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6th International Workshop on Ring Imaging Cherenkov Counters (RICH2007), Trieste : Italie (2007)
CHERCAM: the Cherenkov imager of CREAM experiment
Y. Sallaz-Damaz1, A. Barrau1, R. Bazer-Bachi2, O. Bourrion1, J. Bouvier1, B. Boyer1, M. Buénerd1, L. Derome1, L. Eraud1, R. Foglio1, L. Gallin-Martel1, O. Ganel, C.H. Kim, L. Lutz, A. Malinine, M. Mangin-Brinet1, A. Menchaca-Rocha, J.N. Périé2, J.P. Scordilis1, E.S. Seo, P. Walpole, S.Y. Zinn
CREAM Collaboration(s)

A Cherenkov imager, CHERCAM (CHERenkov CAMera), has been designed and built for the CREAM (Cosmic-Ray Energetic and Mass) balloon-borne experiment. The instrument will perform charge measurements of nuclear cosmic-ray over a range extending from proton to iron. It will achieve individual charge separation of the elements over this range [M. Buénerd, et al., in: 28th ICRC, Tsukuba, Japan, OG 1.5, 2003, p. 2157. [2]] (0:25 charge unit rms), allowing measurements of the energy spectra of individual elements by the CREAM instrument in the energy range from 1010 to 1015 eV. CHERCAM is a proximity focused imager, based on a dedicated mechanical structure, equipped with an n ¼ 1:05 silica aerogel radiator plane, separated by a 12 cm ring expansion gap from a photon detector plane consisting of a 1600 photomultiplier array, backed with dedicated front-end readout electronics. A prototype of the detector has been recently tested with 100 and 300 GeV/c Z ¼ 1 particle beams at CERN. The contribution reports on both the beam test results of the prototype, and of the counter performance in ground operation.
1 :  LPSC - Laboratoire de Physique Subatomique et de Cosmologie
2 :  CESR - Centre d'étude spatiale des rayonnements
Physique/Astrophysique/Cosmologie et astrophysique extra-galactique

Physique/Physique/Instrumentations et Détecteurs

Planète et Univers/Astrophysique