4.7 Article

Improvement of the energy resolution via an optimized digital signal processing in GERDA Phase I

Journal

EUROPEAN PHYSICAL JOURNAL C
Volume 75, Issue 6, Pages -

Publisher

SPRINGER
DOI: 10.1140/epjc/s10052-015-3409-6

Keywords

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Funding

  1. German Federal Ministry for Education and Research (BMBF)
  2. German Research Foundation (DFG) via the Excellence Cluster Universe
  3. Italian Istituto Nazionale di Fisica Nucleare (INFN)
  4. Max Planck Society (MPG)
  5. Polish National Science Center (NCN)
  6. Foundation for Polish Science (MPD programme)
  7. Russian Foundation for Basic Research (RFBR)
  8. Swiss National Science Foundation (SNF)

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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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