High time resolution RPCs with different readout geometries
High time resolution RPCs with different readout geometries
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DOI：
10.1088/1748-0221/7/12/p12005
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发表时间：
2012-12
影响因子：
1.3
通讯作者：
N. Tomida;C. Hsieh;M. Niiyama;H. Ohnishi;W. Chang;T. Hashimoto;H. Hamano;K. Mizutani
中科院分区：
文献类型：
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作者：
N. Tomida;C. Hsieh;M. Niiyama;H. Ohnishi;W. Chang;T. Hashimoto;H. Hamano;K. Mizutani
我们已经为日本第8春的LEPS2实验研制了阻性板室(RPC)原型。在LEPS2，RPC将用作飞行时间探测器。目标是在读出单元尽可能大的情况下实现50ps的时间分辨率。我们制作了几种类型的RPC，并研究了时间分辨率与读出单元的大小和形状的依赖关系。我们发现，时间分辨率和效率在很大程度上取决于读出单元的形状和被激发的位置。我们证实了两端条形读出单元比单端读出单元的性能更好，在2.5 cm(宽)×108 cm(长)的读出单元下获得了60ps的有希望的时间分辨率。
We have developed prototype resistive plate chambers (RPCs) for the LEPS2 experiment at SPring-8 in Japan. At LEPS2, RPCs will be used as time-of-flight detectors. The goal is to achieve a time resolution of 50 ps with a readout cell as large as possible. We made several types of RPCs and examined the dependence of time resolution with the size and the shape of the readout cell. We found that the time resolution and the efficiency largely depend on the shape of the readout cell and the position where it is excited. We confirmed that two-ends strip-shaped readout cells performed better than one-end readout cells, and a promising time resolution of 60 ps was obtained with a 2.5 cm (wide) × 108 cm (long) readout.