The Cosmic Ray Energetics and Mass (CREAM) experiment timing charge detector

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

doi:10.1117/12.458542

3 March 2003 The Cosmic Ray Energetics and Mass (CREAM) experiment timing charge detector

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

Author Affiliations +

Proceedings Volume 4858, Particle Astrophysics Instrumentation; (2003) https://doi.org/10.1117/12.458542
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

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.

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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, and J. Yang "The Cosmic Ray Energetics and Mass (CREAM) experiment timing charge detector", Proc. SPIE 4858, Particle Astrophysics Instrumentation, (3 March 2003); https://doi.org/10.1117/12.458542

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