Large-area scintillator hodoscope with 50 ps timing resolution onboard BESS
Large-area scintillator hodoscope with 50 ps timing resolution onboard BESS
复制标题
BESS 上具有 50 ps 定时分辨率的大面积闪烁体测速仪
DOI：
10.1016/s0168-9002(00)00571-4
复制
发表时间：
2000
影响因子：
1.4
通讯作者：
T. Yoshida
中科院分区：
文献类型：
--
作者：
Y. Shikaze;S. Orito;T. Mitsui;K. Yoshimura;H. Matsumoto;H. Matsunaga;M. Nozaki;T. Sonoda;I. Ueda;T. Yoshida
介绍了BESS刚性谱仪上大面积闪烁式反射镜的设计与性能；一种接受度为0.3 m2sr的仪器。所述反射镜的配置使得分别位于上层和下层的计数器为10个和12个。每个计数器从两端看2.5英寸。将细孔光电倍增管置于0.2 t的杂散磁场中，给出了各种光束测试数据。在地面使用宇宙射线μ介子确认了每层50 ps的定时分辨率，使用纯高斯分辨率函数给出了70 ps rms的总飞行时间分辨率。与以往在类似的闪烁式反射镜上的测量结果比较表明，计时分辨率与1/ Npe成正比，其中npe1为有效光电子数。
We describe the design and performance of a large-area scintillator hodoscope onboard the BESS rigidity spectrometer; an instrument with an acceptance of 0.3 m2sr . The hodoscope is configured such that 10 and 12 counters are, respectively, situated in upper and lower layers. Each counter is viewed from its ends by 2.5 in. fine-mesh photomultiplier tubes placed in a stray magnetic field of 0.2 T. Various beam-test data are presented. Use of cosmic-ray muons at ground-level confirmed 50 ps timing resolution for each layer, giving an overall time-of-flight resolution of 70 ps rms using a pure Gaussian-resolution function. Comparison with previous measurements on a similar scintillator hodoscope indicates good agreement with the scaling law that timing resolution is proportional to 1/ Npe, where Npeis the effective number of photoelectrons.
影响因子：
8.6
作者：
Orito, S;Maeno, T;Yoshimura, K
通讯作者：
Yoshimura, K