Effect of Electronic Response on Pulse Shape Discrimination for the LEGEND Experiment
POSTER
Abstract
LEGEND is searching for neutrinoless double-beta decay, a rare process whose discovery would demonstrate that the neutrino is its own anti-particle. LEGEND is a low background experiment that uses an array of high purity germanium detectors to search for this process in 76Ge. LEGEND-200 has already taken data and the experiment intends to observe ~ 200 kg of detectors for about five years in a background free environment to achieve a half-life sensitivity of 1027. One key technique for achieving the necessary low backgrounds is pulse shape discrimination (PSD) using detector signals to distinguish between background-like and signal-like event topologies. This poster investigates the effect of the signal electronics response on the PSD parameters observed in LEGEND-200 data. We used digital signal processing to modify the electronic response to add a ringing component. Our investigation focuses on evaluating the distributions of key parameters in signal waveforms with and without this ringing effect.
*This work is supported by the U.S. DOE and the NSF, the LANL, ORNL and LBNL LDRD programs; the European ERC and Horizon programs; the German DFG, BMBF, and MPG; the Italian INFN; the Polish NCN and MNiSW; the Czech MEYS; the Slovak RDA; the Swiss SNF; the UK STFC; the Russian RFBR; the Canadian NSERC and CFI; the LNGS and SURF facilities. This research was supported in part by an appointment to the Education Collaboration Program at Oak Ridge National Laboratory, sponsored by the U.S. Department of Energy and administered by the Oak Ridge Institute for Science and Education.
Presenters
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Pablo Ruiz Crespo
- Alabama A&M University