Development of the optical system for the SST-1M telescope of the Cherenkov Telescope Array observatory

K. Seweryn; W. Bilnik; J. Błocki; L. Bogacz; T. Bulik; F. Cadoux; A. Christov; M. Chruślińska; M. Curyło; D. della Volpe; M. Dyrda; Y. Favre; A. Frankowski; Ł. Grudnik; M. Grudzińska; M. Heller; B. Idźkowski; M. Jamrozy; M. Janiak; J. Kasperek; K. Lalik; E. Lyard; E. Mach; D. Mandat; A. Marszałek; J. Michałowski; R. Moderski; T. Montaruli; A. Neronov; J. Niemiec; M. Ostrowski; P. Paśko; M. Pech; A. Porcelli; E. Prandini; E. Pueschel; P. Rajda; M. Rameez; P. Rozwadowski; E. jr Schioppa; P. Schovanek; K. Skowron; V. Sliusar; M. Sowiński; Ł. Stawarz; M. Stodulska; M. Stodulski; S. Toscano; I. Troyano Pujadas; R. Walter; M. Wiȩcek; A. Zagdański; K. Ziȩtara; P. Żychowski; T. Barciński; M. Karczewski; J. Nicolau Kukliński; Ł. Płatos; M. Rataj; P. Wawer; R. Wawrzaszek

arXiv · 1508.06795

Development of the optical system for the SST-1M telescope of the Cherenkov Telescope Array observatory

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Abstract

The prototype of a Davies-Cotton small size telescope (SST-1M) has been designed and developed by a consortium of Polish and Swiss institutions and proposed for the Cherenkov Telescope Array (CTA) observatory. The main purpose of the optical system is to focus the Cherenkov light emitted by extensive air showers in the atmosphere onto the focal plane detectors. The main component of the system is a dish consisting of 18 hexagonal mirrors with a total effective collection area of 6.47 m2 (including the shadowing and estimated mirror reflectivity). Such a solution was chosen taking into account the analysis of the Cherenkov light propagation and based on optical simulations. The proper curvature and stability of the dish is ensured by the mirror alignment system and the isostatic interface to the telescope structure. Here we present the design of the optical subsystem together with the performance measurements of its components.

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K. Seweryn, W. Bilnik, J. Błocki, L. Bogacz, T. Bulik, F. Cadoux, A. Christov, M. Chruślińska, M. Curyło, D. della Volpe, M. Dyrda, Y. Favre, A. Frankowski, Ł. Grudnik, M. Grudzińska, M. Heller, B. Idźkowski, M. Jamrozy, M. Janiak, J. Kasperek, K. Lalik, E. Lyard, E. Mach, D. Mandat, A. Marszałek, J. Michałowski, R. Moderski, T. Montaruli, A. Neronov, J. Niemiec, M. Ostrowski, P. Paśko, M. Pech, A. Porcelli, E. Prandini, E. Pueschel, P. Rajda, M. Rameez, P. Rozwadowski, E. jr Schioppa, P. Schovanek, K. Skowron, V. Sliusar, M. Sowiński, Ł. Stawarz, M. Stodulska, M. Stodulski, S. Toscano, I. Troyano Pujadas, R. Walter, M. Wiȩcek, A. Zagdański, K. Ziȩtara, P. Żychowski, T. Barciński, M. Karczewski, J. Nicolau Kukliński, Ł. Płatos, M. Rataj, P. Wawer, R. Wawrzaszek. 2015-08-27. Development of the optical system for the SST-1M telescope of the Cherenkov Telescope Array observatory. https://arxiv.org/abs/1508.06795

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