Simulation Status of the Top and Bottom Counting Detectors for the ISS-CREAM Experiment

Sinchul Kang , Y Amare , T Anderson , D Angelaszek , N Anthony , K. Cheryian , G H. Choi , M. Copley , S. Coutu , L. Derome (1) , L. Eraud (1) , L. Hagenau , J H. Han , H G. Huh , y S. Hwang , H J. Hyun , S. Im , H.B. Jeon , J A. Jeon , S. Jeong , H J. Kim , K C. Kim , M H. Kim , H Y. Lee , J. Lee , M H. Lee , J.F. Liang , J T. Link , L. Lu , L. Lutz , a Mechaca 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 Clemente , R. Quinn , E.S. Seo , J.R. Smith , P. Walpole , R.P. Weinmann , J. Wu , Y.S. Yoon

1 LPSC - Laboratoire de Physique Subatomique et de Cosmologie

The Cosmic-Ray Energetics And Mass (CREAM) instrument for the International Space Station (ISS) is a detector for studying the origin, acceleration and propagation mechanism of high-energy cosmic rays. The ISS-CREAM instrument is scheduled to launch in 2017 to the ISS. The Top and Bottom Counting Detectors (TCD/BCD) are designed for studying electron and gamma-ray physics. The TCD/BCD are composed of a plastic scintillator and an array of photodiodes The active detection areas of the TCD/BCD are 500 $\times$ 500 mm$^2$ and 600 $\times$ 600 mm$^2$, respectively. The TCD/BCD were completed in 2015 and passed the environmental tests for safety in a space environment. After finishing these tests, the TCD/BCD were integrated with the payload. The TCD is located between the carbon target of the ISS-CREAM instrument and the calorimeter, and the BCD is located below the calorimeter. The TCD/BCD can distinguish between electrons and protons by using the different shapes between electromagnetic and hadronic showers in the high-energy region. We study the TCD/BCD performance in various energy ranges by using GEANT3 simulation data. Here, we present the status of the electron and proton separation study with the TCD/BCD simulation.

Domaines: Instrumentations et Détecteurs [physics.ins-det]

Sinchul Kang, Y Amare, T Anderson, D Angelaszek, N Anthony, et al.. Simulation Status of the Top and Bottom Counting Detectors for the ISS-CREAM Experiment. 35th International Cosmic Ray Conference, Jul 2017, Busan, South Korea. pp.250, ⟨10.22323/1.301.0250⟩. ⟨hal-01891010⟩