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arXiv · 1506.00264

Characterization and performance of the ASIC (CITIROC) front-end of the ASTRI camera

D. Impiombato·S. Giarrusso·T. Mineo·O. Catalano·C. Gargano·G. La Rosa·F. Russo·G. Sottile·S. Billotta·G. Bonanno·S. Garozzo·A. Grillo·D. Marano·G. Romeo
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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.

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D. Impiombato, S. Giarrusso, T. Mineo, O. Catalano, C. Gargano, G. La Rosa, F. Russo, G. Sottile, S. Billotta, G. Bonanno, S. Garozzo, A. Grillo, D. Marano, G. Romeo. 2015-05-31. Characterization and performance of the ASIC (CITIROC) front-end of the ASTRI camera. https://doi.org/10.1016/j.nima.2015.05.028

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