High-energy electron observations from 30 GeV to 3 TeV with emulsion chambers

Tadashi Kobayashi, Yoshiko Komori, Kenji Yoshida, Jun Nishimura

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We have observed high-energy cosmic-ray electrons from 30 GeV to 3 TeV with emulsion chambers at balloon altitudes, accumulating the total exposure of 8.19 m2.sr.day. In the observations, we have carried out particle identification event by event with a proton rejection power of 1×105 in TeV region, which is one of the outstanding capabilities of the emulsion chambers. The performance of the emulsion chambers was examined by accelerator beam tests at CERN-SPS and Monte-Carlo simulations. We also estimated the atmospheric electron spectra in a reliable way, and carried out on-board calibrations by using flight data. In the study of cosmic-ray electrons, it is indicated that highenergy electrons above a few 100 GeV are a powerful probe to identify nearby cosmic-ray sources and search for dark matter. In this paper, we present the final result of energy spectrum of high-energy cosmic-ray electrons observed with emulsion chambers in the energy range from 30 GeV to 3 TeV.

Original languageEnglish
Title of host publicationProceedings of the 32nd International Cosmic Ray Conference, ICRC 2011
PublisherInstitute of High Energy Physics
Pages63-66
Number of pages4
Volume6
DOIs
Publication statusPublished - 2011
Event32nd International Cosmic Ray Conference, ICRC 2011 - Beijing
Duration: 2011 Aug 112011 Aug 18

Other

Other32nd International Cosmic Ray Conference, ICRC 2011
CityBeijing
Period11/8/1111/8/18

Fingerprint

high energy electrons
emulsions
chambers
cosmic rays
electrons
balloons
rejection
energy
dark matter
energy spectra
accelerators
flight
protons
probes
simulation

Keywords

  • Balloon
  • Cosmic-ray electrons
  • Supernova remnants

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Kobayashi, T., Komori, Y., Yoshida, K., & Nishimura, J. (2011). High-energy electron observations from 30 GeV to 3 TeV with emulsion chambers. In Proceedings of the 32nd International Cosmic Ray Conference, ICRC 2011 (Vol. 6, pp. 63-66). Institute of High Energy Physics. https://doi.org/10.7529/ICRC2011/V06/0805

High-energy electron observations from 30 GeV to 3 TeV with emulsion chambers. / Kobayashi, Tadashi; Komori, Yoshiko; Yoshida, Kenji; Nishimura, Jun.

Proceedings of the 32nd International Cosmic Ray Conference, ICRC 2011. Vol. 6 Institute of High Energy Physics, 2011. p. 63-66.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kobayashi, T, Komori, Y, Yoshida, K & Nishimura, J 2011, High-energy electron observations from 30 GeV to 3 TeV with emulsion chambers. in Proceedings of the 32nd International Cosmic Ray Conference, ICRC 2011. vol. 6, Institute of High Energy Physics, pp. 63-66, 32nd International Cosmic Ray Conference, ICRC 2011, Beijing, 11/8/11. https://doi.org/10.7529/ICRC2011/V06/0805
Kobayashi T, Komori Y, Yoshida K, Nishimura J. High-energy electron observations from 30 GeV to 3 TeV with emulsion chambers. In Proceedings of the 32nd International Cosmic Ray Conference, ICRC 2011. Vol. 6. Institute of High Energy Physics. 2011. p. 63-66 https://doi.org/10.7529/ICRC2011/V06/0805
Kobayashi, Tadashi ; Komori, Yoshiko ; Yoshida, Kenji ; Nishimura, Jun. / High-energy electron observations from 30 GeV to 3 TeV with emulsion chambers. Proceedings of the 32nd International Cosmic Ray Conference, ICRC 2011. Vol. 6 Institute of High Energy Physics, 2011. pp. 63-66
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