Bibcode
Abdellaoui, G.; Abe, S.; Acheli, A.; Adams, J. H.; Ahmad, S.; Ahriche, A.; Albert, J.-N.; Allard, D.; Alonso, G.; Anchordoqui, L.; Andreev, V.; Anzalone, A.; Aouimeur, W.; Arai, Y.; Arsene, N.; Asano, K.; Attallah, R.; Attoui, H.; Ave Pernas, M.; Bacholle, S.; Bakiri, M.; Baragatti, P.; Barrillon, P.; Bartocci, S.; Batsch, T.; Bayer, J.; Bechini, R.; Belenguer, T.; Bellotti, R.; Belov, A.; Belov, K.; Benadda, B.; Benmessai, K.; Berlind, A. A.; Bertaina, M.; Biermann, P. L.; Biktemerova, S.; Bisconti, F.; Blanc, N.; Błȩcki, J.; Blin-Bondil, S.; Bobik, P.; Bogomilov, M.; Bonamente, M.; Boudaoud, R.; Bozzo, E.; Briggs, M. S.; Bruno, A.; Caballero, K. S.; Cafagna, F.; Campana, D.; Capdevielle, J.-N.; Capel, F.; Caramete, A.; Caramete, L.; Carlson, P.; Caruso, R.; Casolino, M.; Cassardo, C.; Castellina, A.; Castellini, G.; Catalano, C.; Catalano, O.; Cellino, A.; Chikawa, M.; Chiritoi, G.; Christl, M. J.; Connaughton, V.; Conti, L.; Contino, G.; Cordero, G.; Cotto, G.; Crawford, H. J.; Cremonini, R.; Csorna, S.; Dagoret-Campagne, S.; De Donato, C.; de la Taille, C.; De Santis, C.; del Peral, L.; Di Martino, M.; Djemil, T.; Djenas, S. A.; Dulucq, F.; Dupieux, M.; Dutan, I.; Ebersoldt, A.; Ebisuzaki, T.; Engel, R.; Eser, J.; Fang, K.; Fenu, F.; Fernández-González, S.; Fernández-Soriano, J.; Ferrarese, S.; Finco, D.; Flamini, M.; Fornaro, C.; Forza, R.; Fouka, M. et al.
Referencia bibliográfica
Nuclear Inst. and Methods in Physics Research, A, Volume 866, p. 150-163.
Fecha de publicación:
9
2017
Número de citas
17
Número de citas referidas
12
Descripción
JEM-EUSO is a space mission designed to investigate Ultra-High Energy
Cosmic Rays and Neutrinos (E > 5 ṡ 1019 eV) from the
International Space Station (ISS). Looking down from above its wide
angle telescope is able to observe their air showers and collect such
data from a very wide area. Highly specific trigger algorithms are
needed to drastically reduce the data load in the presence of both
atmospheric and human activity related background light, yet retain the
rare cosmic ray events recorded in the telescope. We report the
performance in offline testing of the first level trigger algorithm on
data from JEM-EUSO prototypes and laboratory measurements observing
different light sources: data taken during a high altitude balloon
flight over Canada, laser pulses observed from the ground traversing the
real atmosphere, and model landscapes reproducing realistic aspect
ratios and light conditions as would be seen from the ISS itself. The
first level trigger logic successfully kept the trigger rate within the
permissible bounds when challenged with artificially produced as well as
naturally encountered night sky background fluctuations and while
retaining events with general air-shower characteristics.