The Giant Radio Array for Neutrino Detection (GRAND): Science and design

Jaime Álvarez-Muñiz Rafael Alves Batista Aswathi Balagopal V. Julien Bolmont 1 Mauricio Bustamante Washington Carvalho Didier Charrier 2 Ismaël Cognard 3, 4 Valentin Decoene 5 Peter Denton Sijbrand de Jong Krijn de Vries Ralph Engel Ke Fang Chad Finley Stefano Gabici 6 Quanbu Gou Junhua Gu Claire Guepin 5 Hongbo Hu Yan Huang Kumiko Kotera 5 Sandra Le Coz Jean-Philippe Lenain 1 Guoliang Lü Olivier Martineau-Huynh 1 Miguel Mostafá Fabrice Mottez 7 Kohta Murase Valentin Niess 8 Foteini Oikonomou Tanguy Pierog 2 Xiangli Qian Bo Qin Duan Ran Nicolas Renault-Tinacci 5 Markus Roth Frank Schröder Fabian Schüssler 9 Cyril Tasse 10 Charles Timmermans Matías Tueros Xiangping Wu Philippe Zarka 11 Andreas Zech 7 B. Theodore Zhang Jianli Zhang Yi Zhang 12 Qian Zheng Anne Zilles 5
Abstract : The Giant Radio Array for Neutrino Detection (GRAND) is a planned large-scale observatory of ultra-high-energy (UHE) cosmic particles, with energies exceeding 108 GeV. Its goal is to solve the long-standing mystery of the origin of UHE cosmic rays. To do this, GRAND will detect an unprecedented number of UHE cosmic rays and search for the undiscovered UHE neutrinos and gamma rays associated to them with unmatched sensitivity. GRAND will use large arrays of antennas to detect the radio emission coming from extensive air showers initiated by UHE particles in the atmosphere. Its design is modular: 20 separate, independent sub-arrays, each of 10000 radio antennas deployed over 10000 km2. A staged construction plan will validate key detection techniques while achieving important science goals early. Here we present the science goals, detection strategy, preliminary design, performance goals, and construction plans for GRAND.
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Jaime Álvarez-Muñiz, Rafael Alves Batista, Aswathi Balagopal V., Julien Bolmont, Mauricio Bustamante, et al.. The Giant Radio Array for Neutrino Detection (GRAND): Science and design. Science China Physics, Mechanics & Astronomy, Springer, 2020, 63 (1), pp.219501. ⟨10.1007/s11433-018-9385-7⟩. ⟨hal-02392018⟩

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