The PAMELA apparatus is installed on board of the Russian satellite Resurs DK-1 in a low Earth orbit with an inclination of about 70 degrees and altitudes between 350 to 600 km. The satellite has 3-axes stabilization with pointing accuracy better than one degree. PAMELA instrument was developed for the study of an antimatter component of cosmic rays in near-earth space in the energy range 80 MeV - 190 GeV for antiprotons and 50 MeV - 270 GeV for positrons. The device is also capable to measure charged particle spectra of protons, electrons and light nuclei, with a large statistic along its orbit. The PAMELA apparatus comprises a time-of-flight system, a magnetic spectrometer, a silicon-tungsten electromagnetic calorimeter, an anticoincidence system, a shower tail catcher scintillator and a neutron detector. Good angular resolution of Pamela's tracking system make it possible to measure direction of particles flight in space with high accuracy. That allows to reconstruct pitch-angular distributions of particles in geomagnetic field (in South Atlantic Anomaly). Angular efficiency of the instrument was calculated by Monte-Carlo modeling. Here it is described a method to reconstruct pitch-angular distribution. This method is very important for analysis of trapped particle in the radiation belt and is uses for data processing in PAMELA-experiment. Pitch- Angular distributions was obtained on boundaries of SAA for proton.
A method of pitch angle distribution reconstruction in pamela experiment / Malakhov, V.V.; Mikhailov, V.V.; Grishantseva, L.A.; A, .; Adriani, O.; Barbarino, G.; Bazilevskaya, G.A.; Bellotti, R.; Boezio, M.; Bogomolov, E.A.; Bonechi, L.; Bongi, M.; Bonvicini, V.; Borisov, S.V.; Bottai, S.; Bruno, A.; Cafagna, F.; Campana, D.; Carlson, P.; Casolino, M.; Castellini, G.; De Pascale, M.P.; Di Felice, V.; Galper, A.M.; Hofverberg, P.; Leonov, A.A.; Koldashov, S.V.; Krutkov, S.Yu.; Kvashnin, A.N.; Malvezzi, V.; Marcelli, L.; Menn, W.; Mocchiutti, E.; Osteria, G.; Papini, P.; Pearce, M.; Picozza, P.; Ricci, M.; Ricciarini, S.; Simon, M.; De Simone, N.; Sparvoli, R.; Spillantini, P.; Stozhkov, Yu.I.; Vacchi, A.; Vannuccini, E.; Vasiliev, G.V.; Voronov, S.A.; Yurkin, Yu.T.; Zampa, G.; Zampa, N.; Zverev, V.G.. - ELETTRONICO. - (2009), pp. 1-3. (Intervento presentato al convegno 31st International Cosmic Ray Conference, ICRC 2009 tenutosi a Lodz, pol nel 2009).
A method of pitch angle distribution reconstruction in pamela experiment
ADRIANI, OSCAR;BONGI, MASSIMO;
2009
Abstract
The PAMELA apparatus is installed on board of the Russian satellite Resurs DK-1 in a low Earth orbit with an inclination of about 70 degrees and altitudes between 350 to 600 km. The satellite has 3-axes stabilization with pointing accuracy better than one degree. PAMELA instrument was developed for the study of an antimatter component of cosmic rays in near-earth space in the energy range 80 MeV - 190 GeV for antiprotons and 50 MeV - 270 GeV for positrons. The device is also capable to measure charged particle spectra of protons, electrons and light nuclei, with a large statistic along its orbit. The PAMELA apparatus comprises a time-of-flight system, a magnetic spectrometer, a silicon-tungsten electromagnetic calorimeter, an anticoincidence system, a shower tail catcher scintillator and a neutron detector. Good angular resolution of Pamela's tracking system make it possible to measure direction of particles flight in space with high accuracy. That allows to reconstruct pitch-angular distributions of particles in geomagnetic field (in South Atlantic Anomaly). Angular efficiency of the instrument was calculated by Monte-Carlo modeling. Here it is described a method to reconstruct pitch-angular distribution. This method is very important for analysis of trapped particle in the radiation belt and is uses for data processing in PAMELA-experiment. Pitch- Angular distributions was obtained on boundaries of SAA for proton.
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