Measurement of Cosmic-Ray Nuclei with the Third Flight of the CREAM Balloon-Borne Experiment

• Published in: Proceedings of 35th International Cosmic Ray Conference — PoS(ICRC2017)
• Main Authors: Smith, Jacob, Amare, Yonas, Anderson, Tyler, Angelaszek, D, Anthony, N, Cheryian, K., Choi, G.H., Copley, M., Coutu, S., Derome, L., Eraud, L., Hagenau, Lillian, Han, J.H., Huh, Hyun-Gue, Im, S., Jeon, J.A., Jeong, S., Kim, K.C., Kim, M.H., Lee, H.Y., Lee, J., Lee, M.H., Liang, Jennifer, Link, J.T., Lu, L, Lutz, Larry, Menchaca-Rocha, Arturo, Mernik, Thomas, Mitchell, J.W., Mognet, S.I., Morton, S., Nester, M., Nutter, S., Ofoha, Oluchi, Park, I.H., Picot-Clemente, Nicolas, Quinn, R., Seo, Eun-Suk, Walpole, Peter, Weinmann, Ryu-Sung Peter, Wu, Jayoung, Yoon, Y.S.
• Other Authors: Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)
• Format: Conference Object
• Language: English
• Published: HAL CCSD 2017
• Subjects: [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]; Antarc*; Antarctica
• Online Access: https://hal.science/hal-01890823; https://doi.org/10.22323/1.301.0198

International audience The balloon-borne Cosmic Ray Energetics And Mass experiment had its third flight (CREAM-III) over Antarctica for 29 days from December 17, 2007 to January 19, 2008. CREAM-III was designed to directly measure the elemental spectra of cosmic-ray nuclei from Hydrogen to Iron in the energy range from 10^12 to 10^15 eV. Energy of incident cosmic rays was measured with a calorimeter that consisted of a densified carbon target directly above a stack of 20 alternating layers of tungsten and scintillating fiber ribbons. Multiple charge measurements were independently made with the silicon charge detector (SCD), Cherenkov Camera (CherCam), and a Timing Charge Detector (TCD) in order to identify particles and minimize backscattering effects from the calorimeter. Compared to previous CREAM flights, the electronic noise of CREAM-III was reduced, significantly lowering the energy threshold. Results from on-going analysis of the energy spectra will be presented.