Design and operation of FACT – the first G-APD Cherenkov telescope

Article Article scientifique Article Design and operation of FACT – the first G-APD Cherenkov telescope eng 2013 author Anderhub H. author Boccone Vittorio 776351 author Cadoux Franck 676514 author Dorner Daniela 681696 author Lyard Etienne 135516 author Meharga Mohamed Tahar 135156 author Montaruli Teresa 755310 P06008-P06008 10.1088/1748-0221/8/06/P06008 1748-0221 http://stacks.iop.org/1748-0221/8/i=06/a=P06008?key=crossref.215223ca70483ee275407a04fbb44da8 The First G-APD Cherenkov Telescope (FACT) is designed to detect cosmic gamma-rays with energies from several hundred GeV up to about 10 TeV using the Imaging Atmospheric Cherenkov Technique. In contrast to former or existing telescopes, the camera of the FACT telescope is comprised of solid-state Geiger-mode Avalanche Photodiodes (G-APD) instead of photomultiplier tubes for photo detection. It is the first full-scale device of its kind employing this new technology. The telescope is operated at the Observatorio del Roque de los Muchachos (La Palma, Canary Islands, Spain) since fall 2011. This paper describes in detail the design, construction and operation of the system, including hardware and software aspects. Technical experiences gained after one year of operation are discussed and conclusions with regard to future projects are drawn. Cherenkov detectors Photon detectors for UV, visible and IR photons Gamma telescopes Gamma detectors Dewey 500.2 34 Département de physique nucléaire et corpusculaire 132 false Journal of instrumentation 8 06 f5956a95-757d-4046-8de6-bef4e6992626 Article (Published version) Restricted Montaruli58.pdf 5256066 application/pdf restrictedAccess Faculté des sciences / Section de physique / Département de physique nucléaire et corpusculaire

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Design and operation of FACT – the first G-APD Cherenkov telescope	Journal of instrumentation			2013	627	2

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Meharga, Mohamed Tahar