The PAMELA experiment is a satelliteborne apparatus designed to study charged particles in the cosmic radiation, with a particular focus on antiparticles. The detector is housed on the Resurs-DK1 satellite and it is taking data since June 2006. The main parts of the apparatus are a magnetic spectrometer, which is equipped with a silicon-microstrip tracking system and which is used to measure the rigidity and the charge of particles, and a silicon/tungsten electromagnetic calorimeter which provides particle identification. The results of the analysis of the antiproton-to-proton flux ratio between 1 and 100 GeV which employs the data collected in 500 days is presented here. A total of about 1000 antiprotons have been identified, including 100 above an energy of 20 GeV.
The high-energy antiproton-to-proton flux ratio with the PAMELA experiment / Bongi, M.; Adriani, O.; Barbarino, G.C.; Bazilevskaya, G.A.; Bellotti, R.; Boezio, M.; Bogomolov, E.A.; Bonechi, L.; Bonvicini, V.; Bottai, S.; Bruno, A.; Cafagna, F.; Campana, D.; Carlson, P.; Casolino, M.; Castellini, G.; Pascalede, M.P.; Rosade, G.; De Simone, N.; Di Felice, V.; Galper, A.M.; Grishantseva, L.; Hofverberg, P.; Koldashov, S.; Krutkov, S.Y.; Kvashnin, A.; Leonov, A.A.; Malvezzi, V.; Marcelli, L.; Menn, W.; Mikhailov, V.V.; Mocchiutti, E.; Osteria, G.; Papini, P.; Pearce, M.; Picozza, P.; Ricci, M.; Ricciarini, S.B.; Simon, M.; Sparvoli, R.; Spillantini, P.; Stozhkov, Y.I.; Vacchi, A.; Vannuccini, E.; Vasiliev, G.V.; Voronov, S.; Yurkin, Y.T.; Zampa, G.; Zampa, N.; Zverev, V.G.. - ELETTRONICO. - (2009), pp. 1-4. (Intervento presentato al convegno 31st International Cosmic Ray Conference, ICRC 2009).
The high-energy antiproton-to-proton flux ratio with the PAMELA experiment
BONGI, MASSIMO;ADRIANI, OSCAR;
2009
Abstract
The PAMELA experiment is a satelliteborne apparatus designed to study charged particles in the cosmic radiation, with a particular focus on antiparticles. The detector is housed on the Resurs-DK1 satellite and it is taking data since June 2006. The main parts of the apparatus are a magnetic spectrometer, which is equipped with a silicon-microstrip tracking system and which is used to measure the rigidity and the charge of particles, and a silicon/tungsten electromagnetic calorimeter which provides particle identification. The results of the analysis of the antiproton-to-proton flux ratio between 1 and 100 GeV which employs the data collected in 500 days is presented here. A total of about 1000 antiprotons have been identified, including 100 above an energy of 20 GeV.I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.