Mini-EUSO photodetector module data processing system
Mini-EUSO photodetector module data processing system
复制标题
Mini-EUSO光电探测器模块数据处理系统
DOI：
10.22323/1.301.0409
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
M. Mignone
中科院分区：
文献类型：
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作者：
P. Klimov;A. Belov;F. Capel;M. Bertaina;F. Fausti;M. Mignone
Mini-EUSO 是由 JEM-EUSO 合作开发的紫外望远镜，将放置在国际空间站 (ISS) 上，以宽视场 ($>$40$^\circ$) 和高时间分辨率 (2.5 $\mu$s) 测量紫外大气气辉和瞬态发光事件 (TLE)。 Mini-EUSO 旨在成为未来 JEM-EUSO 任务的太空合格探路者。探测器的光学系统由两个直径为25厘米的菲涅耳透镜组成。焦面由36个滨松多阳极光电倍增管（MAPMT）组成，每个像素有64个。所有 2304 个像素的输出信号都被数字化，然后传递到专门为实验开发的数据处理系统，该系统正在本工作中进行讨论。数据处理系统基于Xilinx生产的ZYNQ芯片，包含可编程部分（FPGA）和处理器。单芯片中的这种组合为处理从焦面收集的数据提供了巨大的优势，包括快速多级触发算法、数据缓冲、MAPMT高压控制算法、与前端电子设备和用于数据存储的单独中央处理器单元的接口。多级触发器是为 mini-EUSO 仪器开发的，用于在各种时间尺度（时间分辨率 $2.5 \mu$s、320 $\mu$s、40 ms）进行测量。该触发器已成功实施和测试。
Mini-EUSO is a UV telescope which is developed by the JEM-EUSO collaboration to be placed on board the International Space Station (ISS) to carry out measurements of UV atmosphere airglow and transient luminous events (TLEs) in a wide field of view ($>$40$^\circ$) and high temporal resolution (2.5 $\mu$s). Mini-EUSO is developed to be a space qualified pathfinder of future JEM-EUSO missions. Optical system of the detector consists of two Fresnel lenses of 25 cm diameter. The focal surface is composed of 36 produced by Hamamatsu multi anode photomultiplier tubes (MAPMT), each with 64 pixels. The output signal of all 2304 pixels is digitized and then passed to the data processing system that was specially developed for the experiment and is being discussed in this work. Data processing system is based on produced by Xilinx ZYNQ chip that contains both programmable part (FPGA) and processor. Such combination in a single chip gives a big advantage for processing a data gathered from focal surface including fast multi-level trigger algorithms, data buffering, MAPMTs high voltage control algorithms, interfaces with front-end electronics and with the separate central processor unit for data storage. The multi-level trigger was developed for the mini-EUSO instrument to perform measurements in various time scales (temporal resolutions $2.5 \mu$s, 320 $\mu$s, 40 ms). This trigger was successfully implemented and tested.