Author/Authors :
E.S. Seo، نويسنده , , H.S. Ahn، نويسنده , , J.J. Beatty، نويسنده , , S. Coutu، نويسنده , , M.J. Choi، نويسنده , , M.A. DuVernois، نويسنده , , O. Ganel، نويسنده , , T.G. Kang، نويسنده , , K.C. Kim، نويسنده , , M.H. Lee، نويسنده , , L. Lutz، نويسنده , , P.S. Marrocchesi، نويسنده , , S. Minnick، نويسنده , , K.W. Min، نويسنده , , S. Nutter، نويسنده , , H. Park، نويسنده , , I.H. Park، نويسنده , , E. Schindhelm، نويسنده , , R. Sina، نويسنده , , S. Swordy، نويسنده , , et al.، نويسنده ,
Abstract :
The cosmic-ray energetics and mass (CREAM) investigation is designed to measure cosmic-ray composition to the supernova energy scale of 1015 eV in a series of ultra long duration balloon (ULDB) flights. The first flight is planned to be launched from Antarctica in December 2004. The goal is to observe cosmic-ray spectral features and/or abundance changes that might signify a limit to supernova acceleration. The particle charge (Z) measurements will be made with a timing-based charge detector and a pixelated silicon charge detector to minimize the effect of backscatter from the calorimeter. The particle energy measurements will be made with a transition radiation detector (TRD) for Z>3 and a sampling tungsten/scintillator calorimeter for Z⩾1 particles, allowing inflight cross calibration of the two detectors. The status of the payload construction and flight preparation are reported in this paper.
Keywords :
Scientfic balloon payloads , Cosmic-ray measurements , Particle detectors , CREAM
