4 August 2014 The ASTRI SST-2M prototype for the next generation of Cherenkov telescopes: a single framework approach from requirement analysis to integration and verification strategy definition
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Abstract
ASTRI is a flagship project of the Italian Ministry of Education, University and Research, which aims to develop an endto- end prototype of one of the three types of telescopes to be part of the Cherenkov Telescope Array (CTA), an observatory which will be the main representative of the next generation of Imaging Atmospheric Cherenkov Telescopes. The ASTRI project, led by the Italian National Institute of Astrophysics (INAF), has proposed an original design for the Small Size Telescope, which is aimed to explore the uppermost end of the Very High Energy domain up to about few hundreds of TeV with unprecedented sensitivity, angular resolution and imaging quality. It is characterized by challenging and innovative technological solutions which will be adopted for the first time in a Cherenkov telescope: a dual-mirror Schwarzschild-Couder configuration, a modular, light and compact camera based on silicon photomultipliers, and a front-end electronic based on a specifically designed ASIC. The end-to-end project is also including all the data-analysis software and the data archive. In this paper we describe the process followed to derive the ASTRI specifications from the CTA general requirements, a process which had to take into proper account the impact on the telescope design of the different types of the CTA requirements (performance, environment, reliability-availability-maintenance, etc.). We also describe the strategy adopted to perform the specification verification, which will be based on different methods (inspection, analysis, certification, and test) in order to demonstrate the telescope compliance with the CTA requirements. Finally we describe the integration planning of the prototype assemblies (structure, mirrors, camera, control software, auxiliary items) and the test planning of the end-to-end telescope. The approach followed by the ASTRI project is to have all the information needed to report the verification process along all project stages in a single layer. From this unique layer it is possible to, in a semi-automatic way, generate updated project documentation and progress report.
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Mauro Fiorini, Mauro Fiorini, Nicola La Palombara, Nicola La Palombara, Luca Stringhetti, Luca Stringhetti, Rodolfo Canestrari, Rodolfo Canestrari, Osvaldo Catalano, Osvaldo Catalano, Enrico Giro, Enrico Giro, Giuseppe Leto, Giuseppe Leto, Maria Concetta Maccarone, Maria Concetta Maccarone, Giovanni Pareschi, Giovanni Pareschi, Gino Tosti, Gino Tosti, Stefano Vercellone, Stefano Vercellone, } "The ASTRI SST-2M prototype for the next generation of Cherenkov telescopes: a single framework approach from requirement analysis to integration and verification strategy definition", Proc. SPIE 9150, Modeling, Systems Engineering, and Project Management for Astronomy VI, 915024 (4 August 2014); doi: 10.1117/12.2054865; https://doi.org/10.1117/12.2054865
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