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Vertical time-of-flight spectroscopy of ultracold neutrons

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (2024)

Concept and strategy of SuperSUN: A new ultracold neutron converter

Estelle Chanel et al.

Summary: SuperSUN, developed by Institut Laue-Langevin (ILL), is a new source of ultracold neutrons (UCNs) that allows for long storage times and high in-situ UCN densities. It works by converting cold neutrons to UCNs using inelastic scattering in a vessel filled with superfluid helium-4. The SuperSUN source aims to deliver the highest possible UCN densities for external storage experiments, such as the measurement of the neutron's permanent electric dipole moment.

JOURNAL OF NEUTRON RESEARCH (2022)

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Article Physics, Nuclear

Fill and dump measurement of the neutron lifetime using an asymmetric magneto-gravitational trap

C. Cude-Woods et al.

Summary: In the past two decades, there have been new measurements and reanalysis of older measurements of the neutron lifetime. These measurements have revealed a significant discrepancy between different techniques used. In this paper, we introduce a new measurement method and present a result that is consistent with previous studies.

PHYSICAL REVIEW C (2022)

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Article Physics, Nuclear

Ultracold neutron storage in a bottle coated with the fluoropolymer CYTOP

Thomas Neulinger et al.

Summary: The suitability of the fluoropolymer CYTOP as a coating material for ultracold neutron (UCN) storage vessels was investigated. The neutron optical potential of CYTOP was measured, and UCN storage measurements were carried out in a CYTOP-coated aluminum bottle. The results showed that the storage time constant increased with decreasing temperature, and the neutron loss factor of CYTOP was estimated based on experimental data and simulations.

EUROPEAN PHYSICAL JOURNAL A (2022)

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Article Physics, Multidisciplinary