Calibration aspects of the JEM-EUSO mission

• Autores: Adams, J. H.; Ahmad, S.; Albert, J. N.; Allard, D.; Anchordoqui, L.; Andreev, V.; Anzalone, A.; Arai, Y.; Asano, K.; Ave Pernas, M.; Barrillon, P.; Batsch, T.; Bayer, J.; Bechini, R.; Belenguer, T.; Bellotti, R.; Belov, K.; Berlind, A. A.; Bertaina, M.; Biermann, P. L.; Biktemerova, S.; Blaksley, C.; Blanc. N.; Blecki, J.; Blin-Bondil, S.; Blumer, J.; Bobik, P.; Bogomilov, M.; Bonamente, M.; Supanitsky, Alberto Daniel; The JEM-EUSO Collaboration
• Año de publicación: 2015
• Idioma: inglés
• Tipo de recurso: artículo
• Materia: Air-Shower Fluorescence Telescope; Jem-Euso; Calibration; Space-Based Experiment
• Institución: Consejo Nacional de Investigaciones Científicas y Técnicas

he JEM-EUSO telescope will be, after calibration, a very accurate instrument which yields the number of received photons from the number of measured photo-electrons. The project is in phase A (demonstration of the concept) including already operating prototype instruments, i.e. many parts of the instrument have been constructed and tested. Calibration is a crucial part of the instrument and its use. The focal surface (FS) of the JEM-EUSO telescope will consist of about 5000 photo-multiplier tubes (PMTs), which have to be well calibrated to reach the required accuracy in reconstructing the air-shower parameters. The optics system consists of 3 plastic Fresnel (double-sided) lenses of 2.5 m diameter. Theaim of the calibration system is to measure the efficiencies (transmittances) of the optics and absolute efficiencies of the entire focal surface detector. The system consists of 3 main components: (i) Pre-flight calibration devices on ground, where the efficiency and gain of the PMTs will be measured absolutely and also the transmittance of the optics will be. (ii) On-board relative calibration system applying twomethods: a) operating during the day when the JEM-EUSO lid will be closed with small light sources on board. b) operating during the night, together with data taking: the monitoring of the background rate over identical sites. (iii) Absolute in-flight calibration, again, applying two methods: a) measurement of the moon light, reflected on high altitude, high albedo clouds. b) measurements of calibrated flashes and tracks produced by the Global Light System (GLS). Some details of each calibration method will be described in this paper.
Fil: Adams, J. H.. University of Alabama in Huntsville; Estados Unidos
Fil: Ahmad, S.. Ecole Polytechnique; Francia
Fil: Albert, J. N.. Univ Paris-Sud; Francia
Fil: Allard, D.. Univ Paris Diderot; Francia
Fil: Anchordoqui, L.. University of Wisconsin-Milwaukee; Estados Unidos
Fil: Andreev, V.. University of California; Estados Unidos
Fil: Anzalone, A.. INAF - Istituto di Astrofisica Spaziale e Fisica Cosmica di Palermo; Italia
Fil: Arai, Y.. High Energy Accelerator Research Organization (KEK); Japón
Fil: Asano, K.. Tokyo Institute of Technology; Japón
Fil: Ave Pernas, M.. Universidad de Alcala (UAH); España
Fil: Barrillon, P.. Univ Paris-Sud; Francia
Fil: Batsch, T.. National Centre for Nuclear Research; Polonia
Fil: Bayer, J.. University of Tubingen; Alemania
Fil: Bechini, R.. Universita’ di Torino; Italia
Fil: Belenguer, T.. Instituto Nacional de Tecnica Aeroespacial (INTA); España
Fil: Bellotti, R.. Istituto Nazionale di Fisica Nucleare; Italia
Fil: Belov, K.. University of California; Estados Unidos
Fil: Berlind, A. A.. Vanderbilt University; Estados Unidos
Fil: Bertaina, M.. Istituto Nazionale di Fisica Nucleare; Italia
Fil: Biermann, P. L.. Karlsruhe Institute of Technology (KIT); Alemania
Fil: Biktemerova, S.. Joint Institute for Nuclear Research; Rusia
Fil: Blaksley, C.. Univ Paris Diderot; Francia
Fil: Blanc. N.. Swiss Center for Electronics and Microtechnology (CSEM); Suiza
Fil: Blecki, J.. Space Research Centre of the Polish Academy of Sciences (CBK); Polonia
Fil: Blin-Bondil, S.. Ecole Polytechnique; Francia
Fil: Blumer, J.. Karlsruhe Institute of Technology (KIT); Alemania
Fil: Bobik, P.. Institute of Experimental Physics; Eslovaquia
Fil: Bogomilov, M.. University of Sofia; Bulgaria
Fil: Bonamente, M.. University of Alabama in Huntsville; Estados Unidos
Fil: Supanitsky, Alberto Daniel. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: The JEM-EUSO Collaboration.