The Alpha Magnetic Spectrometer (AMS-02) is a large acceptance particle physics detector, operating onboard the International Space Station (ISS) since May 2011. The main goals of AMS-02 are the search for antimatter and dark matter, and the precise measurements of cosmic rays composition and flux.
The study of the electromagnetic component of the cosmic rays, namely electrons, positrons, is of primary importance in the search for primordial antimatter and dark matter in the Universe.
The present seminary will describe the methods to identify electrons and positrons in cosmic rays in GeV to TeV region, and will describe the performances of AMS-02 in this context. Particular emphasis will be given to the latest AMS positron fraction measurement, that will be published this week.
