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Proceedings Paper

The Cosmic Ray Energetics and Mass (CREAM) experiment timing charge detector
Author(s): James J. Beatty; H. S. Ahn; P. S. Allison; M. J. Choi; N. Conklin; Stephane Coutu; Michael A. DuVernois; O. Ganel; S. Jaminion; K. C. Kim; M. H. Lee; L. Lutz; Pier Simone Marrocchesi; S. Minnick; S. I. Mognet; Kyung-wook Min; S. L. Nutter; H. Park; I. H. Park; K. Petska; E. Schindhelm; Eun-Suk Seo; Simon P. Swordy; J. Wu; J. Yang
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Paper Abstract

The cosmic ray all-particle spectrum has a small steepening of its spectral slope, or 'knee', near 1015 eV. Changes in the nuclear composition of cosmic rays may be associated with the knee and provide clues concerning the origin of the spectral change. An ultra-long duration balloon experiment, Cosmic Ray Energetics and Mass (CREAM), is being constructed to measure cosmic ray elemental spectra at energies just below the knee to look for evidence of changes in composition. CREAM employs a thin calorimeter and transition radiation detector to provide multiple measures of the particle energy. A novel technique, the timing charge detector, is used to identify the charge of the incident primary cosmic ray in the presence of the albedo particles generated by interactions in the calorimeter.

Paper Details

Date Published: 3 March 2003
PDF: 7 pages
Proc. SPIE 4858, Particle Astrophysics Instrumentation, (3 March 2003); doi: 10.1117/12.458542
Show Author Affiliations
James J. Beatty, The Pennsylvania State Univ. (United States)
H. S. Ahn, Univ. of Maryland/College Park (United States)
P. S. Allison, The Pennsylvania State Univ. (United States)
M. J. Choi, Ewha Womans Univ. (South Korea)
N. Conklin, The Pennsylvania State Univ. (United States)
Stephane Coutu, The Pennsylvania State Univ. (United States)
Michael A. DuVernois, Univ. of Minnesota/Twin Cities (United States)
O. Ganel, Univ. of Maryland/College Park (United States)
S. Jaminion, The Pennsylvania State Univ. (United States)
K. C. Kim, Univ. of Maryland/College Park (United States)
M. H. Lee, Univ. of Maryland/College Park (United States)
L. Lutz, Univ. of Maryland/College Park (United States)
Pier Simone Marrocchesi, Univ. degli Studi di Siena (Italy)
INFN (Italy)
S. Minnick, The Pennsylvania State Univ. (United States)
S. I. Mognet, The Pennsylvania State Univ. (United States)
Kyung-wook Min, Korea Advanced Institute of Science and Technology (South Korea)
S. L. Nutter, Northern Kentucky Univ. (United States)
H. Park, Kyungpook National Univ. (South Korea)
I. H. Park, Ewha Womans Univ. (South Korea)
K. Petska, The Pennsylvania State Univ. (United States)
E. Schindhelm, Univ. of Maryland/College Park (United States)
Eun-Suk Seo, Univ. of Maryland/College Park (United States)
Simon P. Swordy, Univ. of Chicago (United States)
J. Wu, Univ. of Maryland/College Park (United States)
J. Yang, Ewha Womans Univ. (South Korea)


Published in SPIE Proceedings Vol. 4858:
Particle Astrophysics Instrumentation
Peter W. Gorham, Editor(s)

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