The Alpha Magnetic Spectrometer on the International Space Station

The Alpha Magnetic Spectrometer (AMS) is a particle physics detector designed to measure charged cosmic ray spectra up to the TV region, with high-energy photon detection capability up to few hundred GeV. AMS is a superconducting spectrometer with large acceptance, long duration (at least three years for the magnet) and state of the art particle identification techniques. AMS will investigate the composition of cosmic rays with high statistics and provide the most sensitive search for the existence of antimatter nuclei and for the nature of dark matter. The detector is being constructed with an eight-layer Silicon Tracker inside a large superconducting magnet, providing a ~0.8 Tm2 bending power and an acceptance of ~0.4 m2 sr. A Transition Radiation Detector and a three-dimensional Electromagnetic Calorimeter allow for electron, positron and photon identification, while a Time of Flight scintillating system and a Ring Image Cerenkov detector perform independent velocity measurements. This complex apparatus will identify and measure nuclei up to Iron. We will describe the overall detector construction and performance, which is due to be completed by 2006. The detector will be installed on ISS (International Space Station) in 2008

[1]  Lisa Randall,et al.  Wino cold dark matter from anomaly mediated SUSY breaking , 2000 .

[2]  Ams Collaboration.  Search for antihelium in cosmic rays , 2000, hep-ex/0002048.

[3]  R. R. Daniel,et al.  Relative abundance of antiprotons and antihelium in the primary cosmic radiation , 1978, Nature.

[4]  Turner,et al.  Positron line radiation as a signature of particle dark matter in the halo. , 1990, Physical review. D, Particles and fields.

[5]  A. Strong,et al.  Propagation of Cosmic-Ray Nucleons in the Galaxy , 1998, astro-ph/9807150.

[6]  J.S.H. Ross,et al.  The superconducting magnet system of AMS-02 - a particle physics detector to be operated on the International Space Station , 2002 .

[7]  A. Sakharov.  Violation of CP in variance , C asymmetry , and baryon asymmetry of the universe , 2005 .

[8]  T. Siedenburg.  The AMS TRD. A gasdetector designed for operation in space , 2006 .

[9]  Mauro Menichelli,et al.  The Alpha Magnetic Spectrometer (AMS)on the International Space Station : Part I - results from the test flight on the space shuttle , 2002 .

[10]  A. Strong,et al.  Models for galactic cosmic-ray propagation , 2001, astro-ph/0101068.

[11]  Claudia Cecchi.  The AMS-02 Tracker , 2003 .

[12]  Andrej Dmitrievich Sakharov,et al.  SPECIAL ISSUE: Violation of CP in variance, C asymmetry, and baryon asymmetry of the universe , 1991 .

[13]  Positron propagation and fluxes from neutralino annihilation in the halo , 1998, astro-ph/9808243.

[14]  J. Hagelin,et al.  Supersymmetric relics from the big bang , 1984 .

[15]  C. Pennypacker,et al.  A Measurement of the Cosmic-Ray Antiproton Flux and a Search for Antihelium , 1981 .

[16]  J. Allaby.  Erratum to “The Alpha Magnetic Spectrometer (AMS) on the International Space Station: Part I—results from the test flight on the space shuttle” [Physics Reports 366 (2002) 331–405] , 2003 .

[17]  D. Casadei,et al.  The AMS-02 RICH Imager Prototype - In-Beam Tests with 20 GeV/c per Nucleon Ions - , 2003, astro-ph/0306224.