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CREAM: 70 days of flight from 2 launches in Antarctica |
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| Authors: | ES Seo HS Ahn P Allison MG Bagliesi L Barbier A Barrau R Bazer-Bachi JJ Beatty G Bigongiari P Boyle TJ Brandt M Buénerd JT Childers NB Conklin S Coutu L Derome MA DuVernois O Ganel JH Han JA Jeon KC Kim MH Lee L Lutz A Malinin M Mangin-Brinet PS Marrocchesi P Maestro A Menchaca-Rocha S Minnick SI Mognet S Nam S Nutter IH Park NH Park A Putze R Sina S Swordy S Wakely P Walpole J Wu J Yang YS Yoon R Zei SY Zinn |
| Institution: | 1. Institute for Physical Science and Technology, University of Maryland, College Park, MD 20742, USA;2. Department of Physics, University of Maryland, College Park, MD 20742, USA;3. Department of Physics, Ohio State University, Columbus, OH 43210, USA;4. Department of Physics, University of Siena and INFN, Via Roma 56, 53100 Siena, Italy;5. NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA;6. Laboratorire de Physique Subatomique et de Cosmologie, Grenoble, France;g Centre d’Etude Spatiale des Rayonnements, UFR PCA – CNRS – UPR 8002, Toulouse, France;h Enrico Fermi Institute and Department of Physics, University of Chicago, Chicago, IL 60637, USA;i School of Physics and Astronomy, University of Minnesota, Minneapolis, MN 55455, USA;j Department of Physics, Penn State University, University Park, PA 16802, USA;k Department of Physics, Ewha Womans University, Seoul, 120-750, Republic of Korea;l Instituto de Fisica, Universidad Nacional Autonoma de Mexico, Mexico;m Department of Physics, Kent State University Tuscarawas, New Philadelphia, OH 44663, USA;n Department of Physics and Geology, Northern Kentucky University, Highland Heights, KY 41099, USA |
| Abstract: | The Cosmic-Ray Energetics And Mass balloon-borne experiment has been launched twice in Antarctica, first in December 2004 and again in December 2005. It circumnavigated the South Pole three times during the first flight, which set a flight duration record of 42 days. A cumulative duration of 70 days within 13 months was achieved when the second flight completed 28 days during two circumnavigations of the Pole on 13 January 2006. Both the science instrument and support systems functioned extremely well, and a total 117 GB of data including 67 million science events were collected during these two flights. Preliminary analysis indicates that the data extend well above 100 TeV and follow reasonable power laws. The payload recovered from the first flight has been refurbished for the third flight in 2007, whereas the payload from the second flight is being refurbished to be ready for the fourth flight in 2008. Each flight will extend the reach of precise cosmic-ray composition measurements to energies not previously possible. |
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