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|Title:||Characterization and performance of the ASIC (CITIROC) front-end of the ASTRI camera||Authors:||Impiombato, D.
LA ROSA, GIOVANNI
BILLOTTA, SERGIO GUIDO MICHELE
|Issue Date:||2015||Journal:||NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT||Number:||794||First Page:||185||Abstract:||The Cherenkov Imaging Telescope Integrated Read Out Chip, CITIROC, is a chip adopted as the front-end of the camera at the focal plane of the imaging Cherenkov ASTRI dual-mirror small size telescope (ASTRI SST-2M) prototype. This paper presents the results of the measurements performed to characterize CITIROC tailored for the ASTRI SST-2M focal plane requirements. In particular, we investigated the trigger linearity and efficiency, as a function of the pulse amplitude. Moreover, we tested its response by performing a set of measurements using a silicon photomultiplier (SiPM) in dark conditions and under light pulse illumination. The CITIROC output signal is found to vary linearly as a function of the input pulse amplitude. Our results show that it is suitable for the ASTRI SST-2M camera. <P />||Acknowledgments:||Acknowledgments The work presented in this paper was supported in part by the ASTRI, Flagship Project financed by the Italian Ministry of Education, University, and Research (MIUR) and led by the Italian National Institute for Astrophysics (INAF) . We also acknowledge partial support from MIUR Bando PRIN 2009 and TeChe.it 2014 Special Grants. We are deeply grateful to S. Callier, C. De La Taille, J. Fleury and L. Raux within WEEROC at Orsay and to the ASTRI Collaborators for useful discussions and suggestions. D.I., S.G., T.M. and O.C. thank M. Fiorini, E. Giro, M.C. Maccarone, S. Vercellone and S. Wakley for their contributions as internal referees of the paper.||URI:||http://hdl.handle.net/20.500.12386/23625||URL:||https://www.sciencedirect.com/science/article/pii/S0168900215006609?via%3Dihub||ISSN:||0168-9002||DOI:||10.1016/j.nima.2015.05.028||Bibcode ADS:||2015NIMPA.794..185I||Fulltext:||open|
|Appears in Collections:||1.01 Articoli in rivista|
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