The TUCAN collaboration is developing a next-generation spallation-based ultracold neutron (UCN) source at TRIUMF to supply high-density UCNs for fundamental physics experiments. The source's design leverages protons from TRIUMF's 500-MeV cyclotron and a large flux of cold neutrons created by a room-temperature heavy water moderator and a liquid deuterium shell, which then feed a superfluid...
Gravity Resonance Spectroscopy (GRS) investigates the energy states of Ultra-Cold Neutrons using an equivalent of Ramsey's method of separated oscillating fields. The manipulation of states is realized using mechanical oscillations instead of EM fields. This allows direct investigation of some "beyond-Riemann" gravity models as well as specific DM and DE candidates. An overview of current...
First part of my talk will be an update on status of the PULSTAR UCN source commissioning at NC State University. Last year we verified expected thermal neutron flux with a real source assembly and tested gamma shielding. This year we are assembling source for the final installation in the thermal column enclosure. A first test of UCN production has been approved by the reactor and...
In this talk the current status of the UCN source project at the FRM II will be presented. Expected values for UCN density and UCN flux will be discussed. Further steps to install the source and take it into operation will be shown.
The n2EDM experiment, which is currently being commissioned by the international nEDM collaboration at the Paul Scherrer Institute, aims to search for a non-vanishing electric dipole moment of the neutron with a sensitivity of 1x10^-27 e cm in the baseline setup. An overview of the experimental setup and the current status of the experiment will be presented.
Ultracold neutrons are indispensable probes for precision experiments in fundamental physics, providing unique opportunities to search for new physics beyond the Standard Model. This presentation will cover the principles and current status of two key experiments poised to utilize high-yield UCN sources: the TUCAN EDM experiment and the PENeLOPE neutron lifetime experiment.
The TUCAN EDM...
I will report on different measurements which were conducted over many years to understand operation and UCN output of the PSI UCN source.
This was done also with simulation analysis of neutron production and UCN transport.
Angular correlation measurements can provide high precision values for the axial coupling constant in neutron decay, a fundamental input in the determination of the beta decay rate predicted by the Standard Model of particle physics. Completed in 2018, the UCNA experiment was designed to utilize polarized ultracold neutrons to perform a high precision measurement of the beta asymmetry -- the...
