タムラ タダヒサ   Tamura Tadahisa
  田村 忠久
   所属   神奈川大学  工学部 物理学教室
    神奈川大学大学院  工学研究科 工学専攻(応用物理学領域)
   職種   教授
言語種別 日本語
発行・発表の年月 2009/07
形態種別 学術雑誌
標題 Conceptual Design of Data Acquisition System for CALET on the ISS
執筆形態 共著
掲載誌名 PROCEEDINGS OF THE 31st ICRC, LODZ 2009
巻・号・頁 http://icrc2009.uni.lodz.pl/proc/pdf/icrc0572.pdf
著者・共著者 Tadahisa Tamura, Shoji Torii, Shunsuke Ozawa, Hiroyuki Murakami, Yusaku Katayose, Shin Kubo, Atsumasa Yoshida, Shiro Ueno, Hiroshi Tomida for the CALET Collaboration
概要 国際宇宙ステーションでの観測を目指している宇宙線観測装置CALETのデータ収集システムについて、データ取り込みのためのトリガー生成方法などについての開発計画について報告した。
We have been developing CALET
(CALorimetric Electron Telescope) to make observations
of high energy electrons, gamma-rays, and nuclei
on the International Space Station (ISS). CALET
consists of an imaging calorimeter (IMC), a total
absorption calorimeter (TASC), a silicon array (SIA),
and an anti coincidence detector (ACD). Triggers
to start data acquisition of CAL are generated by
combining information on tracks in IMC, partial
shower energies in TASC, and traverse of charged
particles through ACD. Three trigger conditions can
be used simultaneously. The first one is for high
energy cosmic rays over 10 GeV. The second one is
for low energy electrons and protons affected by solar
activities between 1 GeV and 10 GeV. The third one is
for low energy gamma-rays from 20 MeV to 10 GeV.
CALET can detect gamma-ray bursts (GRBs) in a
wide energy range with a gamma-ray burst monitor
(GBM) and CAL. Data of sum of energy deposit in
TASC and event time are stored in ring memory for
a certain period even if the low energy gamma-ray
trigger is off.