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arXiv 1709.03078astro-ph.IM
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用于切伦科夫望远镜阵列的ASTRI

ASTRI for the Cherenkov Telescope Array

Maria Concetta Maccarone

摘要:

切伦科夫望远镜阵列(CTA)将是在甚高能伽马射线(20 GeV - 300 TeV)范围内运行的最大的地面天文台。它将以位于两个地点(北半球和南半球)的100多个望远镜为基础。南部CTA阵列的能量覆盖范围将扩展到数百TeV,这要归功于70台小型望远镜(SST),其主镜直径约为4米,视场约为9度。建议CTA SST阵列的首批前兆之一将由九台应科院望远镜代表。他们的原型,名为应科院SST-2 M,安装在意大利。它目前正在完成整体调试,然后进入科学验证阶段,将观测明亮的TeV源,如蟹状星云,Mrk 421和Mrk 501,并将原型性能与Monte Carlo预测进行交叉检查。应科院的望远镜采用双镜光学设计,以史瓦西-库德(SC)配置为基础。焦平面相机是弯曲的,以适应SC设计的理想处方和传感器是小尺寸的硅光电倍增器读出的快速前端电子。安装在意大利的望远镜原型由意大利国家天体物理研究所(INAF)开发,采用端到端的方法,包括从整个硬件和软件系统的设计、建造和实施到最终科学产品的所有方面。系统的所有部件均设计为符合CTA要求。目前,INAF正在与圣保罗大学(巴西)、西北大学(南非)和意大利国家核物理研究所(Italian National Institute for Nuclear Physics)合作,为CTA南部站点安装第一台应科院望远镜。

英文摘要:

The Cherenkov Telescope Array (CTA) will be the largest ground-based observatory operating in the very-high-energy gamma-ray (20 GeV - 300 TeV) range. It will be based on more than one hundred telescopes, located at two sites (northern and southern hemispheres). The energy coverage, in the southern CTA array, will extend up to hundreds of TeV thanks to 70 small size telescopes (SST), with primary mirrors of about 4 meters in diameter and large field of view of the order of 9 degrees. It is proposed that one of the first sets of precursors for the CTA SSTs array will be represented by nine ASTRI telescopes. Their prototype, named ASTRI SST-2M, is installed in Italy. It is currently completing the overall commissioning before entering the science verification phase that will performed observing bright TeV sources as Crab Nebula, Mrk421 and Mrk 501 cross-checking the prototype performance with the Monte Carlo predictions. ASTRI telescopes are characterized by a dual-mirror optical design based on the Schwarzschild- Couder (SC) configuration. The focal-plane camera is curved in order to fit the ideal prescription for the SC design and the sensors are small size silicon photomultipliers read-out by a fast front-end electronics. The telescope prototype installed in Italy, has been developed by the Italian National Institute for Astrophysics, INAF, following an end-to-end approach that comprises all aspects from the design, construction and implementation of the entire hardware and software system to the final scientific products. All parts of the system have been designed to comply with the CTA requirements. A collaborative effort, addressed to the implementation of the first ASTRI telescopes for the CTA southern site, is now on-going led by INAF with the Universidade de Sao Paulo (Brazil), the North-West University (South Africa) and the Italian National Institute for Nuclear Physics.

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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