Münster 2017 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 14: Astroparticle Physics I
HK 14.4: Talk
Tuesday, March 28, 2017, 12:00–12:15, F 33
Development of novel pulse shape discrimination algorithms for Gerda — •Philipp Holl for the GERDA collaboration — Max-Planck-Institut für Physik, München
The Gerda experiment located at the Laboratori Nazionali del Gran Sasso of INFN searches for neutrinoless double beta decay using germanium diodes as source and detector. Its sensitivity strongly depends on the background. Pulse shape discrimination is used for the rejection of background events where multiple energy depositions happen inside the detector or the energy is deposited at the surface of the detector.
In this talk, a novel approach to pulse shape analysis making use of different digital signal processing filters and state-of-the-art machine learning algorithms will be presented. Preliminary results on the training of the classifiers will be shown using 228Th calibration data from Gerda.