Author/Authors :
Marrocchesi، نويسنده , , P.S. and Ahn، نويسنده , , H.S. and Bagliesi، نويسنده , , M.G. and Basti، نويسنده , , A. and Bigongiari، نويسنده , , G. and Castellina، نويسنده , , A. and Ganel، نويسنده , , O. and Lee، نويسنده , , M.H. and Lomtadze، نويسنده , , T. and Lutz، نويسنده , , L. and Maestro، نويسنده , , P. and Malinine، نويسنده , , A. and Meucci، نويسنده , , M. and Millucci، نويسنده , , V. and Morsani، نويسنده , , F. and Seo، نويسنده , , E.S.، نويسنده ,
Abstract :
Cosmic Ray Energetics And Mass (CREAM) is a balloon-borne experiment designed to perform direct measurements of cosmic ray composition over the elemental range from proton to iron to the supernova energy scale of 10 15 eV in a series of balloon flights using the new Ultra Long Duration Balloon (ULDB) capability under development by NASA. The first flight of CREAM will take place at the end of 2004 from Antarctica. The instrument includes a sampling tungsten/scintillating fiber calorimeter preceded by a graphite target with scintillating fiber hodoscopes, a pixelated silicon charge detector, a transition radiation detector and a segmented timing-based particle-charge detector. The thin ionization calorimeter has been designed to operate in the range of energies from a few hundred GeV to 1 PeV providing imaging capability in the reconstruction of the showers originating from the interaction of primary nuclei in the carbon target. A twin calorimeter for the second CREAM payload has been built and tested at CERN. Its construction technique and preliminary test results are presented.
