24 August 2017 Towards the development of a SiPM-based module for the camera of the Schwarzschild-Couder Telescope prototype of the Cherenkov Telescope Array
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Abstract
The Italian Institute of Nuclear Physics is currently involved in the development of a prototype for a camera based on Silicon Photomultipliers (SiPMs) for the Cherenkov Telescope Array (CTA), a new generation of telescopes for ground{based gamma{ray astronomy. In recent years, SiPMs have proven to be highly suitable devices for applications where high sensitivity to low{intensity light and fast responses are required. Among their many advantages are their low operational voltage when compared with classical photomultiplier tubes, mechanical robustness, and increased photo{detection efficiency (PDE). Moreover, due to the possibility of operating them during bright moonlight, SiPMs can therefore considerably increase telescope duty cycle.

Here we present a full characterization of a particular type of SiPM produced in Italy by the Fondazione Bruno Kessler, which is suitable for Cherenkov light detection in the Near-Ultraviolet (NUV). This device is a High{Density (HD) NUV SiPM, based on a micro cell of 40 μm × 40 μm and with an area of 6×6 mm2, providing low levels of dark noise and high PDE peaking in the NUV band. NUV-HD SiPMs will be arranged in a matrix of 8×8 single units to become part of the focal plane of the Schwarzschild-Couder Telescope prototype for CTA. An update on recent tests of the front-end electronics based on signal sampling with the TARGET-7 chip will be given as well.
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G. Ambrosi, G. Ambrosi, M. Ambrosio, M. Ambrosio, C. Aramo, C. Aramo, E. Bissaldi, E. Bissaldi, A. Boiano, A. Boiano, C. Bonavolontà, C. Bonavolontà, L. Di Venere, L. Di Venere, M. De Lucia, M. De Lucia, E. Fiandrini, E. Fiandrini, N. Giglietto, N. Giglietto, F. Giordano, F. Giordano, M. Ionica, M. Ionica, F. Licciulli, F. Licciulli, S. Loporchio, S. Loporchio, V. Masone, V. Masone, R. Paoletti, R. Paoletti, V. Postolache, V. Postolache, A. Rugliancich, A. Rugliancich, D. Simone, D. Simone, V. Vagelli, V. Vagelli, M. Valentino, M. Valentino, } "Towards the development of a SiPM-based module for the camera of the Schwarzschild-Couder Telescope prototype of the Cherenkov Telescope Array", Proc. SPIE 10392, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIX, 1039209 (24 August 2017); doi: 10.1117/12.2272982; https://doi.org/10.1117/12.2272982
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