A Novel Camera Type for Very High Energy Gamma-Astronomy

Quirin Weitzel,Dorothée Hildebrand,Michael Backes,Adrian Biland,Andrea Boller, Isabel Braun,Thomas Bretz,Sebastian Commichau, Volker Commichau,Daniela Dorner, Hanspeter von Gunten, Adamo Gendotti,Oliver Grimm,Urs Horisberger,Thomas Krähenbühl, Daniel Kranich,Eckart Lorenz,Werner Lustermann,Karl Mannheim,Dominik Neise,Felicitas Pauss,Dieter Renker,Wolfgang Rhode,Michael Rissi,Sebastian Rollke, Ulf Röser,Luisa Sabrina Stark,Jean-Pierre Stucki, Gert Viertel, Patrick Vogler

semanticscholar（2009）

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摘要

Geiger-mode avalanche photodiodes (G-APD) are promising new sensors for light detection in Cherenkov telescopes. This paper presents the realization of a small-size module employing 144 G-APDs, serving as a prototype for a larger camera. Dedicated front-end electronics have been developed for signal summation and amplification. The data acquisition system is based on the Domino Ring Sampling (DRS) chip. Gain variations of the G-APDs due to temperature or background-light variations are compensated by a high-voltage feedback system.

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