Simulated performance of the calorimetric electron telescope (CALET) experiment

Y. Akaike, K. Taira, K. Kasahara, Shoji Torii, Y. Shimizu, K. Yoshida

    Research output: Contribution to journalArticle

    7 Citations (Scopus)

    Abstract

    CALET is a detector planned to be on-board the Japanese Experiment Module Exposed Facility (JEM-EF) of the International Space Station. The CALET mission aims at revealing unsolved problems in high energy phenomena of the Universe by carrying out a precise measurement of the high energy electrons in 1 GeV-20 TeV, the gamma-rays in 20 MeV to a few TeV and the nuclei in a few 10 GeV-1000 TeV. The main detector is composed of imaging calorimeter (IMC), total absorption calorimeter (TASC), silicon pixel array (SIA) and anti-coincidence detector (ACD) to detect various kinds of particles in very wide energy range. The total absorber thickness is 31 radiation lengths for electromagnetic particles and 1.4 interaction mean free paths for protons. Monte Carlo simulation study has been carried out for optimization of the detector performance in observing each kind of particles. We obtained following performance about the observation of very high energy (>100 GeV) electrons, which is a main target of the CALET experiment: (1) Effective geometrical factor is about 7000 cm2 sr. (2) Energy resolution is better than a few %. (3) Angular resolution is better than 0.1°. (4) Proton rejection power is ∼105 with the electron detection efficiency better than 95%. We also present the simulated performance of the CALET experiment in observing other particles.

    Original languageEnglish
    Pages (from-to)690-697
    Number of pages8
    JournalAdvances in Space Research
    Volume45
    Issue number5
    DOIs
    Publication statusPublished - 2010 Mar 1

    Fingerprint

    particle telescopes
    Telescopes
    electron
    Electrons
    detectors
    calorimeters
    Detectors
    experiment
    Experiments
    energy
    protons
    Calorimeters
    International Space Station
    angular resolution
    rejection
    mean free path
    Protons
    high energy electrons
    absorbers
    electrons

    Keywords

    • Calorimeter
    • Cosmic ray electrons
    • Gamma-rays
    • Heavy nuclei
    • International space station
    • Protons

    ASJC Scopus subject areas

    • Aerospace Engineering
    • Space and Planetary Science

    Cite this

    Akaike, Y., Taira, K., Kasahara, K., Torii, S., Shimizu, Y., & Yoshida, K. (2010). Simulated performance of the calorimetric electron telescope (CALET) experiment. Advances in Space Research, 45(5), 690-697. https://doi.org/10.1016/j.asr.2009.11.002

    Simulated performance of the calorimetric electron telescope (CALET) experiment. / Akaike, Y.; Taira, K.; Kasahara, K.; Torii, Shoji; Shimizu, Y.; Yoshida, K.

    In: Advances in Space Research, Vol. 45, No. 5, 01.03.2010, p. 690-697.

    Research output: Contribution to journalArticle

    Akaike, Y, Taira, K, Kasahara, K, Torii, S, Shimizu, Y & Yoshida, K 2010, 'Simulated performance of the calorimetric electron telescope (CALET) experiment', Advances in Space Research, vol. 45, no. 5, pp. 690-697. https://doi.org/10.1016/j.asr.2009.11.002
    Akaike, Y. ; Taira, K. ; Kasahara, K. ; Torii, Shoji ; Shimizu, Y. ; Yoshida, K. / Simulated performance of the calorimetric electron telescope (CALET) experiment. In: Advances in Space Research. 2010 ; Vol. 45, No. 5. pp. 690-697.
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