TY - GEN
T1 - High-dynamic range readout system using dual APD/PD for the CALET-TASC
AU - Ito, Daijiro
AU - Katayose, Yusaku
AU - Mori, Kunishiro
AU - Murakami, Hiroyuki
AU - Ozawa, Shunsuke
AU - Shimizu, Yuki
AU - Torii, Shoji
AU - Ueyama, Yoshitaka
AU - Funahashi, Ryosuke
PY - 2011
Y1 - 2011
N2 - 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.
AB - 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.
KW - FEC
KW - ISS
KW - Large dynamic range
KW - Total absorption calorimeter
UR - http://www.scopus.com/inward/record.url?scp=84899525887&partnerID=8YFLogxK
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U2 - 10.7529/ICRC2011/V06/0824
DO - 10.7529/ICRC2011/V06/0824
M3 - Conference contribution
AN - SCOPUS:84899525887
VL - 6
SP - 375
EP - 378
BT - Proceedings of the 32nd International Cosmic Ray Conference, ICRC 2011
PB - Institute of High Energy Physics
T2 - 32nd International Cosmic Ray Conference, ICRC 2011
Y2 - 11 August 2011 through 18 August 2011
ER -