PoS - Proceedings of Science
Volume 441 - XVIII International Conference on Topics in Astroparticle and Underground Physics (TAUP2023) - Neutrino Physics and Astrophysics
A New $^{82}$Se detector for Neutrinoless Double Beta Decay Searches
E. Ciuffoli*  on behalf of the NvDEx Collaboration
Full text: pdf
Pre-published on: January 24, 2024
Published on: March 22, 2024
N$\nu$DEx (No neutrino Double-beta-decay Experiment) is a new Se-based TPC detector that will be placed in China Jinping Underground Laboratory (CJPL) looking for neutrinoless double beta decay. N$\nu$DEx-100, the experiment phase with 100 kg of SeF$_6$ gas, is currently being built and planned to be completed with installation at CJPL around the year 2025. I will present the current status of the experiments and the perspectives for future developments.
SeF$_6$ has very high electronegativity; for this reason, the electrons will recombine very quickly and the particles traveling toward the readout plane will be negative ions. A new kind of sensor, Topmetal-S, has been developed: it will allow us to read out the drifted charge and reconstruct the energy of the event with great precision even without physical amplification like electron avalanche.
The main advantages offered by N$\nu$DEx are two: firstly, the large rock overburden would decrease significantly the cosmogenic muon background. Second, the high Q-value of $^{82}$Se ($\sim$3 MeV) will place the Region Of Interest above the energy range of the large majority of the environmental gamma's, allowing us to achieve an incredibly low-background environment, which ensures excellent perspectives for scalability.
DOI: https://doi.org/10.22323/1.441.0166
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.