  The Alpha Magnetic Spectrometer experiment is realized in two phases. A
precursor flight (STS-91) with a reduced experimental configuration (AMS01) has
successfully flown on space shuttle Discovery in June 1998. The final version
(AMS02) will be installed on the International Space Station (ISS) as an
independent module in early 2006 for an operational period of three years. The
main scientific objectives of AMS02 include the searches for the antimatter and
dark matter in cosmic rays. In this work we will discuss the experimental
details as well as the improved physics capabilities of AMS02 on ISS.
