Y. Aita et. al., ICRC2013

33RD INTERNATIONAL COSMIC RAY CONFERENCE, RIO DE JANEIRO 2013 THE ASTROPARTICLE PHYSICS CONFERENCE

Ashra NTA: Towards Survey of Astronomical Tau Neutrino Sources

Y. AITA1 , T. AOKI1 , Y. ASAOKA1 , H.M MOTZ1 , M. SASAKI1 , C. ABIKO2 , C. KANOKOHATA2 , S. OGAWA2 , H. SHIBUYA2 , T. TAKADA2 , T. KIMURA3 , J. G. LEARNED4 , S. MATSUNO4 , S. KUZE5 , P. CHANG6 , G.W-S. HOU∗6 , Y.B. HSIUNG6 , J-G. SHU6 , K. UENO6 , M. WANG6 , P. M. BINDER7 , J. GOLDMAN7 , N. SUGIYAMA8 , Y. WATANABE9 , C-C. HSU10 (ASHRA NTA COLLABORATION).

1 Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japanr 2 Department of Physics, Toho University, Funabashi, Chiba 274-8510, Japan 3 College of Engineering, Ibaraki University, Hitachi, Ibaraki 316-8511, Japan 4 Department of Physics and Astronomy, University of Hawaii at Manoa, Honolulu, HI 96822, USA 5 Center for Environmental Remote Sensing, Chiba University, Chiba 263-0022, Japan 6 Department of Physics, National Taiwan University, Taipei, Taiwan 10617 7 Department of Physics and Astronomy, University of Hawaii at Hilo, Hilo, HI 96720-4091, USA 8 Department of Physics and Astrophysics, Nagoya University, Nagoya, Aichi 464-8601, Japan 9 Department of Engineering, Kanagawa University, Yokohama, Kanagawa 221-8686, Japan 10 Department of Physics, Louisiana State University, Baton Rouge, LA 70803-4001, USA

* presenter, wshou@phys.ntu.edu.tw

Abstract:  The conceptual layout for Ashra Neutrino Telescope Array (Ashra NTA) has three site stations forming a 25 km triangle watching the total air mass surrounded by Mauna Loa, Mauna Kea, and Hualalai, and a single site station at the center with full-sky coverage. Tremendous sensitivity (equivalent to > 100 km3 water) can be achieved with Cherenkov-fluorescence stereoscopic observation for PeV-EeV neutrinos in largely background-free conditions. With demonstrated fine imaging by Ashra-1 of Earth-skimming tau showers, a new collaboration, aimed at clear discovery and identification of astronomical tau neutrino sources, is forming.

Keywords: Ashra NTA, PeV-EeV neutrinos, Earth-skimming, Cherenkov-fluorescence

http://www.cbpf.br/~icrc2013/papers/icrc2013-1030.pdf