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Volume 301 - 35th International Cosmic Ray Conference (ICRC2017) - Session Cosmic-Ray Direct. CRD- direct measurements
The Cosmic Ray Energetics And Mass for the International Space Station (ISS-CREAM) Instrument
J. Smith,* Y. Amare, T. Anderson, D. Angelaszek, N. Anthony, K. Cheryian, G.H. Choi, M. Copley, S. Coutu, L. Derome, L. Eraud, L. Hagenau, J.H. Han, H.G. Huh, Y.S. Hwang, H.J. Hyun, S. Im, H.B. Jeon, J.A. Jeon, S. Jeong, S.C. Kang, H.J. Kim, K.C. Kim, M.H. Kim, H.Y. Lee, J. Lee, M.H. Lee, J. Liang, J.T. Link, L. Lu, L. Lutz, A. Menchaca-Rocha, T. Mernik, J.W. Mitchell, S.I. Mognet, S. Morton, M. Nester, S. Nutter, O. Ofoha, H. Park, I.H. Park, J.M. Park, N. Picot-Cl'emente, R. Quinn, E.S. Seo, P. Walpole, R.P. Weinmann, J. Wu, Y.S. Yoon
*corresponding author
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Pre-published on: 2017 August 16
Published on:
Abstract
The Cosmic Ray Energetics And Mass for the International Space Station (ISS-CREAM) instrument is designed and built to measure elemental spectra of cosmic-ray nuclei (1 ≤ Z ≤ 26) and electrons. It will measure energy of incident cosmic rays from 1011 to 10^15 eV with a tungsten/scintillator sampling calorimeter and densified carbon target with an interaction length of ~ 1 λL. A finely segmented, four-layer silicon charge detector will identify the elemental composition with a resolution of ~ 0.15e. The instrument is triggered by selectable, independent, and combined algorithms from the calorimeter and a scintillator-based counting detector on the top and bottom of the calorimeter. The counting detectors also provide separation of protons and electrons using differences in the shower shapes. A boronated scintillator detector provides additional e/p separation by looking at late scintillation light produced by a particle interacting in the calorimeter system. ISS-CREAM underwent vibrational, electromagnetic, thermal/vacuum, and telemetry systems tests at various NASA f acilities to qualify for rocket transportation and space operations. All testing and integration were completed and ISS-CREAM was delivered to NASA. It is now flight ready and waiting for launch on SpaceX-12 in 2017. ISS-CREAM integration, environmental qualification, and instrument performance will be presented.
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