Simulation study on cosmic ray background at large zenith angle based on GRANDProto35 coincidence array experiment
Simulation study on cosmic ray background at large zenith angle based on GRANDProto35 coincidence array experiment
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基于GRANDProto35符合阵列实验的大天顶角宇宙线背景模拟研究
DOI：
10.1007/s41365-020-00841-3
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发表时间：
2021-01
影响因子：
2.8
通讯作者：
Martineau Huynh Olivier
中科院分区：
文献类型：
--
作者：
Qian Xiang Li;Wang Xu;Sun Hui Ying;Wang Zhen;Martineau Huynh Olivier
百倍能量区的中微子探测是研究超高能宇宙射线起源的终极手段，其中大型射电探测阵列巨型中微子探测射电阵列(GRAND)项目旨在用来解密这一百年难题。GRANDProto35紧凑型阵列是用于大实验的35个无线电原型探测器的微型形式，它通过原型探测器的运行和数据分析来验证大性能的可靠性。由于射电探测器是近年来的新发展，其指标需要通过传统探测器进行验证，因此，GRANDProto35符合阵列由射电探测器和闪烁探测器组成。基于该符合阵列，模拟了宇宙线的探测效率、有效面积和事件率随天顶角的变化。研究发现，1017 eV能区对GRANDProto35探测非常敏感。当能量超过1017 eV时，阵列探测效率可达95%以上，有效面积可达~2W×106m2。对大天顶角宇宙线事件的模拟研究表明，随着天顶角的增大，该阵列探测到的宇宙线事件率显著下降，当天顶角为75°时，宇宙线事件率约为每天0.1。这为大角度宇宙线事件引起的中微子观测提供了本底污染率，为进一步的实验提供了重要参考。研究结果将在符合阵列联合运行后得到验证。
Neutrino detection in the 100 PeV energy region is the ultimate means of studying the origin of ultra-high-energy cosmic rays, in which the large radio detection array giant radio array for neutrino detection (GRAND) project aims to use to decipher this century-old problem. The GRANDProto35 compact array is a microform of 35 radio prototype detectors for the GRAND experiment, which verifies the reliability of GRAND performance through operation, and data analysis of the prototype detectors. As radio detectors are a novel development in recent years, and their indexes need to be verified by traditional detectors, the GRAND Cooperation Group designed and constructed the GRANDProto35 coincidence array composed of radio detectors and scintillation detectors. This study simulated the changes in detection efficiency, effective area, and event rate of cosmic rays with zenith angle based on this coincidence array. The study found that the 1017eV energy region is sensitive to GRANDProto35 detection. When the energy exceeded 1017eV, the array detection efficiency could reach more than 95% and the effective area was up to ~ 2 × 106m2. A simulation study on cosmic ray events with large zenith angles showed that the event rate detected by the array decreased significantly with increasing zenith angle, and the event rate of cosmic rays was approximately 0.1 per day for a zenith angle of 75°. This serves as the background pollution rate for neutrino observation caused by large-angle cosmic-ray events, providing an important reference for further experiments. The study results will be verified after the joint operation of the coincidence array.
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影响因子：
8.6
作者：
K. Greisen
通讯作者：
K. Greisen
DOI：
10.5445/ir/270043064
发表时间：
1998-02
期刊：
--
影响因子：
--
作者：
D. Heck;J. Knapp;J. Capdevielle;G. Schatz;T. Thouw
通讯作者：
D. Heck;J. Knapp;J. Capdevielle;G. Schatz;T. Thouw
DOI：
10.1007/s11433-018-9385-7
发表时间：
2018-10
期刊：
Science China Physics, Mechanics & Astronomy
影响因子：
--
作者：
J. Alvarez-Muñiz;R. A. Batista;R. A. Batista;V. A. Balagopal;J. Bolmont;M. Bustamante;M. Bustamante-M.-Bu
通讯作者：
J. Alvarez-Muñiz;R. A. Batista;R. A. Batista;V. A. Balagopal;J. Bolmont;M. Bustamante;M. Bustamante-M.-Bu
用于西藏 AS 伽马实验的新型闪烁体探测器
影响因子：
1.3
作者：
Y. Zhang;Q.-B. Gou;H. Cai;T.-L. Chen;Danzengluobu;C.-F. Feng;Y.-L. Feng;Z.-Y. Feng;Q. Gao;X.-J. Gao;Y.-Q. Guo;Y.-Y. Guo;Y.-Y. Hou;H.-B. Hu;C. Jin;H.-J. Li;C. Liu;M.-Y. Liu;X.-L. Qian;Z. Tian;Z. Wang;L. Xue;X.-Y. Zhang;Xi-Ying Zhang
通讯作者：
Xi-Ying Zhang
使用 21 厘米阵列观测到的 NCP 地区的无线电源
影响因子：
4.9
作者：
Zheng Qian;Wu Xiang-Ping;Johnston-Hollitt Melanie;Gu Jun-hua;Xu Haiguang
通讯作者：
Xu Haiguang