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Type: Artigo
Title: Characterization of the spontaneous light emission of the PMTs used in the Double Chooz experiment
Author: Abe, Y.
Abrahao, T.
Almazan, H.
Alt, C.
Appel, S.
Baussan, E.
Bekman, I.
Bergevin, M.
Bezerra, T. J. C.
Bezrukov, L.
Blucher, E.
Brugiere, T.
Buck, C.
Busenitz, J.
Cabrera, A.
Calvo, E.
Camilleri, L.
Carr, R.
Cerrada, M.
Chauveau, E.
Chimenti, P.
Collin, A. P.
Conover, E.
Conrad, J. M.
Crespo-Anadon, J. I.
Crum, K.
Cucoanes, A. S.
Damon, E.
Dawson, J. V.
de Kerret, H.
Dhooghe, J.
Dietrich, D.
Djurcic, Z.
dos Anjos, J. C.
Dracos, M.
Etenko, A.
Fallot, M.
Felde, J.
Fernandes, S. M.
Fischer, V.
Franco, D.
Franke, M.
Furuta, H.
Gil-Botella, I.
Giot, L.
Goger-Neff, M.
Gomez, H.
Gonzalez, L. F. G.
Goodenough, L.
Goodman, M. C.
Haag, N.
Hara, T.
Haser, J.
Hellwig, D.
Hofmann, M.
Horton-Smith, G. A.
Hourlier, A.
Ishitsuka, M.
Jimenez, S.
Jochum, J.
Jollet, C.
Kaether, F.
Kalousis, L. N.
Kamyshkov, Y.
Kaneda, M.
Kaplan, D. M.
Kawasaki, T.
Kemp, E.
Kryn, D.
Kuze, M.
Lachenmaier, T.
Lane, C. E.
Lasserre, T.
Letourneau, A.
Lhuillier, D.
Lima, H. P.
Lindner, M.
Lopez-Castano, J. M.
LoSecco, J. M.
Lubsandorzhiev, B.
Lucht, S.
Maeda, J.
Mariani, C.
Maricic, J.
Martino, J.
Matsubara, T.
Mention, G.
Meregaglia, A.
Miletic, T.
Milincic, R.
Minotti, A.
Nagasaka, Y.
Navas-Nicolas, D.
Novella, P.
Nunokawa, H.
Oberauer, L.
Obolensky, M.
Onillon, A.
Osborn, A.
Palomares, C.
Pepe, I. M.
Perasso, S.
Porta, A.
Pronost, G.
Reichenbacher, J.
Reinhold, B.
Rohling, M.
Roncin, R.
Rybolt, B.
Sakamoto, Y.
Santorelli, R.
Schilithz, A. C.
Schonert, S.
Schoppmann, S.
Shaevitz, M. H.
Sharankova, R.
Shrestha, D.
Sibille, V.
Sinev, V.
Skorokhvatov, M.
Smith, E.
Soiron, M.
Spitz, J.
Stahl, A.
Stancu, I.
Stokes, L. F. F.
Strait, M.
Suekane, F.
Sukhotin, S.
Sumiyoshi, T.
Sun, Y.
Svoboda, R.
Terao, K.
Tonazzo, A.
Thi, H. H. T.
Valdiviesso, G.
Vassilopoulos, N.
Verdugo, A.
Veyssiere, C.
Vivier, M.
von Feilitzsch, F.
Wagner, S.
Walsh, N.
Watanabe, H.
Wiebusch, C.
Wurm, M.
Yang, G.
Yermia, F.
Zimmer, V.
Abstract: During the commissioning of the first of the two detectors of the Double Chooz experiment, an unexpected and dominant background caused by the emission of light inside the optical volume has been observed. A specific study of the ensemble of phenomena called Light Noise has been carried out in-situ, and in an external laboratory, in order to characterize the signals and to identify the possible processes underlying the effect. Some mechanisms of instrumental noise originating from the PMTs were identified and it has been found that the leading one arises from the light emission localized on the photomultiplier base and produced by the combined effect of heat and high voltage across the transparent epoxy resin covering the electric components. The correlation of the rate and the amplitude of the signal with the temperature has been observed. For the first detector in operation the induced background has been mitigated using online and offline analysis selections based on timing and light pattern of the signals, while a modification of the photomultiplier assembly has been implemented for the second detector in order to blacken the PMT bases.
Subject: Antineutrinos
Detectores de neutrinos
Country: Reino Unido
Editor: Institute of Physics Publishing
Citation: Journal Of Instrumentation. Iop Publishing Ltd, v. 11, p. , 2016.
Rights: fechado
Identifier DOI: 10.1088/1748-0221/11/08/P08001
Date Issue: 2016
Appears in Collections:IFGW - Artigos e Outros Documentos

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