Scintillating microfibers as a high-resolution tracking detector for hybrid-emulsion experiment
Scintillating microfibers as a high-resolution tracking detector for hybrid-emulsion experiment
复制标题
闪烁微纤维作为混合乳液实验的高分辨率跟踪探测器
DOI：
10.1016/s0168-9002(98)00779-7
复制
发表时间：
1998
影响因子：
1.4
通讯作者：
T. Yoshida
中科院分区：
文献类型：
--
作者：
A. Ichikawa;S. Aoki;K. Imai;M. Kaneko;Y. Kondo;K. Nakazawa;H. Tanaka;K. Yamamoto;T. Yoshida
我们研制了一种非常薄且高精度的跟踪探测器，它使用了一束塑料闪烁微纤维，用于乳胶-计数器混合实验，以寻找双奇异核。该探测器的目的是测量短寿命粒子的位置和角度，如(KΞ−，K+)反应中产生的低动量−粒子。研究了光纤的光产额和衰减长度与波长移位器的密度和光纤直径的关系。用0.5GeV/c质子在光纤探测器样机和乳剂上进行了实验研究。由光纤检测器标记的轨迹在乳剂中被识别。通过将探测器预测的轨道的位置和角度与乳剂中标记的轨道的测量结果进行比较，以113μm的R.M.S精度确定位置，以约4 mm厚度的非常薄的探测器以25mrad的R.M.S精度确定角度。
We have developed a very thin and high precision tracking detector using a coherent bundle of plastic scintillating microfibers for an emulsion-counter hybrid experiment to search for double-strangeness nuclei. The purpose of this detector is to measure the position and angle of short-lived particles, such as low-momentum Ξ−particles produced in ( K−, K+) reactions. The dependence of the light yield and attenuation length of fibers on the density of the wavelength shifter and the fiber diameter have been studied. A test experiment with a prototype fiber detector and emulsion has been carried out using 0.5GeV/c protons. The tracks tagged by the fiber detector were identified in the emulsion. By comparing the position and the angle of tracks predicted by the detector with the measurements of the tagged tracks in the emulsion, positions were determined with an r.m.s precision of 113 μm and angles were determined with an r.m.s precision of 25mrad with a very thin detector of about 4mm thickness.