Göttingen 2025 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 101: Neutrino Physics VIII

T 101.6: Vortrag

Freitag, 4. April 2025, 10:15–10:30, VG 3.103

Data reduction of the ECHo-1k-Au data — •Rasmus Jeske — Kirchhoff Institute for Physics, Heidelberg University — ECHo Collaboration

For the ECHo-1k experiment two metallic magnetic calorimeter arrays with Ho-163 implanted in the absorber have been used. They differ in the host materials in which Ho-163 was implanted, Au and Ag. Data reduction algorithms and quality control procedures have been developed and characterized for the analysis of the data acquired with detectors having Ho-163 implanted in silver. We present the application of the data reduction protocol to the data acquired with detector having Ho-163 implanted in gold, ECHo-1k-Au data. We discuss the criteria to identify and eliminate triggered noise and other possible spurious events along with the efficiency and stability of the filters. From the analysis of the obtained spectra we derive the properties of the detectors in term of energy resolution and energy calibration over the course of the experiment. In addition, we demonstrated that the probability of having spectral shape artifacts in the endpoint region due to misinterpreted bad events is smaller than the statistical error.

Keywords: Data reduction; ECHo-Collaboration; ECHo-1k