Sunday, May 19, 2013

1305.3661 (Xu Zhou et al.)

Design and implementation of the NaI (Tl)CsI (Na) detectors output
signal generator

Xu Zhou, Cong-Zhan Liu, Jian-Ling Zhao, Fei Zhang, Yi-Fei Zhang, Zheng-Wei Li, Shuo Zhang, Xu-Fang Li, Xue-Feng Lu, Zhen-Ling Xu, Fang-Jun Lu
We designed and implemented a signal generator that can simulate the output of the NaI (Tl)CsI (Na) detectors pre amplifier onboard the Hard X ray Modulation Telescope (HXMT). Using the development of FPGA (Field Programmable Gate Array) with VHDL language and adding random constituent, we have finally produced the double exponential random pulse signal generator. The statistical distribution of signal amplitude is programmable. The occurrence time intervals of adjacent signals content negative exponential distribution statistically.
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