The PAMELA experiment

Physics

Scientific paper

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Scientific paper

The PAMELA equipment is in the assembling phase and in the next months will be installed on board of the Russian satellite Resurs DK; the launch is foreseen at the end of 2002. PAMELA is conceived to study the antiproton and positron fluxes in cosmic rays up to high energies: 190 GeV for p and 270 GeV for e+ . Other scientific purposes can be enumerated: search of antinuclei up to 30 GeV/n, with a sensitivity 10-7 in the He/He ratio; determination of energy spectrum for nuclei with Z ≤ 6 and for e- ; measurement of the isotopic composition of light cosmic nuclei; monitoring of the cosmic ray flux at different phases of the solar cycle and study of the particles emitted in solar flares. During these years, from the first proposal of the experiment (1993) up to now, the configuration of the apparatus has been optimized doing simulations and tests, concerning both the physics and the technical characteristics. In this paper we report about the performances of all the detectors and the capability of the telescope in cosmic ray measurements.

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