https://doi.org/10.1140/epjc/s10052-024-13282-8
Regular Article - Experimental Physics
DoubleTES detectors to investigate the CRESST low energy background: results from above-ground prototypes
1
Max-Planck-Institut für Physik, 85748, Garching bei München, Germany
2
Institut für Hochenergiephysik der Österreichischen Akademie der Wissenschaften, 1050, Wien, Austria
3
Atominstitut, Technische Universität Wien, 1020, Wien, Austria
4
INFN, Laboratori Nazionali del Gran Sasso, 67100, Assergi, Italy
5
Faculty of Mathematics, Physics and Informatics, Comenius University, 84248, Bratislava, Slovakia
6
Physik-Department, TUM School of Natural Sciences, Technische Universität München, 85747, Garching, Germany
7
Eberhard-Karls-Universität Tübingen, 72076, Tübingen, Germany
8
Department of Physics, University of Oxford, OX1 3RH, Oxford, UK
9
LIBPhys-UC, Departamento de Fisica, Universidade de Coimbra, P3004 516, Coimbra, Portugal
10
Walther-Meißner-Institut für Tieftemperaturforschung, 85748, Garching, Germany
11
GSSI-Gran Sasso Science Institute, 67100, L’Aquila, Italy
12
Dipartimento di Ingegneria Civile e Meccanica, Università degli Studi di Cassino e del Lazio Meridionale, 03043, Cassino, Italy
13
Dipartimento di Fisica, Università di Milano Bicocca, 20126, Milan, Italy
14
Instituto de Física, Universidade de São Paulo, 05508-090, São Paulo, Brazil
15
Department of Physics, ETH Zurich, 8093, Zurich, Switzerland
16
ETH Zurich-PSI Quantum Computing Hub, Paul Scherrer Institute, 5232, Villigen, Switzerland
ah
mancuso@mpp.mpg.de
ax
frapucci@mpp.mpg.de
Received:
4
April
2024
Accepted:
21
August
2024
Published online:
5
October
2024
In recent times, the sensitivity of low-mass direct dark matter searches has been limited by unknown low energy backgrounds close to the energy threshold of the experiments known as the low energy excess (LEE). The CRESST experiment utilises advanced cryogenic detectors constructed with different types of crystals equipped with Transition Edge Sensors (TESs) to measure signals of nuclear recoils induced by the scattering of dark matter particles in the detector. In CRESST, this low energy background manifests itself as a steeply rising population of events below 200 eV. A novel detector design named doubleTES using two identical TESs on the target crystal was studied to investigate the hypothesis that the events are sensor-related. We present the first results from two such modules, demonstrating their ability to differentiate between events originating from the crystal’s bulk and those occurring in the sensor or in its close proximity.
The original online version of this article was revised: the collaboration’s name CRESST Collaboration was incorrectly written in the HTML version as GRAPES - III Collaboration.
An erratum to this article is available online at https://doi.org/10.1140/epjc/s10052-024-13581-0.
Copyright comment corrected publication 2024
© The Author(s) 2024. corrected publication 2024
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Funded by SCOAP3.
