{"paper":{"title":"Design, Commissioning and Performance of the PIBETA Detector at PSI","license":"","headline":"","cross_cats":["physics.ins-det"],"primary_cat":"hep-ex","authors_text":"A.S. Korenchenko, B.A. VanDevender, B.G. Ritchie, B. Krause, Ch. Broennimann, D. Mzhavia, D. Pocanic, D. Renker, D.W. Lawrence, E. Frlez, H. Obermeier, H.-P. Wirtz, I. Supek, J.E. Koglin, J.F. Crawford, K.A. Assamagan, K.O.H. Ziock, L.C. Smith, M.A. Bychkov, M. Daum, N.A. Kuchinsky, N.P. Kravchuk, N. Soic, N.V. Khomutov, P.L. Slocum, R.C. Minehart, R. Frosch, R. Horisberger, R. Schnyder, S.M. Korenchenko, S. Ritt, Th. Fluegel, T. Kozlowski, T. Sakhelashvili, V.A. Baranov, V.A. Kalinnikov, V.V. Karpukhin, V.V. Sidorkin, W.A. Stephens, W. Bertl, W. Li, Yu. Bagaturia, Y. Wang, Z. Tsamalaidze","submitted_at":"2003-12-04T16:00:25Z","abstract_excerpt":"We describe the design, construction and performance of the PIBETA detector built for the precise measurement of the branching ratio of pion beta decay, pi+ -> pi0 e+ nu, at the Paul Scherrer Institute. The central part of the detector is a 240-module spherical pure CsI calorimeter covering 3*pi sr solid angle. The calorimeter is supplemented with an active collimator/beam degrader system, an active segmented plastic target, a pair of low-mass cylindrical wire chambers and a 20-element cylindrical plastic scintillator hodoscope. The whole detector system is housed inside a temperature-controll"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ex/0312017","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/hep-ex/0312017/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}