Balloon borne experiment with CALET prototype

Y. Shimizu*, S. Torii, K. Kasahara, Y. Akaike, Y. Fukuta, K. Hidaka, K. Taira, T. Tamura, K. Yoshida, Y. Katayose, H. Murakami

*この研究の対応する著者

研究成果査読

4 被引用数 (Scopus)

抄録

We carried out a balloon observation of cosmic rays with a prototype of the CALET (bCALET-1) at the Sanriku Balloon Center of the Japan Aerospace Exploration Agency. The main purpose of the experiment was verification of the CALET. The detector consists of 1024 scintillating fibers for precise imaging and 24 BGO scintillator for total absorption of showers. The observation was carried at an altitude between 35 and 37 km for about 3.5 hours. We measured electrons in the energy region between 1 to 10 GeV. The prototype system was verified in the balloon environment. We have obtained the electron flux which is useful to investigate solar modulation. In combination with the flux between 10 to 100GeV measured by BETS, rigidity cutoff effect was clearly observed. These results showed good agreement with that of our Monte-Carlo simulation and demonstrated the detection capability of the CALET in the enegy region below 10 GeV. Now we are planning a series of balloon experiments with larger-scale detectors and longer-duration flights, which include one-month observation by a super-pressure balloon.

本文言語English
ページ(範囲)165-168
ページ数4
ジャーナルjournal of the physical society of japan
78
SUPPL. A
DOI
出版ステータスPublished - 2009

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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