的GEANT4仿真,预期的位置分辨率为0.05 mm,跟踪效率为99%。在2008年夏季和2009年秋季,在欧洲核子研究组织的PS装置上测试了几个860 mm长和32-64 mm宽的跟踪器模块,实现了约20个光子的高光输出,以最小化电离粒子。我们将详细介绍SiPM阵列的特性和闪烁光纤的质量控制,光纤模块的结构以及跟踪效率,噪声和位置分辨率方面的结果。

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