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arXiv 1909.01969astro-ph.IMastro-ph.HEhep-ex
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NectarCAM --CTA中型望远镜用照相机的状态和性能结果

Status and performance results from NectarCAM -- a camera for CTA medium sized telescopes

Thomas Tavernier, Jean-François Glicenstein, François Brun

摘要:

切伦科夫望远镜阵列(CTA)将是第一个伽马射线天文学地面观测站。随着一百多个第四代成像大气切伦科夫望远镜(IACT)分布在两个大阵列中,CTA将达到前所未有的灵敏度,角分辨率和光谱覆盖范围。需要三类IACT- 40个中型望远镜(MST),8个大型望远镜(LST)和70个小型望远镜(SST)-来覆盖整个CTA能量范围(20 GeV至300 TeV)。NectarCAM是一台切伦科夫相机,设计用于配备CTA的中型望远镜,覆盖中心能量范围从100 GeV到30 TeV,视场为8度。它基于模块化设计,数据通道使用NECTAr芯片,该芯片配备GHz采样开关电容阵列和12位模数转换器(ADC)。相机将包括265个模块,每个模块由7个光电倍增管(PMT)和一个前端板组成,执行数据捕获,在触发决定后以高达10 kHz的速率通过以太网发送数据。本文概述了目前正在CEA Paris-Saclay(法国)集成的第一台NectarCAM相机的状态。此外,我们将讨论的校准策略和目前的性能结果,从CEA巴黎-萨克雷测试台,并从第一个数据下采取的一个真正的天空原型的中型望远镜(MST)的结构在Adlershof(德国)。

英文摘要:

The Cherenkov Telescope Array (CTA) will be the first ground-based observatory for gamma-ray astronomy. With more than a hundred of 4th generation of Imaging Atmospheric Cherenkov Telescopes (IACTs) distributed in two large arrays, CTA will reach unprecedented sensitivity, angular resolution, and spectral coverage. Three classes of IACTs -- 40 Medium-Sized Telescopes (MSTs), 8 Large-Sized Telescopes (LSTs) and 70 Small-Sized Telescopes (SSTs) -- are required to cover the full CTA energy range (20 GeV to 300 TeV). NectarCAM is a Cherenkov camera which is designed to equip medium sized telescopes of CTA, covering the central energy range from 100 GeV to 30 TeV, with a field of view of 8 degrees. It is based on a modular design with data channels using the NECTAr chip, which is equipped with both GHz sampling Switched Capacitor Array and 12-bit Analog to Digital Converter (ADC). The camera will comprise 265 modules, each consisting of 7 photomultiplier Tubes (PMTs) and a Front-End Board performing the data capture, sending the data over the Ethernet after the trigger decision at rates up to 10 kHz. This contribution provides an overview of the status of the first NectarCAM camera currently under integration in CEA Paris-Saclay (France). Furthermore, we will discuss the calibration strategies and present performance results from the CEA Paris-Saclay test bench and from the first data taken under a real sky on the prototype of medium sized telescope (MST) structure in Adlershof (Germany).

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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