TY - CONF
T1 - Development of a high dynamic range front-end electronics for the total absorption calorimeter of CALET
AU - Katayose, Yusaku
AU - Shibata, Makio
AU - Asai, Takayuki
AU - Go, Masaki
AU - Torii, Shoji
AU - Oazwa, Shunsuke
AU - Tamura, Tadahisa
AU - Hibino, Kinya
AU - Okuno, Shoji
AU - Murakami, Hiroyuki
AU - Uchihori, Yukio
AU - Kitamura, Hisashi
AU - Yoshida, Kenji
AU - Kubo, Shin
PY - 2009/1/1
Y1 - 2009/1/1
N2 - Read-out systems using Si photodiodes and front-end circuits(FEC) were studied in order to measure the energy deposit with a dynamic range from 1MIP(minimum ionization particle) to 106MIPs in a crystal scintillator bar of the total absorption calorimeter (TASC) of the CALET (CALorimetric Electron Telescope) instrument. Four types of FEC were investigated for the photodiode read out. Two of them were A225(AMP-TEK), which consisted of a hybrid charge sensitive preamplifier and a shaping amplifier, and MPX-08 (NOVA), which is a charge-integrating chip. It was confirmed that the A225 had a resolution of approximately 0.31 fC and a maximum range of approximately 2 pC. A new hybrid integrated circuit(IC) is being developed to measure the light yield of a scintillator with a dynamic range of seven orders by using two photodiodes. This FEC consists of two preamplifiers that have a different gain. The performance of a high-gain preamplifier was evaluated. The resolution is approximately 0.5 fC and the maximum range is more than 25 pC. A new application specified integrated circuit(ASIC), which has a high dynamic range of four orders, is being developed. This ASIC consists of one preamplifier circuit and two shaping circuits that have a different gain. The prototype IC was designed using the 0.5-μm BiCMOS process. The outline of read-out systems using each type of FEC and the state of the development of each system are described below.
AB - Read-out systems using Si photodiodes and front-end circuits(FEC) were studied in order to measure the energy deposit with a dynamic range from 1MIP(minimum ionization particle) to 106MIPs in a crystal scintillator bar of the total absorption calorimeter (TASC) of the CALET (CALorimetric Electron Telescope) instrument. Four types of FEC were investigated for the photodiode read out. Two of them were A225(AMP-TEK), which consisted of a hybrid charge sensitive preamplifier and a shaping amplifier, and MPX-08 (NOVA), which is a charge-integrating chip. It was confirmed that the A225 had a resolution of approximately 0.31 fC and a maximum range of approximately 2 pC. A new hybrid integrated circuit(IC) is being developed to measure the light yield of a scintillator with a dynamic range of seven orders by using two photodiodes. This FEC consists of two preamplifiers that have a different gain. The performance of a high-gain preamplifier was evaluated. The resolution is approximately 0.5 fC and the maximum range is more than 25 pC. A new application specified integrated circuit(ASIC), which has a high dynamic range of four orders, is being developed. This ASIC consists of one preamplifier circuit and two shaping circuits that have a different gain. The prototype IC was designed using the 0.5-μm BiCMOS process. The outline of read-out systems using each type of FEC and the state of the development of each system are described below.
KW - CALET
KW - Front-end circuit
KW - Total absorption calorimeter
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M3 - Paper
AN - SCOPUS:84899118657
T2 - 31st International Cosmic Ray Conference, ICRC 2009
Y2 - 7 July 2009 through 15 July 2009
ER -