The HESS central data acquisition system

被引：17
作者：
Balzer, A. [1 ,2 ]
Fuessling, M. [2 ]
Gajdus, M. [3 ]
Goering, D. [4 ]
Lopatin, A. [2 ]
de Naurois, M. [5 ]
Schlenker, S. [6 ]
Schwanke, U. [3 ]
Stegmann, C. [1 ,2 ]
机构：
[1] DESY, D-15738 Zeuthen, Germany
[2] Univ Potsdam, Inst Phys & Astron, D-14476 Potsdam, Germany
[3] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany
[4] Univ Erlangen Nurnberg, Inst Phys, D-91058 Erlangen, Germany
[5] IN2P3, CNRS, Lab Leprince Ringuet, F-91128 Palaiseau, France
[6] CERN, CH-1211 Geneva 23, Switzerland
来源：
ASTROPARTICLE PHYSICS | 2014年 / 54卷
基金：
新加坡国家研究基金会; 英国科学技术设施理事会;
关键词：
DAQ; Data acquisition; VHE; Gamma ray astronomy; HESS;
D O I：
10.1016/j.astropartphys.2013.11.007
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The High Energy Stereoscopic System (H.E.S.S.) is a system of Imaging Atmospheric Cherenkov Telescopes (IACTs) located in the Khomas Highland in Namibia. It measures cosmic gamma rays of very high energies (VHE; >100 GeV) using the Earth's atmosphere as a calorimeter. The H.E.S.S. Array entered Phase II in September 2012 with the inauguration of a fifth telescope that is larger and more complex than the other four. This paper will give an overview of the current H.E.S.S. central data acquisition (DAQ) system with particular emphasis on the upgrades made to integrate the fifth telescope into the array. At first, the various requirements for the central DAQ are discussed then the general design principles employed to fulfil these requirements are described. Finally, the performance, stability and reliability of the H.E.S.S. central DAQ are presented. One of the major accomplishments is that less than 0.8% of observation time has been lost due to central DAQ problems since 2009. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：67 / 80
页数：14
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