The Korean Physical Society 06130 22, Teheran-ro 7-gil, Gangnam-gu, Seoul, Republic of Korea 610 Representation : Tae Won NOH TEL: 02-556-4737 FAX: 02-554-1643 E-mail : webmaster@kps.or.kr Copyright(C) KPS, All rights reserved.
30 May 2022 to 4 June 2022
Virtual Seoul
Asia/Seoul timezone

From ECHo-1k to ECHo-100k: Optimisation of the High-Resolution Metallic Magnetic Calorimeters with Embedded $^{163}$Ho

Not scheduled
20m
Virtual Seoul

Virtual Seoul

Poster Neutrino mass Poster

Speaker

Neven Kovac (Kirchhoff Institute for Physics, Heidelberg University, Heidelberg, Germany)

Description

Arrays with tens to hundreds of Metallic Magnetic Calorimeters (MMCs), each implanted with $^{163}$Ho, were selected for the ECHo experiment, because of the excellent energy resolution of up to 2-3 eV, a fast response time below 1 µs, and a near-linear detector response that allows for a reliable energy calibration. Based on the performance achieved with the detectors developed for the first phase of the ECHo experiment, the ECHo-1k phase, a new design of 64-pixel ECHo-100k arrays has been conceived. This new design features an optimised single pixel geometry, allowing for a larger $^{163}$Ho activity of 10 Bq per pixel. First wafers, each with 40 ECHo-100k detector chips, have been fabricated, and the characterisation of the newly developed detector arrays at different temperatures has been performed. We present the measured performance of both the implanted and non-implanted ECHo-100k detector pixels. In conclusion, we discuss the on-going R&D to demonstrate the scalability of detector fabrication, including the ion-implantation of $^{163}$Ho, as a preparation for the large-scale production of the 12000 MMC pixels, foreseen for the ECHo-100k phase of the experiment.

Collaboration The ECHo Collaboration

Primary author

Neven Kovac (Kirchhoff Institute for Physics, Heidelberg University, Heidelberg, Germany)

Co-authors

Arnulf Barth (Kirchhoff Institute for Physics, Heidelberg University, Heidelberg, Germany) Sebastian Berndt (Institute of Physics, Johannes Gutenberg University Mainz, Mainz, Germany; Department of Chemistry - TRIGA Site, Johannes Gutenberg University Mainz, Mainz, Germany) Lorenzo Calza (Kirchhoff Institute for Physics, Heidelberg University, Heidelberg, Germany) Holger Dorrer (Department of Chemistry - TRIGA Site, Johannes Gutenberg University Mainz, Mainz, Germany) Christoph E. Düllmann (Department of Chemistry - TRIGA Site, Johannes Gutenberg University Mainz, Mainz, Germany; GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany; Helmholtz Institute Mainz, Mainz, Germany) Christian Enss (Kirchhoff Institute for Physics, Heidelberg University, Heidelberg, Germany) Andreas Fleischmann (Kirchhoff Institute for Physics, Heidelberg University, Heidelberg, Germany) Loredana Gastaldo (Kirchhoff Institute for Physics, Heidelberg University, Heidelberg, Germany) Markus Griedel (Kirchhoff Institute for Physics, Heidelberg University, Heidelberg, Germany) Daniel Hengstler (Kirchhoff Institute for Physics, Heidelberg University, Heidelberg, Germany) Tom Kieck (Institute of Physics, Johannes Gutenberg University Mainz, Mainz, Germany) Nina Kneip (Institute of Physics, Johannes Gutenberg University Mainz, Mainz, Germany) Federica Mantegazzini (Kirchhoff Institute for Physics, Heidelberg University, Heidelberg, Germany) Andreas Reifenberger (Kirchhoff Institute for Physics, Heidelberg University, Heidelberg, Germany) Alexander Karol Slawik (Kirchhoff Institute for Physics, Heidelberg University, Heidelberg, Germany) Klaus Wendt (Institute of Physics, Johannes Gutenberg University Mainz, Mainz, Germany)

Presentation Materials