Signal partitioning in superfluid 4He: a Monte Carlo approach

Superfluid 4He is an ideal candidate for the direct detection of light dark matter via nuclear recoils thanks to its low nuclear mass and the possibility to reach a low-detection-energy threshold by exploiting the generated quasiparticles. The design of future detectors based on this target, such as...

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Hauptverfasser: Toschi, Francesco (VerfasserIn) , Brunold, Axel (VerfasserIn) , Burmeister, Lea (VerfasserIn) , Eitel, Klaus (VerfasserIn) , Enss, Christian (VerfasserIn) , Fascione, Eleanor (VerfasserIn) , Ferber, Torben (VerfasserIn) , Gabriel, Rahel (VerfasserIn) , Hauswald, Lena (VerfasserIn) , Kahlhoefer, Felix (VerfasserIn) , Kempf, Sebastian (VerfasserIn) , Klute, Markus (VerfasserIn) , Krosigk, Belina von (VerfasserIn) , Lindemann, Sebastian (VerfasserIn) , Maier, Benedikt (VerfasserIn) , Schumann, Marc (VerfasserIn) , Solmaz, Melih (VerfasserIn) , Valerius, Kathrin (VerfasserIn) , Wagner, Friedrich Carl (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 2025
In: Physical review
Year: 2025, Jahrgang: 111, Heft: 3, Pages: 032013-1 - 032013-14
ISSN:2470-0029
DOI:10.1103/PhysRevD.111.032013
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevD.111.032013
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.111.032013
Volltext
Verfasserangaben:Francesco Toschi, Axel Brunold, Lea Burmeister, Klaus Eitel, Christian Enss, Eleanor Fascione, Torben Ferber, Rahel Gabriel, Lena Hauswald, Felix Kahlhoefer, Sebastian Kempf, Markus Klute, Belina von Krosigk, Sebastian Lindemann, Benedikt Maier, Marc Schumann, Melih Solmaz, Kathrin Valerius, and Friedrich Carl Wagner (DELight Collaboration)

MARC

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520 |a Superfluid 4He is an ideal candidate for the direct detection of light dark matter via nuclear recoils thanks to its low nuclear mass and the possibility to reach a low-detection-energy threshold by exploiting the generated quasiparticles. The design of future detectors based on this target, such as the DELight experiment, requires a proper understanding of the formation and partitioning of the signal for different energy depositions from various sources. This work presents an overview of the physical processes involved in the energy deposition of recoiling electrons and ions, and it describes a Monte Carlo approach to the partitioning of the signal into different channels. Despite an overall good agreement with existing literature, differences in the region of interest for light dark matter searches below 200 eV are observed. 
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