Development of high dynamic range read-out system using multi-photodiode for the total absorption calorimeter of calet
Development of high dynamic range read-out system using multi-photodiode for the total absorption calorimeter of calet
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发表时间：
2007
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通讯作者：
Y. Katayose;M. Shibata;S. Torii;Y. Shimizu;T. Tamura;K. Hibino;S. Okuno;K. Yoshida;H. Kitamura;Y. Uchihori;H. Murakami
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作者：
Y. Katayose;M. Shibata;S. Torii;Y. Shimizu;T. Tamura;K. Hibino;S. Okuno;K. Yoshida;H. Kitamura;Y. Uchihori;H. Murakami
我们正在开发CALET(CALorimeter Electron Telescope)仪器的全吸收热量计(TASC)，用于观测国际空间站(ISS)上的高能电子和伽马射线。利用多光电二极管和模拟专用集成电路、16位ADC和现场可编程门阵列组成的前端电路，研制了一套测量TASC BGO棒中能量沉积的动态范围从1MIPs到10MIPs的读出系统。用宇宙线介子对1MIP的输出信号进行了标定。宇宙线介子产生BGO光产额的ADC计数平均值为10.8fC。在LED脉冲和重离子束作用下，确定了读出系统的动态范围为1MIPs~2400MIPs。
We are developing a total absorption calorimeter (TASC) of the CALET (CALorimetric Electron Telescope) instrument for observing high energy electrons and gamma rays on the ISS (International Space Station). A read-out system using a multi-photodiode and a front-end circuit including analog ASIC, 16 bit ADC and FPGA has been developed to measure the energy deposit with the dynamic range from 1MIPs(Minimum Ionization Particle) up to 10MIPs in a BGO bar of TASC. The output signal of 1 MIP was calibrated by cosmic-ray muon. The ADC count of light yield of BGO by a cosmic-ray muon was 10.8fC on average. The dynamic range of the read-out system was confirmed from 1MIPs to about 2400 MIPs with both of LED pulse and heavy ions beam.