Erlangen 2026 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
T: Fachverband Teilchenphysik
T 60: Methods in Astroparticle Physics III
T 60.8: Vortrag
Mittwoch, 18. März 2026, 18:00–18:15, KS 00.004
Microwave Multiplexing readout for the ECHo Experiment — •Dominik Zawierucha for the ECHo collaboration — KIP im Neuenheimerfeld 227 Heidelberg 69120
The Electron Capture in Holmium-163 (ECHo) experiment uses metallic magnetic calorimeters (MMCs) to measure the energy spectrum of the electron-capture decay of 163Ho implanted inside the detector. The analysis of the end-point region of this spectrum can be used to determine the effective electron neutrino mass. To achieve sub-eV sensitivity to the neutrino mass, a high-statistics energy spectrum with more than 1013 events is required. This necessitates a multiplexed readout scheme that enables consistent, high-energy-resolution, simultaneous readout of approximately 20,000 163Ho-implanted MMC detectors over a long acquisition period.
In ECHo-LE (Large Experiment), this is achieved through the application of microfabricated microwave resonators coupled to radio-frequency superconducting quantum interference devices (rf-SQUIDs) used to acquire signals from the MMC detectors. In this scheme, each detector (400 in total) is coupled to an individual resonator with a resonance frequency in the 4–8 GHz range, allowing the simultaneous readout of multiple detectors by monitoring the transmission through a common feedline.
We discuss the preparation of the 25 high-frequency readout lines and present the status of the multiplexer development for ECHo-LE.
Keywords: Neutrino Mass; Low Temperature Detectors; Metallic Magnetic Calorimeters; Microwave Multiplexing; Quantum Sensors