Heidelberg 2022 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 102: Neutrino Physics without Accelerators 7

T 102.5: Vortrag

Donnerstag, 24. März 2022, 17:20–17:35, T-H34

From Temperature pulses to high statistic Ho-163 spectrum: Analysis Algorithms for the ECHo Experiment — •Markus Griedel, Arnulf Barth, Robert Hammann, Daniel Hengstler, Neven Kovac, Federica Mantegazzini, Andreas Fleischmann, and Loredana Gastaldo — Kirchhoff-Institute for Physics, Heidelberg University

The goal of the Electron Capture in Ho-163 (ECHo) experiment is the determination of the effective electron neutrino mass by analysing the electron capture (EC) spectrum of Ho-163. The ECHo experiment uses Metallic magnetic calorimeters (MMCs) operating at millikelvin temperatures, in which the Ho-163 has been implanted. In order to reliably infer the energy of Ho-163 events and discard triggered noise or pile-up events, fast and robust analysis algorithms are required. For this, algorithms based on filters acting on the trigger time of the events and on filters using pulse shape information were developed. To convert the measured temperature pulses into an energy spectrum, further steps are takes, as corrections for temperature shifts and energy calibration.

We describe the steps we took for the reduction of the data acquired during the first phase of the ECHo experiment, ECHo-1k; as well as the process to build a high statistic Ho-163 spectrum from data acquired with several single Ho-163 implanted MMCs.