Speaker
Description
The TUCAN(TRIUMF UltraCold Advanced Neutron) collaboration aims to measure the neutron electric dipole moment (nEDM) with the world's highest sensitivity, $10^{-27}\,e\cdot\mathrm{cm}$, which is an order of magnitude better than the current best sensitivity. A nonzero nEDM would shed light on new sources of Charge-Parity violation beyond the Standard Model. A nonzero nEDM has the potential to answer one of the biggest mysteries in the universe, which is the matter-antimatter asymmetry problem, and this also leads us to understand why we exist in the universe. At TRIUMF, the experiment utilizes Liquid Deuterium (LD2) and Heavy water (D2O) as moderators and superfluid Helium (He-II) as a converter to produce a high ultracold neutron flux, and measures the tiny shift in neutron spin precession that indicates nonzero nEDM by precisely controlling magnetic and electric fields. To improve the sensitivity, various quantities have been analyzed, such as the neutron storage lifetime of our UCN guide, and many components, such as a Y switch that controls the direction of UCNs, have been developed to efficiently transport UCNs. Furthermore, a Monte Carlo simulation called PENTrack is used to understand the UCN behaviour in the system. In this presentation, I will introduce the purpose of the TUCAN nEDM experiment, the data analysis and simulation methods used to study the UCN transport and storage properties, and the development of the Y switch.
| Keyword-1 | Neutron Electric Dipole Moment |
|---|---|
| Keyword-2 | Ultracold Neutron |