Speaker
Description
A precise determination of the magnetic field gradients inside the n2EDM apparatus is essential for controlling systematic effects in the neutron EDM measurement. The experiment is equipped with an array of optically pumped cesium magnetometers (CsM), which continuously measure the magnetic field surrounding the precession chamber. We present the gradient reconstruction method developed using the CsM array; the magnetic field measured by each sensor is fitted with a low-order polynomial expansion to reconstruct the main magnetic field gradients on a cycle-by-cycle basis. We discuss how the reconstructed gradients respond to different stages of the experimental cycle, including RF pulses and high-voltage operation, and present a live monitoring tool developed to display the reconstructed gradients together with other CsM observables during data taking.
This work is part of the ongoing commissioning of the n2EDM magnetic field monitoring system and aims to provide reliable gradient reconstruction for future physics data taking.