GERDA第一阶段通过优化数字信号处理提高能量分辨率
Improvement of the Energy Resolution via an Optimized Digital Signal Processing in GERDA Phase I
摘要:
为寻找~(76)Ge无中微子双β衰变的GERDA实验设计了一个优化的数字成形滤波器。对GERDA第一阶段的能量刻度数据进行了重新处理,得到了在0νββ衰变的~(76)Ge Q值处能量分辨率(FWHM)平均提高0.3keV的结果。这是可能的,这得益于增强的低频噪声抑制的零面积尖(ZAC)信号整形滤波器。
英文摘要:
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 0νββdecay 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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