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Type: Journal article
Title: Calibration and performance of the photon sensor response of FACT - the first G-APD Cherenkov telescope
Author: Biland, A.
Bretz, T.
Buß, J.
Commichau, V.
Djambazov, L.
Dorner, D.
Einecke, S.
Eisenacher, D.
Freiwald, J.
Grimm, O.
Von Gunten, H.
Haller, C.
Hempfling, C.
Hildebrand, D.
Hughes, G.
Horisberger, U.
Knoetig, M.
Krähenbühl, T.
Lustermann, W.
Lyard, E.
et al.
Citation: Journal of Instrumentation, 2014; 9(10):P10012-1-P10012-41
Publisher: IOP Publishing
Issue Date: 2014
ISSN: 1748-0221
Statement of
A. Biland, T. Bretz, J. Buß, V. Commichau, L. Djambazov, D. Dorner, S. Einecke, D. Eisenacher, J. Freiwald, O. Grimm, H. von Gunten, C. Haller, C. Hempfling, D. Hildebrand, G. Hughes, U. Horisberger, M.L. Knoetig, T. Krähenbühl, W. Lustermann, E. Lyard, K. Mannheim, K. Meier, S. Mueller, D. Neise, A.-K. Overkemping, A. Paravac, F. Pauss, W. Rhode, U. Röser, J.-P. Stucki, T. Steinbring, F. Temme, J. Thaele, P. Vogler, R. Walter and Q. Weitzel
Abstract: The First G-APD Cherenkov Telescope (FACT) is the first in-operation test of the performance of silicon photo detectors in Cherenkov Astronomy. For more than two years it is operated on La Palma, Canary Islands (Spain), for the purpose of long-term monitoring of astrophysical sources. For this, the performance of the photo detectors is crucial and therefore has been studied in great detail. Special care has been taken for their temperature and voltage dependence implementing a correction method to keep their properties stable. Several measurements have been carried out to monitor the performance. The measurements and their results are shown, demonstrating the stability of the gain below the percent level. The resulting stability of the whole system is discussed, nicely demonstrating that silicon photo detectors are perfectly suited for the usage in Cherenkov telescopes, especially for long-term monitoring purpose.
Keywords: Cherenkov detectors; photon detectors for UV, visible and IR photons (solid-state) (PIN diodes, APDs, Si-PMTs, G-APDs, CCDs, EBCCDs, EMCCDs etc); gamma detectors; gamma telescopes
Rights: Content from this work may be used under the terms of the Creative Commons Attribution 3.0 License. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
RMID: 0030077909
DOI: 10.1088/1748-0221/9/10/P10012
Appears in Collections:Physics publications

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