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CHERCAM: the Cherenkov imager of CREAM experiment

Abstract : 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.
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Submitted on : Friday, October 19, 2007 - 11:03:45 AM
Last modification on : Thursday, November 19, 2020 - 12:58:53 PM

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Y. Sallaz-Damaz, A. Barrau, R. Bazer-Bachi, O. Bourrion, J. Bouvier, et al.. CHERCAM: the Cherenkov imager of CREAM experiment. 6th International Workshop on Ring Imaging Cherenkov Counters (RICH2007), Oct 2007, Trieste, Italy. pp.62-66, ⟨10.1016/j.nima.2008.07.093⟩. ⟨in2p3-00180460⟩



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