Front-end and slow control electronics for large area SiPMs used for the single mirror Small Size Telescope (SST-1M) of the Cherenkov Telescope Array (CTA)

J. A. Aguilar; W. Bilnik; J. Borkowski; F. Cadoux; A. Christov; D. della Volpe; Y. Favre; M. Heller; J. Kasperek; E. Lyard; A. Marszalek; R. Moderski; T. Montaruli; A. Porcelli; E. Prandini; P. Rajda; M. Rameez; E. jr. Schioppa; I. Troyano Pujadas; K. Ziętara; J. Blocki; L. Bogacz; T. Bulik; M. Curyło; M. Dyrda; A. Frankowski; Ł. Grudniki; M. Grudzinska; B. Idźkowski; M. Jamrozy; M. Janiak; K. Lalik; E. Mach; D. Mandat; J. Michalowski; A. Neronov; J. Niemiec; M. Ostrowski; P. Paśko; M. Pech; P. Schovanek; K. Seweryn; K. Skowron; V. Sliusar; M. Sowinski; Ł. Stawarz; M. Stodulska; M. Stodulski; S. Toscano; R. Walter; M. Więcek; A. Zagdański; P. Żychowski

doi:10.1117/12.2232982

27 July 2016 Front-end and slow control electronics for large area SiPMs used for the single mirror Small Size Telescope (SST-1M) of the Cherenkov Telescope Array (CTA)

J. A. Aguilar, W. Bilnik, J. Borkowski, F. Cadoux, A. Christov, D. della Volpe, Y. Favre, M. Heller, J. Kasperek, E. Lyard, A. Marszalek, R. Moderski, T. Montaruli, A. Porcelli, E. Prandini, P. Rajda, M. Rameez, E. jr. Schioppa, I. Troyano Pujadas, K. Ziętara, J. Blocki, L. Bogacz, T. Bulik, M. Curyło, M. Dyrda, A. Frankowski, Ł. Grudniki, M. Grudzinska, B. Idźkowski, M. Jamrozy, M. Janiak, K. Lalik, E. Mach, D. Mandat, J. Michalowski, A. Neronov, J. Niemiec, M. Ostrowski, P. Paśko, M. Pech, P. Schovanek, K. Seweryn, K. Skowron, V. Sliusar, M. Sowinski, Ł. Stawarz, M. Stodulska, M. Stodulski, S. Toscano, R. Walter, M. Więcek, A. Zagdański, P. Żychowski

Author Affiliations +

Proceedings Volume 9915, High Energy, Optical, and Infrared Detectors for Astronomy VII; 99152T (2016) https://doi.org/10.1117/12.2232982
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

Abstract

The single mirror Small Size Telescope (SST-1M) project proposes a design among others for the smallest type of telescopes (SST), that will compose the south observatory of the Cherenkov Telescope Array (CTA). The SST camera collecting the Cherenkov light resulting from very high energy gamma-ray interactions in the atmosphere proposes to use Silicon PhotoMultipliers (SiPM). The SST-1M design has led to the use of unique pixel shape and size that required a dedicated development by the University of Geneva and Hamamatsu. An active surface of ~94 mm² and a resulting total capacitance of ~3.4 nF combined with the stringent requirements of the CTA project on timing and charge resolution have led the University of Geneva to develop a custom preamplifier stage and slow-control system. The design and performance of the tailor made preamplifier stage and of the slow control electronics will be briefly described. The bias circuit of the sensor contains a resistor meant to prevent the sensor from drawing high current. However this resistor also introduces a voltage drop at the sensor input impacting the stability of its operation. A model has been developed in order to derive the parameters needed to account for it at the data analysis level. A solution based on the SST-1M front-end and digital readout is proposed to compensate for the voltage drop at the sensor cathode.

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J. A. Aguilar, W. Bilnik, J. Borkowski, F. Cadoux, A. Christov, D. della Volpe, Y. Favre, M. Heller, J. Kasperek, E. Lyard, A. Marszalek, R. Moderski, T. Montaruli, A. Porcelli, E. Prandini, P. Rajda, M. Rameez, E. jr. Schioppa, I. Troyano Pujadas, K. Ziętara, J. Blocki, L. Bogacz, T. Bulik, M. Curyło, M. Dyrda, A. Frankowski, Ł. Grudniki, M. Grudzinska, B. Idźkowski, M. Jamrozy, M. Janiak, K. Lalik, E. Mach, D. Mandat, J. Michalowski, A. Neronov, J. Niemiec, M. Ostrowski, P. Paśko, M. Pech, P. Schovanek, K. Seweryn, K. Skowron, V. Sliusar, M. Sowinski, Ł. Stawarz, M. Stodulska, M. Stodulski, S. Toscano, R. Walter, M. Więcek, A. Zagdański, and P. Żychowski "Front-end and slow control electronics for large area SiPMs used for the single mirror Small Size Telescope (SST-1M) of the Cherenkov Telescope Array (CTA)", Proc. SPIE 9915, High Energy, Optical, and Infrared Detectors for Astronomy VII, 99152T (27 July 2016); https://doi.org/10.1117/12.2232982

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