LABORATORI NAZIONALI DEL GRAN SASSO
The next-generation Enriched Xenon Observatory (nEXO) is a proposed experiment to search for neutrinoless double beta (0νββ) decay whose observation would imply lepton number violation and confirm the existence of elementary Majorana fermions. nEXO searches for 0νββ in 136Xe with a target half-life sensitivity of approximately 1028 years using 5×103 kg of isotopically enriched liquid-xenon in a time projection chamber. This improvement of two orders of magnitude in sensitivity over current limits is obtained by a significant increase of the 136Xe mass, the monolithic and homogeneous configuration of the active medium, and the multi-parameter measurements of the interactions enabled by the time projection chamber.
This seminar will introduce nEXO’s detector concept, present the R&D activities, and discuss the anticipated performance based upon demonstrated realizable background rates.
Lawrence Livermore National Laboratory