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王荣, 韩成栋, 张亚鹏, 赵凤仪, 李瑶, 付强, 尹俊, 倪发福, 王彦瑜, 张鹏鸣, 陈旭荣. 小型宇宙射线探测仪的模拟和测量[J]. 原子核物理评论, 2016, 33(3): 315-320. DOI: 10.11804/NuclPhysRev.33.03.315
引用本文: 王荣, 韩成栋, 张亚鹏, 赵凤仪, 李瑶, 付强, 尹俊, 倪发福, 王彦瑜, 张鹏鸣, 陈旭荣. 小型宇宙射线探测仪的模拟和测量[J]. 原子核物理评论, 2016, 33(3): 315-320. DOI: 10.11804/NuclPhysRev.33.03.315
WANG Rong, HAN Chengdong, ZHANG Yapeng, ZHAO Fengyi, LI Yao, FU Qiang, YIN Jun, NI Fafu, WANG Yanyu, ZHANG Pengming, CHEN Xurong. Simulation and Measurement of A Small Cosmic Ray Device[J]. Nuclear Physics Review, 2016, 33(3): 315-320. DOI: 10.11804/NuclPhysRev.33.03.315
Citation: WANG Rong, HAN Chengdong, ZHANG Yapeng, ZHAO Fengyi, LI Yao, FU Qiang, YIN Jun, NI Fafu, WANG Yanyu, ZHANG Pengming, CHEN Xurong. Simulation and Measurement of A Small Cosmic Ray Device[J]. Nuclear Physics Review, 2016, 33(3): 315-320. DOI: 10.11804/NuclPhysRev.33.03.315

小型宇宙射线探测仪的模拟和测量

Simulation and Measurement of A Small Cosmic Ray Device

  • 摘要: 介绍了一款小型宇宙射线探测仪。该仪器具有宇宙射线科普演示功能,主要用于实时测量μ子射线并显示计数,以及长时间尺度下(年)稳定地对不同角度的次级宇宙线通量进行监控记录。简要地展示了探测器的硬件构造和探测效率的模拟计算。探测仪单个探测器的探测效率为93.1%,两个探测器符合测量的探测效率为86.6%。根据探测器的计数率以及模拟计算的探测效率,估计了次级宇宙射线垂直地面方向的通量,为J=29±3 m-2 sr-1 s-1。另外,利用该宇宙射线探测仪,测量了兰州市区的次级宇宙射线的天顶角分布。其结果很好地满足I(θ)=IH+I0 cosα θ经验公式,其中的角度依赖参数α=2.42±0.52。

    A small cosmic ray device is introduced in this paper.It has the demonstration function for popularization of science,and can be used mainly to display the μ counts in a real-time measurement,and to monitor the secondary cosmic ray flux at different angles in a very long time scale (years).We briefly show the hardware of the device and the detecting efficiency calculation by simulation.The detecting efficiency for one detector of the device is 93.1%,and the detecting efficiency is 86.6% for the coincidence measurement of two detectors.Based on the count rate by the detector and the simulated efficiency,the secondary cosmic ray flux perpendicular to the ground surface is measured,which is J=29±3 m-2sr-1 s-1.Moreover,with an application of the device,we measured the angular distribution of the secondary cosmic ray rate in Lanzhou City.The resulting angular distribution agrees well with the empirical formula as I(θ)=IH+I0 cosα θ,in which the parameter for the angle-dependence is α=2.42±0.53.

     

    Abstract: A small cosmic ray device is introduced in this paper.It has the demonstration function for popularization of science,and can be used mainly to display the μ counts in a real-time measurement,and to monitor the secondary cosmic ray flux at different angles in a very long time scale (years).We briefly show the hardware of the device and the detecting efficiency calculation by simulation.The detecting efficiency for one detector of the device is 93.1%,and the detecting efficiency is 86.6% for the coincidence measurement of two detectors.Based on the count rate by the detector and the simulated efficiency,the secondary cosmic ray flux perpendicular to the ground surface is measured,which is J=29±3 m-2sr-1 s-1.Moreover,with an application of the device,we measured the angular distribution of the secondary cosmic ray rate in Lanzhou City.The resulting angular distribution agrees well with the empirical formula as I(θ)=IH+I0 cosα θ,in which the parameter for the angle-dependence is α=2.42±0.53.

     

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