Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-10-04
Electronic publication in Proceedings of the HEPP-EPS International Europhysics Conference on High Energy Physics - http://p
Astronomy and Astrophysics
Astrophysics
4 pages. Contribution to the HEPP-EPS International Europhysics Conference on High Energy Physics (Lisbon 2005). Presenter: Ru
Scientific paper
The Alpha Magnetic Spectrometer (AMS), whose final version AMS-02 is to be installed on the International Space Station (ISS) for at least 3 years, is a detector designed to measure charged cosmic ray spectra with energies up to the TeV region and with high energy photon detection capability up to a few hundred GeV, using state-of-the-art particle identification techniques. Following the successful flight of the detector prototype (AMS-01) aboard the space shuttle, AMS-02 is expected to provide a significant improvement on the current knowledge of the elemental and isotopic composition of hadronic cosmic rays due to its long exposure time (minimum of 3 years) and large acceptance (0.5 m^2 sr) which will enable it to collect a total statistics of more than 10^10 nuclei. Detector capabilities for charge, velocity and mass identification, estimated from ion beam tests and detailed Monte Carlo simulations, are presented. Relevant issues in cosmic ray astrophysics addressed by AMS-02, including the test of cosmic ray propagation models, galactic confinement times and the influence of solar cycles on the local cosmic ray flux, are briefly discussed.
AMS Collaboration
Pereira Rui
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