Studies of simulation framework for NνDEx experiment Article Swipe
Tianyu Liang
,
H. Wang
,
Dongliang Zhang
,
C. Gao
,
Xiangming Sun
,
Feng Liu
,
Jun O. Liu
,
Chengui Lu
,
Yichen Yang
,
Chengxin Zhao
,
Hao Qiu
,
Kai Chen
·
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.48550/arxiv.2508.13582
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.48550/arxiv.2508.13582
The N$ν$DEx experiment aims to search for the neutrinoless double beta decay of $^{82}$Se using a high-pressure $^{82}$SeF$_6$ gas time projection chamber (TPC). Under the assumption of two kinds of charge carriers would be formed, the difference in drift velocities between these ion species enables trigger-less event reconstruction and offers the potential for excellent energy resolution through direct charge collection. In this study, we present a simulation framework for the N$ν$DEx ion TPC. The reduced mobilities of SeF$_5^-$ and SeF$_6^-$ ions in SeF$_6$ were calculated using density functional theory and two-temperature theory, yielding values of $0.444 \pm 0.133$ and $0.430 \pm 0.129$ cm$^2$V$^{-1}$s$^{-1}$, respectively. The TPC geometry, featuring a cathode-focusing plane-anode structure and an 10,000-pixel readout array, was modeled with COMSOL to calculate the electric and weighting fields. Signal and background events were generated using BxDecay0 and Geant4. Garfield++ was used to simulate the transport of charge carriers and signal induction. The induced current was convolved with the transfer function to produce voltage signals, which were subsequently used to extract energy through amplitude. The 3D tracks are also reconstructed based on drift time differences and Breadth First search. To enhance signal background separation, six topological variables were extracted from the reconstructed tracks and used to define optimized selection criteria. The Boosted Decision Trees is used for a preliminary analysis. This simulation framework serves as a crucial tool for design optimization and sensitivity studies in the N$ν$DEx experiment.
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- preprint
- Language
- en
- Landing Page
- http://arxiv.org/abs/2508.13582
- https://arxiv.org/pdf/2508.13582
- OA Status
- green
- OpenAlex ID
- https://openalex.org/W4415249986
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https://openalex.org/W4415249986Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.48550/arxiv.2508.13582Digital Object Identifier
- Title
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Studies of simulation framework for NνDEx experimentWork title
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preprintOpenAlex work type
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enPrimary language
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2025Year of publication
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2025-08-19Full publication date if available
- Authors
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Tianyu Liang, H. Wang, Dongliang Zhang, C. Gao, Xiangming Sun, Feng Liu, Jun O. Liu, Chengui Lu, Yichen Yang, Chengxin Zhao, Hao Qiu, Kai ChenList of authors in order
- Landing page
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https://arxiv.org/abs/2508.13582Publisher landing page
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https://arxiv.org/pdf/2508.13582Direct link to full text PDF
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YesWhether a free full text is available
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0Total citation count in OpenAlex
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