Annual meeting of the Swiss Physical Society 2018

【373】 Measuring the Beryllium Isotopic Composition in Cosmic Rays with the Alpha Magnetic Spectrometer on the International Space Station

29 Aug 2018, 18:30

1h 30m

Salle polyvalente (EPFL)

Poster Nuclear, Particle- and Astrophysics (TASK) Poster Session

Speaker

Jiahui Wei (Universite de Geneve (CH))

Description

The Beryllium isotopic composition in cosmic rays provides essential information for the study of the propagation of cosmic rays in the Galaxy. The Alpha Magnetic Spectrometer (AMS) installed on the International Space Station (ISS) provides the opportunity to measure this composition in the energy range from ~1 GeV/n to ~10 GeV/n with unprecedented precision. For events selected with a specific nuclear charge, the velocity measured by the Ring Imaging Cherenkov (RICH) detector and the rigidity measured by the silicon tracker give a measurement of the particle mass. A method to extract the relative isotopic abundances from the mass distribution will be presented.