16–21 Oct 2022
PSI
Europe/Zurich timezone

New Magnetically Shielded Room for $^3$He/$^{129}$Xe co-magnetometer experiments

18 Oct 2022, 16:51
1m
WHGA / Foyer and Tent (PSI)

WHGA / Foyer and Tent

PSI

Speaker

Ulrich Schmidt (Physikalisches Institut der Uni Heidelberg)

Description

The $^3$He/$^{129}$Xe co-magnetometer is a high precision experiment that can address a variety of fundamental questions including the measurement of the \textit{CP}-violating permanent electric dipole moment (EDM) of the $^{129}$Xe atom, looking for a violation of Lorentz Invariance, and searching for a spin-dependent \textit{P}- and \textit{CP}-violating nucleon-nucleon interaction mediated by Axions or axion-like particles. Next level $^3$He/$^{129}$Xe co-magnetometer experiments require improved magnetic conditions. Here, we report on the performance of a new Magnetically Shielded Room (MSR) consisting of three layers of Mu-metal with a thickness of 3~mm each, and one additional highly conductive copper-coated aluminum layer with a thickness of 10~mm. The MSR has a cubical shape with an accessible interior volume with an edge length of 2560~mm. An optimized degaussing (magnetic equilibration) procedure, and shielding factor and residual magnetic field measurements will be presented.

Primary authors

Mr Benjamin Brauneis (Physikalisches Institut Uni Heidelberg) Fabian Allmendinger (Physikalisches Institut) Ulrich Schmidt (Physikalisches Institut der Uni Heidelberg) Werner Heil (Institute of Physics)

Presentation materials