An optimized digital shaping filter has been developed for the Gerda experiment which searches for neutrinoless double beta decay in Ge-76. The Gerda Phase I energy calibration data have been reprocessed and an average improvement of 0.3 keV in energy resolution (FWHM) corresponding to 10% at the Q value for 0 nu beta beta decay in Ge-76 is obtained. This is possible thanks to the enhanced low-frequency noise rejection of this Zero Area Cusp (ZAC) signal shaping filter.
Improvement of the energy resolution via an optimized digital signal processing in GERDA Phase I
BRUGNERA, RICCARDO;GARFAGNINI, ALBERTO;HEMMER, SABINE ELISABETH;MEDINACELI VILLEGAS, EDUARDO;SADA, CINZIA;VON STURM ZU VEHLINGEN, KATHARINA CACILIE;
2015
Abstract
An optimized digital shaping filter has been developed for the Gerda experiment which searches for neutrinoless double beta decay in Ge-76. The Gerda Phase I energy calibration data have been reprocessed and an average improvement of 0.3 keV in energy resolution (FWHM) corresponding to 10% at the Q value for 0 nu beta beta decay in Ge-76 is obtained. This is possible thanks to the enhanced low-frequency noise rejection of this Zero Area Cusp (ZAC) signal shaping filter.
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