Author/Authors :
Impiombato، نويسنده , , D. and Giarrusso، نويسنده , , S. and Mineo، نويسنده , , T. and Belluso، نويسنده , , M. and Billotta، نويسنده , , S. and Bonanno، نويسنده , , G. and Catalano، نويسنده , , O. and Grillo، نويسنده , , A. and La Rosa، نويسنده , , G. C. Marano، نويسنده , , D. and Sottile، نويسنده , , G.، نويسنده ,
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.
