Neutron Electric Dipole Moment Workshop 2026

Session

Wed-2

2 Sept 2026, 11:05

Mattli Antoniushaus, Morschach

35. Light shift in mercury magnetometry

Guillaume Pignol (LPSC Grenoble)

02/09/2026, 11:05

Oral Presentation

The mercury co-magnetometer used in neutron EDM experiments relies on optical detection of the atomic spin precession. The probe light itself induces a shift of the precession frequency, proportional to the light power, know as the light shift.

This phenomenon was discovered by Cohen-Tannoudji in the early 1960s, who identified two distinct mechanisms: the virtual light shift, occurring...

17. Gradient Reconstruction using Cesium Magnetometers in n2EDM

Luz Sanchez-Real Zielniewicz (ETH Zürich)

02/09/2026, 11:45

Oral Presentation

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...

43. Validation of the Offline Blinding Algorithm for the n2EDM Experiment

Antoine Vezon

02/09/2026, 12:10

Oral Presentation

The extraction of the neutron Electric Dipole Moment (EDM) is a high-precision measurement obtained through multiple analytical steps. Since these steps involve human analysis, they may be unintentionally biased by the analysts' expectations. To mitigate this bias in the n2EDM experiment, a randomly generated false EDM value is injected into the dataset.

The blinding program uses this false...