Speaker
Description
The n2EDM experiment at the Paul Scherrer Institut aims to improve the sensitivity of the measurement of the neutron electric dipole moment (nEDM) by a factor of ten relative to the previous phase of the project. The statistical uncertainty on the extracted nEDM decreases with increasing neutron polarization. Our goal was to conserve the high neutron polarization after the 5 T polarizer magnet all along the path in the apparatus with an efficiency greater than 99%. To rotate the spin of the ultracold neutrons adiabatically following the magnetic field vector along the trajectory, spin transport coils (STCs) were installed. We present the characterization of the magnetic fields produced by these STCs, and the calculation of the spin transport efficiency. The latter meets our goal value which makes the STCs ready for data taking.