Neutron Electric Dipole Moment Workshop 2026

Session

Mo-4

31 Aug 2026, 16:20

Mattli Antoniushaus, Morschach

Conveners

Mo-4

• Ricardo Alarcon (Arizona State University)

Description

Theory overview, current status and possible beyond standard model impact, Overview Experimental techniques, beam nEDM measurements,

36. A Cesium Magnetometry Array for the n2EDM experiment

Lea Segner

31/08/2026, 16:20

Oral Presentation

The dominant systematic in the n2EDM experiment is the false EDM effect. Magnetic field inhomogeneities in the presence of an electric field generate an electric-field correlated shift in the measured frequencies, effectively mimicking a "false" electric dipole. To correct for this effect, a dedicated array of optically pumped Cesium vapor magnetometers is used to perform online measurements...

20. Direct in-situ measurement of the vector light shift in a Cs NMOR-based OPM

Wolfgang Klassen (University of British Columbia)

31/08/2026, 16:45

Oral Presentation

The TUCAN collaboration aims to provide a world-class measurement of the neutron EDM, with an eventual precision goal of $1\times10^{-27}\ e\cdot$cm. In order to achieve this target sensitivity the magnetic environment in the experimental region must be very carefully controlled and monitored. To this end TUCAN has developed a suite of Cs based optically pumped magnetometers with the primary...

1. Modelling Magnetic Fieldmaps

Christopher Crawford (University of Kentucky)

31/08/2026, 17:10

Oral Presentation

Interpolation is necessary for simulating dynamics in measured magnetic field maps and can increase efficiency and/or accuracy with computed fields, example, finite element calculations. Harmonic expansion has the benefit of constraining the curl and divergence, but work best in a compact volume far from sources. An adaptation of this expansion is better suited for irregular volumes while...

7. Measurement of the cold-neutron flux for the TUCAN source

Ryuto Fujitani (Kyoto University)

31/08/2026, 17:35

Oral Presentation

The TRIUMF UltraCold Advanced Neutron (TUCAN) project has constructed a high-intensity ultracold-neutron source at TRIUMF for a neutron electric dipole moment experiment. The UCN production utilizes the superthermal method in which inelastic scattering in superfluid helium converts cold neutrons into ultracold neutrons. One of the factors critical for the performance of the UCN source is the...