The TUS observatory was the first orbital detector aimed at the detection of ultra-high energy cosmic rays (UHECRs). It was launched on April 28, 2016, from the Vostochny cosmodrome in Russia and operated until December 2017. It collected ∼ 80, 000 events with a time resolution of 0.8 μs. A fundamental parameter to be determined for cosmic ray studies is the exposure of an experiment. This parameter is important to estimate the average expected event rate as a function of energy and to calculate the absolute flux in case of event detection. Here we present results of a study aimed to calculate the exposure that TUS accumulated during its mission. The role of clouds, detector dead time, artificial sources, storms, lightning discharges, airglow and moon phases is studied in detail. An exposure estimate with its geographical distribution is presented. We report on the applied technique and on the perspectives of this study in view of the future missions of the JEM-EUSO program. © Copyright owned by the author(s).

Estimation of the exposure of the TUS space-based cosmic ray observatory

Fenu Francesco;Shinozaki Kenji;Bertaina Mario;Cellino Alberto;Anzalone A.;Arnone E.;Bagheri M.;Barghini D.;Bartocci S.;Bisconti F.;Blanc N.;Bozzo E.;Casolino M.;Cassardo C.;Cotto G.;Cremonini R.;Ferrarese S.;Franchini S.;Galeotti P.;Gardiol D.;Golzio A.;Kajino F.;Manfrin M.;Miyamoto H.;Neronov A.;Pagliaro A.;Perfetto F.;Piraino S.;Plebaniak Z.;Pollini A.;Scagliola A.;Shinozaki K.;Suzuki M.;Vigorito C.;
2022-01-01

Abstract

The TUS observatory was the first orbital detector aimed at the detection of ultra-high energy cosmic rays (UHECRs). It was launched on April 28, 2016, from the Vostochny cosmodrome in Russia and operated until December 2017. It collected ∼ 80, 000 events with a time resolution of 0.8 μs. A fundamental parameter to be determined for cosmic ray studies is the exposure of an experiment. This parameter is important to estimate the average expected event rate as a function of energy and to calculate the absolute flux in case of event detection. Here we present results of a study aimed to calculate the exposure that TUS accumulated during its mission. The role of clouds, detector dead time, artificial sources, storms, lightning discharges, airglow and moon phases is studied in detail. An exposure estimate with its geographical distribution is presented. We report on the applied technique and on the perspectives of this study in view of the future missions of the JEM-EUSO program. © Copyright owned by the author(s).
2022
37 th International Cosmic Ray Conference (ICRC 2021)
Berlin
July 12th – 23rd, 2021
395
1
12
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85145255795&partnerID=40&md5=b2cf18a61b770a1d1f407db33a114fde
Cosmic ray detectors; Cosmology; Geographical distribution; Observatories; Artificial sources; Cosmodrome; Dead time; Energy; Events detection; Lightning discharge; Orbital detectors; Space-based; Time-resolution; Ultra high-energy cosmic rays; Cosmic rays
Fenu Francesco; Shinozaki Kenji; Zotov Mikhail; Bertaina Mario; Castellina Antonella; Cellino Alberto; Klimov Pavel; Abdellaoui G.; Abe S.; Adams J.H.; Allard D.; Alonso G.; Anchordoqui L.; Anzalone A.; Arnone E.; Asano K.; Attallah R.; Attoui H.; Ave Pernas M.; Bagheri M.; Baláz J.; Bakiri M.; Barghini D.; Bartocci S.; Battisti M.; Bayer J.; Beldjilali B.; Belenguer T.; Belkhalfa N.; Bellotti R.; Belov A.A.; Benmessai K.; Bertone P.F.; Biermann P.L.; Bisconti F.; Blaksley C.; Blanc N.; Blin-Bondil S.; Bobik P.; Bogomilov M.; Bolmgren K.; Bozzo E.; Briz S.; Bruno A.; Caballero K.S.; Cafagna F.; Cambié G.; Campana D.; Capdevielle J.-N.; Capel F.; Caramete A.; Caramete L.; Carlson P.; Caruso R.; Casolino M.; Cassardo C.; Catalano O.; Černý K.; Chikawa M.; Chiritoi G.; Christl M.J.; Colalillo R.; Conti L.; Cotto G.; Crawford H.J.; Cremonini R.; Creusot A.; de Castro Gónzalez A.; de la Taille C.; del Peral L.; Diaz Damian A.; Diesing R.; Dinaucourt P.; Djakonow A.; Djemil T.; Ebersoldt A.; Ebisuzaki T.; Eser J.; Fernández-González S.; Ferrarese S.; Filippatos G.; Finch W.I.; Fornaro C.; Fouka M.; Franceschi A.; Franchini S.; Fuglesang C.; Fujii T.; Fukushima M.; Galeotti P.; García-Ortega E.; Gardiol D.; Garipov G.K.; Gascón E.; Gazda E.; Genci J.; Golzio A.; González Alvarado C.; Gorodetzky P.; Green A.; Guarino F.; Guépin C.; Guzmán A.; Hachisu Y.; Haungs A.; Hernández Carretero J.; Hulett L.; Ikeda D.; Inoue N.; Inoue S.; Isgrò F.; Itow Y.; Jammer T.; Jeong S.; Joven E.; Judd E.G.; Jochum J.; Kajino F.; Kajino T.; Kalli S.; Kaneko I.; Karadzhov Y.; Kasztelan M.; Katahira K.; Kawai K.; Kawasaki Y.; Kedadra A.; Khales H.; Khrenov B.A.; Kim Jeong-Sook; Kim Soon-Wook; Kleifges M.; Kolev D.; Kreykenbohm I.; Krizmanic J.F.; Królik K.; Kungel V.; Kurihara Y.; Kusenko A.; Kuznetsov E.; Lahmar H.; Lakhdari F.; Licandro J.; López Campano L.; López Martínez F.; Mackovjak S.; Mahdi M.; Mandát D.; Manfrin M.; Marcelli L.; Marcos J.L.; Marszał W.; Martín Y.; Martinez O.; Mase K.; Matev R.; Matthews J.N.; Mebarki N.; Medina-Tanco G.; Menshikov A.; Merino A.; Mese M.; Meseguer J.; Meyer S.S.; Mimouni J.; Miyamoto H.; Mizumoto Y.; Monaco A.; Morales de los Ríos J.A.; Mastafa M.; Nagataki S.; Naitamor S.; Napolitano T.; Nachtman J.M.; Neronov A.; Nomoto K.; Nonaka T.; Ogawa T.; Ogio S.; Ohmori H.; Olinto A.V.; Onel Y.; Osteria G.; Otte A.N.; Pagliaro A.; Painter W.; Panasyuk M.I.; Panico B.; Parizot E.; Park I.H.; Pastircak B.; Paul T.; Pech M.; Pérez-Grande I.; Perfetto F.; Peter T.; Picozza P.; Pindado S.; Piotrowski L.W.; Piraino S.; Plebaniak Z.; Pollini A.; Popescu E.M.; Prevete R.; Prévôt G.; Prieto H.; Przybylak M.; Puehlhofer G.; Putis M.; Reardon P.; Reno M.H.; Reyes M.; Ricci M.; Rodríguez Frías M.D.; Romero Matamala O.F.; Ronga F.; Sabau M.D.; Saccá G.; Sáez Cano G.; Sagawa H.; Sahnoune Z.; Saito A.; Sakaki N.; Salazar H.; Sanchez Balanzar J.C.; Sánchez J.L.; Santangelo A.; Sanz-Andrés A.; Sanz Palomino M.; Saprykin O.A.; Sarazin F.; Sato M.; Scagliola A.; Schanz T.; Schieler H.; Schovánek P.; Scotti V.; Serra M.; Sharakin S.A.; Shimizu H.M.; Shinozaki K.; Soriano J.F.; Sotgiu A.; Stan I.; Strharský I.; Sugiyama N.; Supanitsky D.; Suzuki M.; Szabelski J.; Tajima N.; Tajima T.; Takahashi Y.; Takeda M.; Takizawa Y.; Talai M.C.; Tameda Y.; Tenzer C.; Thomas S.B.; Tibolla O.; Tkachev L.G.; Tomida T.; Tone N.; Toscano S.; Traïche M.; Tsunesada Y.; Tsuno K.; Turriziani S.; Uchihori Y.; Vaduvescu O.; Valdés-Galicia J.F.; Vallania P.; Valore L.; Vankova-Kirilova G.; Venters T.M.; Vigorito C.; Villaseñor L.; Vlcek B.; von Ballmoos P.; Vrabel M.; Wada S.; Watanabe J.; Watts J.; Weigand Muñoz R.; Weindl A.; Wiencke L.; Wille M.; Wilms J.; Winn D.; Yamamoto T.; Yang J.; Yano H.; Yashin I.V.; Yonetoku D.; Yoshida S.; Young R.; Zgura I.S.; Zotov M.Yu.; Zuccaro Marchi A.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1929555
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