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 causes have been identified: ( i ) sec- ondary muons from the Cngs neutrino beam (2.2%) and ( ii ) a temperature modulation of the atmosphere (1.4%). A mean cosmic muon rate of I 0 μ= (3 . 477 ±0 . 002 stat ±0 . 067 sys ) ×10 −4 /(s ·m 2 ) was found in good agreement with other experiments at Lngs . Combining the present result with those from previous ex- periments at Lngs the effective temperature coefficient αT, Lngs is determined to 0.93 ±0.03. A fit of the temperature coefficients measured at various underground sites yields a kaon to pion ratio r K / πof 0.10 ±0.03.

AGOSTINI M.;  ALLARDT M.;  BAKALYAROV A.M.;  BALATA M.;  BARABANOV I.;  BARROS N.;  BAUDIS L.;  BAUER C.;  BECERICI-SCHMIDT N.;  BELLOTTI E.;  BELOGUROV S.;  BELYAEV S.T.;  BENATO G.;  BETTINI A.;  BEZRUKOV L.;  BODE T.;  BOROWICZ D.;  BRUDANIN V.;  BRUGNERA R.;  CALDWELL A.;  CATTADORI C;  CHERNOGOROV A.;  D'ANDREA V.;  DEMIDOVA E.V.;  DI VACRI A.;  DOMULA A.R.;  DOROSHKEVICH E.;  EGOROV V.;  FALKENSTEIN R.;  FEDOROVA O.;  FREUND K.;  FRODYMA N.;  GANGAPSHEV A.;  GARFAGNINI A.;  GRABMAYR P.;  GURENTSOV V.;  GUSEV K.;  HEGAI A.;  HEISEL M.;  HEMMER S.;  HOFMANN W.;  HULT Mikael;  IOANNUCCI L.;  INZHECHIK L.;  JANICSKO J.;  JOCHUM J.;  JUNKER M.;  KAZALOV V.;  KIHM T.;  KIRPICHNIKOV I;  KIRSCH A.;  KLIMENKO A.;  KNAPP M.;  KNOEPFLE K.T.;  KOCHETOV O.;  KUZMINOV V.;  KORNOUKHOV V.;  LAUBENSTEIN M.;  LAZZARO A.;  LEBEDEV V;  LEHNERT B.;  LIAO H.;  LINDNER M.;  LIPPI I.;  LUBASHEVSKY A.;  LUBSANDORZHIEV B.;  LUTTER Guillaume;  MACOLINO C.;  MANESCHG W.;  MEDINACELI E.;  MISIASZEK M.;  MOSEEV P.;  MAJOROVITS B.;  NEMCHENOK I.;  PALIOSELITIS D.;  PANAS K.;  PANDOLA L.;  PELCZAR K.;  PULLIA A.;  RIBOLDI S.;  RITTER F.;  RUMYANTSEVA N.;  SADA C.;  SALATHE M.;  SCHMITT C.;  SCHNEIDER B.;  SCHOENERT S.;  SCHREINER J.;  SCHULZ O.;  SCHWINGENHEUER B.;  SCHÜTZ A. K.;  SELIVANENKO O.;  SHEVCHIK E.;  SHIRCHENKO M.;  SIMGEN H.;  SMOLNIKOV A.;  STANCO L.;  STEPANIUK M.;  STRECKER H.;  VANHOEFER L.;  VASENKO A. A.;  VERESNIKOVA A.;  VON STURM K.;  WAGNER V.;  WALTER M.;  WEGMANN A.;  WESTER T.;  WIESINGER C.;  WILSENACH H.;  WOJCIK M.;  YANOVICH E.;  ZHITNIKOV I.;  ZHUKOV S. V.;  ZINATULINA D.;  ZUBER K.;  ZUZEL G.; 

2016-12-01

ELSEVIER SCIENCE BV

JRC100302

0927-6505,   

http://www.sciencedirect.com/science/article/pii/S0927650516301141,    https://publications.jrc.ec.europa.eu/repository/handle/JRC100302,   

10.1016/j.astropartphys.2016.08.002,