Cosmic ray energetics and mass (CREAM) overview

E. S. Seo, H. S. Ahn, P. S. Allison, M. G. Bagliesi, L. Barbier, A. Barrau, R. Bazer-Bachi, J. J. Beatty, G. Bigongiari, P. J. Boyle, T. J. Brant, M. Buénerd, J. T. Childers, N. B. Conklin, S. Coutu, L. Derome, M. A. Duvernois, O. Ganel, J. H. Han, J. A. JeonK. C. Kim, J. K. Lee, M. H. Lee, J. Link, L. Lutz, P. Maestro, A. Malinin, M. Mangin-Brinet, P. S. Marrocchesi, A. Menchaca-Rocha, S. Minnick, S. I. Mognet, S. Nam, S. Nutter, I. H. Park, N. H. Park, A. Putze, R. Sina, S. Swordy, S. P. Wakely, P. Walpole, J. Wu, J. Yang, J. H. Yoo, Y. S. Yoon, R. Zei, S. Y. Zinn

Research output: Contribution to conferencePaperpeer-review

2 Scopus citations

Abstract

The Cosmic Ray Energetics And Mass balloon-borne experiment has accumulated 70 days of exposure during two successful flights in Antarctica. The instrument is configured with complementary and redundant particle detectors. Energy measurements are made with a transition radiation detector and an ionization calorimeter. Charge measurements are made with timing, pixelated Si, and Cherenkov detectors to provide powerful rejection of backscatter particles. High energy cosmic-ray data from the first two flights were collected over a wide energy range from ∼ 10 GeV to ∼ 1 PeV at an average altitude of ∼38.5 km (∼3.9 g/cm2 atmospheric overburden). Preliminary analysis indicates the data extend well above 100 TeV and follow reasonable power laws. All elements from protons to Fe nuclei are separated with excellent charge resolution. The payload recovered from the first flight has been refurbished and is being integrated in preparation for the third launch, scheduled for December 2007. Simultaneously, the payload recovered from the second flight is being refurbished for a subsequent fourth flight. Results from the ongoing analysis and future plans will be presented.

Original languageEnglish (US)
Pages47-50
Number of pages4
StatePublished - 2007
Event30th International Cosmic Ray Conference, ICRC 2007 - Merida, Yucatan, Mexico
Duration: Jul 3 2007Jul 11 2007

Other

Other30th International Cosmic Ray Conference, ICRC 2007
CountryMexico
CityMerida, Yucatan
Period7/3/077/11/07

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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