Simulation study on cosmic ray background at large zenith angle based on GRANDProto35 coincidence array experiment
| Autor: | Xu Wang, Sun Huiying, Xiang-Li Qian, Zhen Wang, Olivier Martineau-Huynh |
|---|---|
| Přispěvatelé: | Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Nuclear and High Energy Physics
Astrophysics::High Energy Astrophysical Phenomena Cosmic ray 01 natural sciences 7. Clean energy Coincidence Optics 0103 physical sciences cosmic radiation: UHE 010306 general physics Zenith scintillation counter GEANT4 Physics Scintillation 010308 nuclear & particles physics business.industry background Detector Antenna aperture radio wave: detector wide-angle Scintillation detector GRANDProto35 Nuclear Energy and Engineering Neutrino detector efficiency GEANT High Energy Physics::Experiment Neutrino business [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] performance |
| Zdroj: | Nucl.Sci.Tech. Nucl.Sci.Tech., 2021, 32 (1), pp.5. ⟨10.1007/s41365-020-00841-3⟩ |
| Popis: | International audience; 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 10$^{17}$ eV energy region is sensitive to GRANDProto35 detection. When the energy exceeded 10$^{17}$ eV, the array detection efficiency could reach more than 95% and the effective area was up to ~ 2 × 10$^{6}$ m$^{2}$. 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. |
| Databáze: | OpenAIRE |
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