研究者情報 | 神奈川大学

タムラ　タダヒサ Tamura Tadahisa 田村　忠久所属神奈川大学工学部応用物理学科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	Development of a High Dynamic Range Front-End Electronics for the Total Absorption Calorimeter of CALET
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/icrc0048.pdf
著者・共著者	Yusaku Katayose, Makio Shibata, Takayuki Asai, Masaki Go, Shoji Torii, Shunsuke Oazwa, Tadahisa Tamura, Kinya Hibino, Shoji Okuno, Hiroyuki Murakami, Yukio Uchihori, Hisashi Kitamura, Kenji Yoshidak and Shin Kubo
概要	ダイナミックレンジが10⁶におよぶ結晶シンチレータからの光を読み出すために、光検出器としてのシリコンフォトダイオードとそのフロントエンド回路についてテストした結果の報告。フロントエンド回路としては、4タイプについてノイズレベルとダイナミックレンジを調べた。 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 10⁶ MIPs 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 onsisted 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.