/ physics.ins-det arXiv:1601.06007

Flux Modulations seen by the Muon Veto of the GERDA Experiment

Agostini, M. (Munich, Tech. U.) ; Allardt, M. (Dresden, Tech. U.) ; Bakalyarov, A.M. (Kurchatov Inst., Moscow) ; Balata, M. (Gran Sasso) ; Barabanov, I. (Moscow, INR) ; Barros, N. (Dresden, Tech. U.) ; Baudis, L. (Zurich U.) ; Bauer, C. (Heidelberg, Max Planck Inst.) ; Becerici-Schmidt, N. (Munich, Max Planck Inst.) ; Bellotti, E. (INFN, Milan Bicocca) ; Belogurov, S. (Moscow, INR) ; Belyaev, S.T. (Kurchatov Inst., Moscow) ; Benato, G. (Zurich U.) ; Bettini, A. (INFN, Padua) ; Bezrukov, L. (Moscow, INR) ; Bode, T. (Munich, Tech. U.) ; Borowicz, D. (Dubna, JINR) ; Brudanin, V. (Dubna, JINR) ; Brugnera, R. (INFN, Padua) ; Caldwell, A. (Munich, Max Planck Inst.) ; Chernogorov, A. (Moscow, ITEP) ; D'Andrea, V. (Gran Sasso) ; Demidova, E.V. (Moscow, ITEP) ; di Vacri, A. (Gran Sasso) ; Domula, A. (Dresden, Tech. U.) ; Doroshkevich, E. (Moscow, INR) ; Egorov, V. (Dubna, JINR) ; Falkenstein, R. (Tubingen U.) ; Fedorova, O. (Moscow, INR) ; Freund, K. (Tubingen U.) ; Frodyma, N. (Jagiellonian U.) ; Gangapshev, A. (Heidelberg, Max Planck Inst.) ; Garfagnini, A. (INFN, Padua) ; Grabmayr, P. (Tubingen U.) ; Gurentsov, V. (Moscow, INR) ; Gusev, K. (Kurchatov Inst., Moscow) ; Hegai, A. (Tubingen U.) ; Heisel, M. (Heidelberg, Max Planck Inst.) ; Hemmer, S. (INFN, Padua) ; Hofmann, W. (Heidelberg, Max Planck Inst.) ; Hult, M. (Euratom, Geel) ; Inzhechik, L.V. (Moscow, INR) ; Ioannucci, L. (Gran Sasso) ; Csathy, J.Janicsko (Munich, Tech. U.) ; Jochum, J. (Tubingen U.) ; Junker, M. (Gran Sasso) ; Kazalov, V. (Moscow, INR) ; Kihm, T. (Heidelberg, Max Planck Inst.) ; Kirpichnikov, I.V. (Moscow, ITEP) ; Kirsch, A. (Heidelberg, Max Planck Inst.) ; Klimenko, A. (Heidelberg, Max Planck Inst.) ; Knapp, M. (Tubingen U.) ; Knopfle, K.T. (Heidelberg, Max Planck Inst.) ; Kochetov, O. (Dubna, JINR) ; Kornoukhov, V.N. (Moscow, INR) ; Kuzminov, V.V. (Moscow, INR) ; Laubenstein, M. (Gran Sasso) ; Lazzaro, A. (Munich, Tech. U.) ; Lebedev, V.I. (Kurchatov Inst., Moscow) ; Lehnert, B. (Dresden, Tech. U.) ; Liao, H.Y. (Munich, Max Planck Inst.) ; Lindner, M. (Heidelberg, Max Planck Inst.) ; Lippi, I. (INFN, Padua) ; Lubashevskiy, A. (Dubna, JINR) ; Lubsandorzhiev, B. (Moscow, INR) ; Lutter, G. (Euratom, Geel) ; Macolino, C. (Orsay) ; Majorovits, B. (Munich, Max Planck Inst.) ; Maneschg, W. (Heidelberg, Max Planck Inst.) ; Medinaceli, E. (INFN, Padua) ; Misiaszek, M. (Jagiellonian U.) ; Moseev, P. (Moscow, INR) ; Nemchenok, I. (Dubna, JINR) ; Palioselitis, D. (Munich, Max Planck Inst.) ; Panas, K. (Jagiellonian U.) ; Pandola, L. (INFN, Catania) ; Pelczar, K. (Jagiellonian U.) ; Pullia, A. (INFN, Milan) ; Riboldi, S. (INFN, Milan) ; Ritter, F. (Tubingen U.) ; Rumyantseva, N. (Dubna, JINR) ; Sada, C. (INFN, Padua) ; Salathe, M. (Heidelberg, Max Planck Inst.) ; Schmitt, C. (Tubingen U.) ; Schneider, B. (Dresden, Tech. U.) ; Schonert, S. (Munich, Tech. U.) ; Schreiner, J. (Heidelberg, Max Planck Inst.) ; Schutz, A.K. (Tubingen U.) ; Schulz, O. (Munich, Max Planck Inst.) ; Schwingenheuer, B. (Heidelberg, Max Planck Inst.) ; Selivanenko, O. (Moscow, INR) ; Shevchik, E. (Dubna, JINR) ; Shirchenko, M. (Dubna, JINR) ; Simgen, H. (Heidelberg, Max Planck Inst.) ; Smolnikov, A. (Heidelberg, Max Planck Inst.) ; Stepaniuk, M. (Heidelberg, Max Planck Inst.) ; Strecker, H. (Heidelberg, Max Planck Inst.) ; Vanhoefer, L. (Munich, Max Planck Inst.) ; Vasenko, A.A. (Moscow, ITEP) ; Veresnikova, A. (Moscow, INR) ; von Sturm, K. (INFN, Padua) ; Wagner, V. (Heidelberg, Max Planck Inst.) ; Walter, M. (Zurich U.) ; Wegmann, A. (Heidelberg, Max Planck Inst.) ; Wester, T. (Dresden, Tech. U.) ; Wilsenach, H. (Dresden, Tech. U.) ; Wojcik, M. (Jagiellonian U.) ; Yanovich, E. (Moscow, INR) ; Zhitnikov, I. (Dubna, JINR) ; Zhukov, S.V. (Kurchatov Inst., Moscow) ; Zinatulina, D. (Dubna, JINR) ; Zuber, K. (Dresden, Tech. U.) ; Zuzel, G. (Jagiellonian U.)

Pages: 7

Abstract: The GERDA experiment at LNGS of INFN is equipped with an active muon veto. The main part of the system is a water Cherenkov veto with 66~PMTs in the water tank surrounding the GERDA cryostat. The muon flux recorded by this veto shows a seasonal modulation. Two effects have been identified which are caused by secondary muons from the CNGS neutrino beam (2.2 %) and a temperature modulation of the atmosphere (1.4 %). A mean cosmic muon rate of $I^0_{\mu} = (3.477 \pm 0.002_{\textrm{stat}} \pm 0.067_{\textrm{sys}}) \times 10^{-4}$/(s$\cdot$m$^2$) was found in good agreement with other experiments at LNGS at a depth of 3500~meter water equivalent.

Web-Page: http://inspirehep.net/record/1416654/files/fig06_alphaT_mwe.png; http://inspirehep.net/record/1416654/files/fig03_cngsint_coin_div.png; http://inspirehep.net/record/1416654/files/fig01_cryostat_v13.png; http://inspirehep.net/record/1416654/files/fig04_muonrate_Teff.png; http://inspirehep.net/record/1416654/files/fig05_correlation.png; http://inspirehep.net/record/1416654/files/fig02_timeres.png; http://inspirehep.net/record/1416654/files/arXiv:1601.06007.pdf

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