Preliminary analysis of EUSO—TA data

作     者：F Fenu L W Piotrowski H Shin A Jung S Bacholle F Bisconti F Capel J Eser Y Kawasaki E Kuznetsov O Larsson S Mackovjak H Miyamoto Z Plebaniak G Prevot M Putis K Shinozaki J Adams M Bertaina P Bobik M Casolino J N Matthews M Ricci L Wiencke for theEUSO-TA Collaboration 

作者机构：Universitá degli studi di Torino INFN Torino Via Pietro Giuria 1 Torino Italy Computational Astrophysics Laboratory RIKEN 2-1 Hirosawa Wako-shi Japan Institute for Cosmic Ray Research University of Tokyo Kashiwa Chiba 277-8582 Japan Université Paris Diderot 10 Rue Alice Domon et Léonie Duquet Paris France Karlsruher Institut für Technologie Eggenstein-Leopoldshafen Germany KTH Royal Institute of Technology SE-100 44 Stockholm Sweden Colorado School of Mines 1523 Illinois St. Golden Colorado USA University of Alabama in Huntsville Huntsville USA ISDC Data Center for Astrophysics Chemin d'Ecogia 16 Versoix Switzerland National Centre for Nuclear Research 90950 Lodz Poland Institute of Experimental Physics Watsonova 47 040 01 Kosice Slovak Republic Eberhard Karls Universität Tübingen Sand 1 Tübingen Germany INFN Roma Tor Vergata Via della Ricerca scientifica 1 Roma Italy Inst. for High Energy Astrophysics University of Utah Salt Lake City USA INFN Laboratori Nazionali di Frascati Via E. Fermi 40 Frascati Italy 

出 版 物：《Journal of Physics: Conference Series》 

年 卷 期：2016年第718卷第5期

学科分类：07[理学] 0702[理学-物理学] 

摘      要：The EUSO-TA detector is a pathfinder for the JEM-EUSO project and is currently installed in Black Rock Mesa (Utah) on the site of the Telescope Array fluorescence detectors. Aim of this experiment is to validate the observation principle of JEM-EUSO on air showers measured from ground. The experiment gets data in coincidence with the TA triggers to increase the likelihood of cosmic ray detection. In this framework the collaboration is also testing the detector response with respect to several test events from lasers and LED flashers. Moreover, another aim of the project is the validation of the stability of the data acquisition chain in real sky condition and the optimization of the trigger scheme for the rejection of background. Data analysis is ongoing to identify cosmic ray events in coincidence with the TA detector. In this contribution we will show the response of the EUSO-TA detector to all the different typologies of events and we will show some preliminary results on the trigger optimization performed on such data.