6–8 Aug 2025
PSI
Europe/Zurich timezone

An optically pumped magnetometer array used for a fundamental physics experiment

7 Aug 2025, 16:30
5m
WHGA/001 - Auditorium (PSI)

WHGA/001 - Auditorium

PSI

Speaker

Lea Segner (ETH Zürich)

Description

The n2EDM experiment at the Paul Scherrer Institute is a fundamental particle physics experiment which aims to measure the neutron electric dipole moment with a sensitivity below $1 \times 10^{-27}$ e·cm. Achieving this level of sensitivity requires exact control of magnetic field uniformity to reduce systematic effects. To this end, an array of 112 optically pumped cesium vapor magnetometers using a free alignment precession measurement principle will be deployed.
This array will provide real-time measurements of magnetic field gradients, enabling the control and reduction of systematic uncertainties arising from magnetic field non-uniformities. In this contribution, the design, performance, and integration of this system into the experimental setup will be presented.

Authors

Judith van Keirsbilck (KU Leuven) Lea Segner (ETH Zürich) Luz Sanchez-Real Zielniewicz (ETH Zurich)

Co-authors

Efrain Patrick Segarra (PSI - Paul Scherrer Institut) Georg Bison (PSI - Paul Scherrer Institut) Klaus Stefan Kirch (PSI - Paul Scherrer Institut) Victoria Kletzl (PSI) Vira Bondar (ETH Zürich)

Presentation materials

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