First light on a new fully digital camera based on SiPM for CTA SST-1M telescope

Domenico della Volpe; Imen Al Samarai; Cyril Alispach; Tomasz Bulik; Jerzy Borkowski; Franck Cadoux; Victor Coco; Yannick Favre; Mira Grudzińska; Matthieu Heller; Marek Jamrozy; Jerzy Kasperek; Etienne Lyard; Emil Mach; Dusan Mandat; Jerzy Michałowski; Rafal Moderski; Teresa Montaruli; Andrii Neronov; Jacek Niemiec; T. R. S. Njoh Ekoume; Michal Ostrowski; Paweł Paśko; Miroslav Pech; Pawel Rajda; Jakub Rafalski; Petr Schovanek; Karol Seweryn; Krzysztof Skowron; Vitalii Sliusar; Łukasz Stawarz; Magdalena Stodulska; Marek Stodulski; Petr Travnicek; Isaac Troyano Pujadas; Roland Walter; Adam Zagdański; Krzysztof Zietara

doi:10.1117/12.2272601

29 August 2017 First light on a new fully digital camera based on SiPM for CTA SST-1M telescope

Domenico della Volpe, Imen Al Samarai, Cyril Alispach, Tomasz Bulik, Jerzy Borkowski, Franck Cadoux, Victor Coco, Yannick Favre, Mira Grudzińska, Matthieu Heller, Marek Jamrozy, Jerzy Kasperek, Etienne Lyard, Emil Mach, Dusan Mandat, Jerzy Michałowski, Rafal Moderski, Teresa Montaruli, Andrii Neronov, Jacek Niemiec, T. R. S. Njoh Ekoume, Michal Ostrowski, Paweł Paśko, Miroslav Pech, Pawel Rajda, Jakub Rafalski, Petr Schovanek, Karol Seweryn, Krzysztof Skowron, Vitalii Sliusar, Łukasz Stawarz, Magdalena Stodulska, Marek Stodulski, Petr Travnicek, Isaac Troyano Pujadas, Roland Walter, Adam Zagdański, Krzysztof Zietara

Author Affiliations +

Proceedings Volume 10399, Optics for EUV, X-Ray, and Gamma-Ray Astronomy VIII; 1039906 (2017) https://doi.org/10.1117/12.2272601
Event: SPIE Optical Engineering + Applications, 2017, San Diego, California, United States

Abstract

The Cherenkov Telescope Array (CTA) will explore with unprecedented precision the Universe in the gammaray domain covering an energy range from 50 GeV to more the 300 TeV. To cover such a broad range with a sensitivity which will be ten time better than actual instruments, different types of telescopes are needed: the Large Size Telescopes (LSTs), with a ∼24 m diameter mirror, a Medium Size Telescopes (MSTs), with a ∼12 m mirror and the small size telescopes (SSTs), with a ∼4 m diameter mirror. The single mirror small size telescope (SST-1M), one of the proposed solutions to become part of the small-size telescopes of CTA, will be equipped with an innovative camera. The SST-1M has a Davies-Cotton optical design with a mirror dish of 4 m diameter and focal ratio 1.4 focussing the Cherenkov light produced in atmospheric showers onto a 90 cm wide hexagonal camera providing a FoV of 9 degrees. The camera is an innovative design based on silicon photomultipliers (SiPM ) and adopting a fully digital trigger and readout architecture. The camera features 1296 custom designed large area hexagonal SiPM coupled to hollow optical concentrators to achieve a pixel size of almost 2.4 cm. The SiPM is a custom design developed with Hamamatsu and with its active area of almost 1 cm² is one of the largest monolithic SiPM existing. Also the optical concentrators are innovative being light funnels made of a polycarbonate substrate coated with a custom designed UV-enhancing coating. The analog signals coming from the SiPM are fed into the fully digital readout electronics, where digital data are processed by high-speed FPGAs both for trigger and readout. The trigger logic, implemented into an Virtex 7 FPGA, uses the digital data to elaborate a trigger decision by matching data against predefined patterns. This approach is extremely flexible and allows improvements and continued evolutions of the system. The prototype camera is being tested in laboratory prior to its installation expected in fall 2017 on the telescope prototype in Krakow (Poland). In this contribution, we will describe the design of the camera and show the performance measured in laboratory.

Citation Download Citation

Domenico della Volpe, Imen Al Samarai, Cyril Alispach, Tomasz Bulik, Jerzy Borkowski, Franck Cadoux, Victor Coco, Yannick Favre, Mira Grudzińska, Matthieu Heller, Marek Jamrozy, Jerzy Kasperek, Etienne Lyard, Emil Mach, Dusan Mandat, Jerzy Michałowski, Rafal Moderski, Teresa Montaruli, Andrii Neronov, Jacek Niemiec, T. R. S. Njoh Ekoume, Michal Ostrowski, Paweł Paśko, Miroslav Pech, Pawel Rajda, Jakub Rafalski, Petr Schovanek, Karol Seweryn, Krzysztof Skowron, Vitalii Sliusar, Łukasz Stawarz, Magdalena Stodulska, Marek Stodulski, Petr Travnicek, Isaac Troyano Pujadas, Roland Walter, Adam Zagdański, and Krzysztof Zietara "First light on a new fully digital camera based on SiPM for CTA SST-1M telescope", Proc. SPIE 10399, Optics for EUV, X-Ray, and Gamma-Ray Astronomy VIII, 1039906 (29 August 2017); https://doi.org/10.1117/12.2272601

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
14 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Atmospheric Cherenkov telescopes

Telescopes

Cameras

Atmospheric optics

Digital electronics

Electronics

Field programmable gate arrays

Show All Keywords

Keywords/Phrases

Search In:

Publication Years