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Neutron Electric Dipole Moment Workshop 2026

30 August 2026 to 4 September 2026
Mattli Antoniushaus, Morschach
Europe/Zurich timezone

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Session

Thu-1

3 Sept 2026, 09:00
Mattli Antoniushaus, Morschach

Mattli Antoniushaus, Morschach

Mattlistrasse 10 CH-6443 Morschach

Description

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

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  1. 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...

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  2. 33. Energy spectrum effect affecting neutron precession frequency in n2EDM
    Morgan Ferry (LPSC)
    03/09/2026, 09:25
    Oral Presentation

    This work is part of the n2EDM experiment located at Paul Scherrer Institut (PSI) in Switzerland. The nEDM measurement principle is based on the use of two precession chambers, one above the other, and separated by a high voltage electrode. Mercury vapour is used as a comagnetometer in order to measure the average magnetic field in the same volume as ultra cold neutrons (UCN). By measuring the...

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  3. 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...

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  4. 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
    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...

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