High-dynamic range readout system using dual APD/PD for the CALET-TASC

Daijiro Ito*, Yusaku Katayose, Kunishiro Mori, Hiroyuki Murakami, Shunsuke Ozawa, Yuki Shimizu, Shoji Torii, Yoshitaka Ueyama, Ryosuke Funahashi


研究成果: Conference contribution

3 被引用数 (Scopus)


The CALET (CALorimetric Electron Telescope) instrument is under development to observe cosmic-ray electrons, gamma-rays, and nuclei on the International Space Station (ISS). Total absorption calorimeter (TASC) of the CALET is adopted to image the development of shower particles with a stack of lead tungstenate (PWO) scintillators. Since it is necessary to measure in very high dynamic range, from a minimum ionization particle (MIP) to 106 shower particles, we developed a front-end circuit (FEC) which has a dynamic range of 7 orders of magnitude. Scintillation photons from PWO are read out by hybrid packages of Si avalanche photodiode and Si photo diodes (Dual APD/PD). Signals from each photodiode are amplified by a charge sensitive amplifier (CSA) with a high dynamic range of 4 orders of magnitude. Two amplifier circuits with different gains are provided for signal processing with each CSA. We will report on the basic performance of the FEC of CALET-TASC, especially the Dual APD/PD, hybrid integrated circuit (HIC) for the CSA, and the pulse shaping and main amplifier.

ホスト出版物のタイトルProceedings of the 32nd International Cosmic Ray Conference, ICRC 2011
出版社Institute of High Energy Physics
出版ステータスPublished - 2011
イベント32nd International Cosmic Ray Conference, ICRC 2011 - Beijing
継続期間: 2011 8月 112011 8月 18


Other32nd International Cosmic Ray Conference, ICRC 2011

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学


「High-dynamic range readout system using dual APD/PD for the CALET-TASC」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。