Neutron Electric Dipole Moment Workshop 2026

Session

Thu-1

3 Sept 2026, 09:00

Mattli Antoniushaus, Morschach

Conveners

Thu-1

• Michael Jentschel (Institut Laue Langevin)

Description

detection methods and detectors for ultracold neutrons, high voltage generation, high voltage measurement and control

19. Technical Requirements for Systematic Control and Sensitivity Reach of the TUCAN EDM Experiment

Noah Yazdandoost (TRIUMF)

03/09/2026, 09:00

Oral Presentation

The world-leading high-density UCN source developed for the TUCAN EDM experiment provides the statistical foundation for reaching improved sensitivity to the neutron electric dipole moment. With increased UCN density, the TUCAN collaboration aims to reach a statistical sensitivity at the $\sim 10^{-27}\ e\,\mathrm{cm}$ level in an initial measurement campaign. To realize this goal, the...

46. LANL nEDM Double Arm Neutron Simultaneous Spin Analyzers

Katherine Zine (University of Illinois Urbana-Champaign)

03/09/2026, 09:25

Oral Presentation

Two double armed spin analyzers (DSAs) will be used for the Neutron Electric Dipole (nEDM) experiment at Los Alamos National Laboratory (LANL). These DSAs are meant to count the populations of high and low field seeking neutrons at the end of the experiment in order to calculate whether an nEDM is seen. Each arm will count a different population of neutron (i.e. high-field seeking vs low-field...

42. Reconstructing in-situ energy spectra from superfluid helium UCN sources

Thomas Hepworth

03/09/2026, 09:50

Oral Presentation

UCN data is often analyzed by empirical models and fit parameters. This limits interpretability of measurements, projecting away information of well understood particle level dynamics. We present a physical inference on UCN storage and accumulation data from the SuperSUN source at the ILL, allowing for reconstruction of in-situ total energy spectra and associated physics. The model will be...

13. First characterization of the ultracold-neutron velocity spectrum from the TUCAN source

Kelin Qiao (The University of Osaka / Research Center for Nuclear Physics (RCNP))

03/09/2026, 10:15

1

Oral Presentation

A spallation-driven ultracold neutron (UCN) source developed by the TRIUMF Ultra Cold Advanced Neutron (TUCAN) collaboration has recently been commissioned. Reliable simulations and optimization of the setup require a good understanding of the velocity spectrum of UCNs produced in the source. To address this, a vertical time-of-flight (ToF) spectrometer has been developed and applied to...