The NUMEN Project: An Update of the Facility Toward the Future Experimental Campaigns
Résumé
The goal of NUMEN project is to access experimentally driven information on Nuclear Matrix Elements (NME) involved in the neutrinoless double beta decay (0νββ) by accurate measurements of the cross sections of heavy-ion induced double charge-exchange reactions. In particular, the (18O, 18Ne) and (20Ne, 20O) reactions are adopted as tools for β+β+ and β-β- decays, respectively. The experiments are performed at INFN - Laboratory Nazionali del Sud (LNS) in Catania using the Superconducting Cyclotron to accelerate the beams and the MAGNEX magnetic spectrometer to detect the reaction products. The measured cross sections are very low, limiting the present exploration to few selected isotopes of interest in the context of typically low-yield experimental runs. In order to make feasible a systematic study of all the candidate nuclei, a major upgrade of the LNS facility is foreseen to increase the experimental yield by more than two orders of magnitude. To this purpose, frontier technologies are being developed for both the accelerator and the detection systems. An update description of the NUMEN project is presented here, focusing on recent achievements from the R&D activity.
Mots clés
Double Beta Decay
nuclear matrix elements
Double charge exchange
Heavy ion multidetector
MAGNEX spectrometer
activity report
double-beta decay: (0neutrino)
cross section: measured
charge exchange
heavy ion: scattering
magnetic spectrometer
cyclotron
upgrade
accelerator: technology
detector: technology
detector: design
accelerator: design
Origine | Fichiers éditeurs autorisés sur une archive ouverte |
---|