A. Tiberio,a,∗ O. Adriani,a,b E. Berti,a,b L. Bonechi,a M. Bongi,a,b R. D’Alessandro,a,b G. Castellini,c M. Haguenauer,d Y. Itow,e, f K. Kasahara, M. Kondo,e Y. Matsubara,e H. Menjo,e Y. Muraki,e K. Ohashi,e P. Papini,a S. Ricciarini,a,c T. Sako,h N. Sakurai,i K. Sato,e Y. Shimizu, j T. Tamura,k S. Torii,k A. Tricomi,l,m,n W. C. Turner,o M. Uenoe and K. Yoshida INFN Section of Florence, Florence, Italy University of Florence, Florence, Italy IFAC-CNR, Florence, Italy Ecole-Polytechnique, Palaiseau, France Institute for Space-Earth Environmental Research, Furo-cho, Chikusa-ku, Nagoya, Japan Kobayashi-Maskawa Institute for the Origin of Particles and the Universe, Nagoya University, Nagoya, Japan Faculty of System Engineering, Shibaura Institute of Technology, Tokyo, Japan Institute for Cosmic Ray Research, University of Tokyo, Chiba, Japan Tokushima University, Tokushima, Japan Kanagawa University, Kanagawa, Japan RISE, Waseda University, Shinjuku, Tokyo, Japan INFN Section of Catania, Catania, Italy University of Catania, Catania, Italy CSFNSM, Catania, Italy LBNL, Berkeley, California, USA

В настоящее время существующие данные об энергетических спектрах электронов, протонов и ядер гелия в области высоких энергий разрозненны, причем ситуация усугубляется их малым количеством. В спутниковом эксперименте ПАМЕЛА из-за ограничений в использовании магнитного спектрометра для измерений в области высоких энергий необходимо использовать калориметр. Обработка экспериментальных данных, накопленных более чем за 8 лет измерений, с использованием информации калориметра, нейтронного детектора и сцинтилляционных счетчиков позволила получить спектры частиц высоких энергий, что должно в конечно счете существенно расширить наши представления о природе первичных космических лучей.

In the framework of the PAMELA experiment the features of the large-scale anisotropy have been measured within the energy range 1-20 TeV/n. The measurements were carried out with the use of the calorimeter on the base of the hypothesis about the existence of a dipole anisotropy. The amplitude and phase of the dipole were obtained. The results are in agreement with the ground-based observations.

Imaging calorimeter of the PAMELA instrument on board the Resurs DK satellite has high spatial resolution and allows to measure separately electromagnetic showers from electrons and positrons and their bremsstahlung produced in ToF detectors of the instrument. Measuring events with two showers provides proton rejection coefficient more than 10 4 at energy between 0.5 and 3 GeV. Results of positrons fractions obtained by this method are in agreement with previously published data of the PAMELA experiment at low energy. It confirms in independent way strong positron modulation during period of negative polarity of the Sun magnetic field

The PAMELA (Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics) satellite-borne experiment has been collecting data in orbit since July 2006, providing accurate measurements of the energy spectra and composition of the cosmic radiation from a few hundred MeVn up to hundred GeVn. This wide interval of measured energies makes PAMELA a unique instrument for Solar Energetic Particle (SEP) observations. Not only does it span the energy range between the ground-based neutron monitor data and the observations of SEPs from space, but also PAMELA carries out the first direct measurements of the composition for the highest energy SEP events, including those causing Ground Level Enhancements (GLEs). PAMELA has registered many SEP events in solar cycle 24 including the 2012 May 17 GLE event (GLE 71), offering unique opportunities to address the question of high-energy SEP origin. Experimental performances and preliminary results on the 2012 May 17 events will be presented. We will discuss the derived particle injection time and compare with other time scales at the Sun including the flare and CME onset times.

The latest measurements of antiprotons spectrum and antiproton-to-proton ratio in primary cosmic rays with PAMELA experiment are presented. They are in good agreement with model of secondary produc ...

The very intense Jovian magnetic field generates a magnetosphere with high-energy electrons and protons. We have investigated whether the proton data obtained by the PAMELA space-borne instrument in 2006-2009 exhibit a signature which could be attributed to the Jupiter magnetosphere. We find a synusoidal behaviour which is consistent with the synodic period of Jupiter of 398.88 days.

PAMELA is a satellite-borne experiment designed to study charged particles in the cosmic radiation with a particular interest in antiparticles. The experiment is collecting data since July 2006 on board of the Russian Resurs DK1 satellite, which travels along a semipolar elliptical orbit arount the Earth. The PAMELA apparatus includes a magnetic spectrometer, which is composed of 6 planes of silicon microstrip detectors dipped in an almost-uniform magnetic eld generated by a permanent magnet made of Nd-Fe-B alloy. The spectrometer has been designed to determine precisely the rigidity (up to 1 TeV) and the absolute charge (up to Z=6) of particles crossing the detector. In the rst part a short review of the magnetic spectrometer design is given and the main spectrometer operations in ight are described. The main topic of this article is the procedure to measure the rigidity, described in the second part. Particular focus is put on the position-nding algorithm. In fact, recent theoretical and experimental results have shown that in case of inclined tracks a signicant systematic shift can be present, if the proper algorithm is not applied. Finally, some preliminary results are presented.