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Improvement of the Energy Resolution via an Optimized Digital Signal Processing in GERDA Phase I

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arxiv 1502.04392 v1 pith:XOD3DY27 submitted 2015-02-15 physics.ins-det nucl-ex

Improvement of the Energy Resolution via an Optimized Digital Signal Processing in GERDA Phase I

M. Agostini , M. Allardt , A.M. Bakalyarov , M. Balata , I. Barabanov , N. Barros , L. Baudis , C. Bauer
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N. Becerici-Schmidt E. Bellotti S. Belogurov S.T. Belyaev G. Benato A. Bettini L. Bezrukov T. Bode D. Borowicz V. Brudanin R. Brugnera D. Budj\'a\v{s} A. Caldwell C. Cattadori A. Chernogorov V. D'Andrea E.V. Demidova A. di Vacri A. Domula E. Doroshkevich V. Egorov R. Falkenstein O. Fedorova K. Freund N. Frodyma A. Gangapshev A. Garfagnini P. Grabmayr V. Gurentsov K. Gusev A. Hegai M. Heisel S. Hemmer G. Heusser W. Hofmann M. Hult L.V. Inzhechik J. Janicsk\'o Cs\'athy J. Jochum M. Junker V. Kazalov T. Kihm I.V. Kirpichnikov A. Kirsch A. Klimenko K.T. Kn\"opfle O. Kochetov V.N. Kornoukhov V.V. Kuzminov M. Laubenstein A. Lazzaro V.I. Lebedev B. Lehnert H.Y. Liao M. Lindner I. Lippi A. Lubashevskiy B. Lubsandorzhiev G. Lutter C. Macolino B. Majorovits W. Maneschg E. Medinaceli M. Misiaszek P. Moseev I. Nemchenok D. Palioselitis K. Panas L. Pandola K. Pelczar A. Pullia S. Riboldi N. Rumyantseva C. Sada M. Salathe C. Schmitt B. Schneider S. Sch\"onert J. Schreiner A.-K. Sch\"utz O. Schulz B. Schwingenheuer O. Selivanenko M. Shirchenko H. Simgen A. Smolnikov L. Stanco M. Stepaniuk C.A. Ur L. Vanhoefer A.A. Vasenko A. Veresnikova K. von Sturm V. Wagner M. Walter A. Wegmann T. Wester H. Wilsenach M. Wojcik E. Yanovich P. Zavarise I. Zhitnikov S.V. Zhukov D. Zinatulina K. Zuber G. Zuzel
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classification physics.ins-det nucl-ex
keywords betaenergygerdabeendecaydigitalimprovementoptimized
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An optimized digital shaping filter has been developed for the GERDA experiment which searches for neutrinoless double beta decay in 76Ge. The GERDA Phase I energy calibration data have been reprocessed and an average improvement of 0.3 keV in energy resolution (FWHM) at the 76Ge Q value for 0\nu\beta\beta decay is obtained. This is possible thanks to the enhanced low-frequency noise rejection of this Zero Area Cusp (ZAC) signal shaping fillter.

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