Characterization of EASIROC as Front-End for the readout of the SiPM at the focal plane of the Cherenkov telescope ASTRI

D. Impiombato; S. Giarrusso; T. Mineo; M. Belluso; S. Billotta; G. Bonanno; O. Catalano; A. Grillo; G. La Rosa; D. Marano; G. Sottile

doi:10.1016/j.nima.2013.07.029

arXiv · 1309.7083

Characterization of EASIROC as Front-End for the readout of the SiPM at the focal plane of the Cherenkov telescope ASTRI

D. Impiombato·S. Giarrusso·T. Mineo·M. Belluso·S. Billotta·G. Bonanno·O. Catalano·A. Grillo·G. La Rosa·D. Marano·G. Sottile

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Abstract

The Extended Analogue Silicon Photo-multiplier Integrated Read Out Chip, EASIROC, is a chip proposed as front-end of the camera at the focal plane of the imaging Cherenkov ASTRI SST-2M telescope prototype. This paper presents the results of the measurements performed to characterize EASIROC in order to evaluate its compliance with the ASTRI SST-2M focal plane requirements. In particular, we investigated the trigger time walk and the jitter effects as a function of the pulse amplitude. The EASIROC output signal is found to vary linearly as a function of the input pulse amplitude with very low level of electronic noise and cross-talk (<1%). Our results show that it is suitable as front-end chip for the camera prototype, although, specific modifications are necessary to adopt the device in the final version of the telescope.

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D. Impiombato, S. Giarrusso, T. Mineo, M. Belluso, S. Billotta, G. Bonanno, O. Catalano, A. Grillo, G. La Rosa, D. Marano, G. Sottile. 2013-09-26. Characterization of EASIROC as Front-End for the readout of the SiPM at the focal plane of the Cherenkov telescope ASTRI. https://doi.org/10.1016/j.nima.2013.07.029

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