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arXiv 1909.01680astro-ph.IMastro-ph.HE
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EUSO-SPB2望远镜的数据处理机

The Data Processor of the EUSO-SPB2 Telescopes

Giuseppe Osteria, Valentina Scotti, Francesco Perfetto

摘要:

本文介绍了EUSO-SPB 2(Extreme Universe Space Observatory on a Super Pressure Balloon,Mission Two)望远镜的数据处理器(DP)。EUSO-SPB2是JEM-EUSO关于超长持续时间气球的科学计划的延续,始于EUSO-SPB1任务。EUSO-SPB2将搭载两台望远镜。一个是荧光望远镜,设计用于通过大气中簇射的紫外荧光发射来探测高能宇宙射线;另一个测量来自较低能量宇宙射线和其他光学背景的直接切伦科夫光发射,用于宇宙成因的τ中微子探测。DP是电子系统的组成部分,为两台望远镜中的每一台进行数据管理和仪器控制。DP控制前端电子设备,通过GPS系统用到达时间和有效载荷位置标记事件,为事件的时间同步提供信号,并测量望远镜的活时间和死时间。此外,它还管理用于数据存储的大容量存储器,并执行内务监控和控制通电和断电序列。由于超压气球可能在空中停留长达100天,因此对电子设备和数据处理的要求非常严格。DP在高海拔的非加压环境中运行,这对散热提出了技术挑战。在本文中,我们描述了系统的主要组成部分和设计开发的新任务。

英文摘要:

In this paper we present the Data Processor (DP) of EUSO-SPB2 (Extreme Universe Space Observatory on a Super Pressure Balloon, mission two) telescopes . The EUSO-SPB2 is the continuation of the JEM-EUSO science program on ultra-long duration balloons, started with the EUSO-SPB1 mission. The EUSO-SPB2 will host on-board two telescopes. One is a fluorescence telescope designed to detect high energy cosmic rays via the UV fluorescence emission of the showers in the atmosphere; the other one measures direct Cherenkov light emission from lower energy cosmic rays and other optical backgrounds for cosmogenic tau neutrino detection. The DP is the component of the electronics system which performs data management and instrument control for each of the two telescopes. The DP controls front-end electronics, tags events with arrival time and payload position through a GPS system, provides signals for time synchronization of the event and measures live and dead time of the telescope. Furthermore it manages mass memory for data storage and performs housekeeping monitor and controls the power on and power off sequences. Since a super pressure balloon may remain airborne up to 100 days, the requirements on the electronics and data handling are quite severe. The DP operates at high altitude in unpressurised environment which represents a technological challenge for heat dissipation. In this paper we describe the main components of the system and the design developed for the new mission.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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