Séminaires
Neutron Electric Dipole Moment search with a superthermal spallation Ultracold Neutron source at RCNP/TRIUMF
par
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Europe/Paris
Amphiteatre (CPPM)
Amphiteatre
CPPM
Description
The origin of the baryon asymmetry of the universe (BAU) is currently an active field of research. A non-zero neutron electric dipole moment (nEDM) would violate both parity and time reversal symmetry. Thus, a measurement of the nEDM will help to understand the source of BAU according to the Sakharov conditions. A new experiment to search for the nEDM is under development at RCNP, Japan (co-funding: KEK/RCNP) and is planned for installation at TRIUMF, Canada. The experiment is using ultra-cold neutrons (UCN) produced in superfluid helium. The goal of the experiment is to improve the current upper limit of nEDM of dn<2.9×10−26e-cm by one order of magnitude at RCNP and two orders of magnitude at TRIUMF. An overview of the current KEK/RCNP UCN source, new developments for nEDM measurement and future plans for TRIUMF will be presented.