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arXiv 2108.07526astro-ph.IMphysics.ins-det
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用于超快天文学的SiPM光子计数读出系统

A SiPM photon-counting readout system for Ultra-Fast Astronomy

Albert Wai Kit Lau, Yan Yan Chan, Mehdi Shafiee, George F. Smoot, Bruce Grossan

摘要:

很少有工作已经做了搜索在毫秒到纳秒制度的天体物理瞬态光发射具有显着的灵敏度。我们称之为“超快天文学”,或UFA。为了在尽可能短的时间尺度上调查瞬态,我们开发了我们自己定制的读出系统的硅光电倍增器(SiPM)为基础的UFA相机,用于传统的天文望远镜。SiPM,可在阵列封装成像领域,能够在可见光波长范围内的时间标记的单光子检测。我们的读出系统由16个通道的14位数据记录。每个通道包括一个50 dB增益前置放大器、信号整形电路、模拟前端、模数转换器和一个用于数据记录的Xilinx UltraScale+现场可编程门阵列多用途片上系统(FPGA-MPSoC)板。我们表明,我们的系统成功地读出的数据从SiPM在16 ns的时间间隔,每通道的最大功耗为300 mW,并能够执行并发16通道读出。

英文摘要:

Very little work has been done searching for astrophysical transient optical emission in the millisecond to nanosecond regime with significant sensitivity. We call this regime "Ultra-Fast Astronomy", or UFA. To investigate transients on as short time scales as possible, we developed our own customized readout system for a silicon photomultiplier (SiPM)-based UFA camera, intended for use on conventional astronomical telescopes. SiPMs, available in array packages for imaging a field, are capable of time-tagged single-photon detection in the visible wavelength range. Our readout system consists of 16 channels of 14-bit data logging. Each channel includes a 50-dB gain pre-amplifier, signal shaping circuits, an analogue front end, an analogue to digital converter, and a Xilinx UltraScale+ Field Programable Gate Array Multipurpose System on Chip (FPGA-MPSoC)board for data-logging. We show that our system successfully read out the data from SiPM at 16 ns intervals with a maximum power consumption of 300 mW per channel and capability to perform concurrent 16 channels readout.

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