{"paper":{"title":"FACT -- Operation of the First G-APD Cherenkov Telescope","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"A. Biland, A.-K. Overkemping, A. Paravac, C. Haller, C. Hempfling, D. Dorner, D. Eisenacher, D. Hildebrand, D. Neise, E. Lyard, F. Pauss, F. Temme, G. Hughes, H. von Gunten, J. Bu\\ss, J. Freiwald, J.-P. Stucki, J. Thaele, K. Mannheim, K. Meier, L. Djambazov, M. L. Knoetig, O. Grimm, P. Vogler, Q. Weitzel (FACT Collaboration), R. Walter, S. Einecke, S. Mueller, T. Bretz, T. Kr\\\"ahenb\\\"uhl, T. Steinbring, U. Horisberger, U. R\\\"oser, V. Commichau, W. Lustermann, W. Rhode","submitted_at":"2014-07-08T08:21:38Z","abstract_excerpt":"Since more than two years, the First G-APD Cherenkov Telescope (FACT) is operating successfully at the Canary Island of La Palma. Apart from its purpose to serve as a monitoring facility for the brightest TeV blazars, it was built as a major step to establish solid state photon counters as detectors in Cherenkov astronomy.\n  The camera of the First G-APD Cherenkov Telesope comprises 1440 Geiger-mode avalanche photo diodes (G-APD aka. MPPC or SiPM) for photon detection. Since properties as the gain of G-APDs depend on temperature and the applied voltage, a real-time feedback system has been dev"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.1988","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}