SMuK 2023 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 139: Neutrinos VI

T 139.2: Vortrag

Donnerstag, 23. März 2023, 17:45–18:00, POT/0051

Design and fabrication of MMC-based P2 detectors to be coupled to scintillating crystals at mK temperatures — •Ashish Jadhav, Christian Enss, Andreas Fleischmann, Daniel Hengstler, Daniel Unger, and Loredana Gastaldo — Kirchhoff Institute for Physics, Heidelberg University, Im Neuenheimer Feld 227, 69120 Heidelberg, Germany.

We present the development of high-energy resolution integrated photon and phonon detectors (P2), based on low-temperature Metallic Magnetic Calorimeters (MMC) to be coupled to a scintillating crystal operated at 20 mK. The present design of P2 is based on a 3 inch wafer. The central part, of area 15 cm² is connected to the rest of the wafer through 7 legs fabricated using deep silicon etching and is used for the detection of visible photons emitted after the interaction of a particle in the crystal. On the outer part of the wafer, three double meander MMC detectors are fabricated as phonon detectors. They will be connected to the crystal for monitoring the increase in temperature upon the interaction of a particle. We aim at demonstrating an energy resolution better than 1 keV for the phonon detectors and a time resolution better than 1 µs for the photon detector. This detector development is part of the R&D for the AMoRE experiment searching for 0νββ decay in ¹⁰⁰Mo. Demonstrating the expected performance for P2 will have a substantial impact on background reduction and influence the design of detector modules for the next stage of the AMoRE experiment.