AMS-01: First flight, first results; future AMS-02

Details AMS-01: First flight, first results; future AMS-02 AMS-01: First flight, first results; future AMS-02

Jun 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aipc..516..335b&link_type=abstract

26TH INTERNATIONAL COSMIC RAY CONFERENCE: ICRC XXVI, Invited, Rapporteur, and Highlight Papers. AIP Conference Proceedings, Vol

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Neutrino, Muon, Pion, And Other Elementary Particle Detectors, Cosmic Ray Detectors, Neutrino, Muon, Pion, And Other Elementary Particles, Cosmic Rays

Scientific paper

The Alpha Magnetic Spectrometer (AMS) was constructed 1995-1997 as a particle spectrometer in space. During the shuttle flight SPS91 June 2-12, 1998 it received 100 h of data in space. No antihelium was found among 2.8 million He nuclei and no antimatter in 156,000 Z>2 nuclei. Protons were measured with very high accuracy, including detailed second spectra below the cutoff. Fits to the spectra above 10 GeV are given. Surprisingly, at the magnetic equator, positrons are four times more copious than electrons. He nuclei below the cutoff are dominantly He3. A short description of the complete detector for the 3 years on the space station ISS is presented. .

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