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AXEL: High-pressure Xe gas TPC for BG-free [formula omitted] decay search.
- Source :
-
Nuclear Instruments & Methods in Physics Research Section A . Apr2020, Vol. 958, pN.PAG-N.PAG. 1p. - Publication Year :
- 2020
-
Abstract
- AXEL is a high-pressure xenon gas time projection chamber for neutrinoless double-beta decay (0 ν 2 β) search. The AXEL has a unique readout system called ELCC which has a cellular structure and photosensors to detect electroluminescence light produced by ionization electrons. We demonstrated the performance of the ELCC with a small prototype detector (AXEL-HP10L). The obtained energy resolution corresponds to 0. 82 − 1. 74 % (FWHM) at the 0 ν 2 β Q-value. We are constructing a new prototype (AXEL-HP180L) in order to study the energy resolution at the Q-value of 0 ν 2 β with a new design of ELCC with unit structure, newly developed electronics board, field-shaping electrodes, and Cockcroft–Walton-type high voltage power supply. For a future 1-ton scale large AXEL detector, we are developing new background-reduction techniques; topology identification with machine learning, positive-ion detection, and active-shield options. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01689002
- Volume :
- 958
- Database :
- Academic Search Index
- Journal :
- Nuclear Instruments & Methods in Physics Research Section A
- Publication Type :
- Academic Journal
- Accession number :
- 141845874
- Full Text :
- https://doi.org/10.1016/j.nima.2019.162803