Novel concept for a neutron electric charge measurement using a Talbot-Lau interferometer at a pulsed source

Piegsa, F. M.

doi:10.1103/physrevc.98.045503

Cited by 5 publications

(4 citation statements)

References 64 publications

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“…Recently suggested particle physics experiments using beams of slow neutrons include: 5 -In-beam searches for a permanent neutron electric dipole moment (nEDM) [1,155,156], and searches for new fundamental forces [157]. These kinds of experiments profit linearly from the interaction time t of the neutron in the apparatus.…”

Section: Beam Experimentsmentioning

confidence: 99%

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HighNESS conceptual design report: Volume I

Santoro,

Abou El Kheir,

Acharya

et al. 2024

JNR

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The European Spallation Source, currently under construction in Lund, Sweden, is a multidisciplinary international laboratory. Once completed to full specifications, it will operate the world’s most powerful pulsed neutron source. Supported by a 3 million Euro Research and Innovation Action within the EU Horizon 2020 program, a design study (HighNESS) has been completed to develop a second neutron source located below the spallation target. Compared to the first source, designed for high cold and thermal brightness, the new source has been optimized to deliver higher intensity, and a shift to longer wavelengths in the spectral regions of cold (CN, 2–20 Å), very cold (VCN, 10–120 Å), and ultracold (UCN, >500 Å) neutrons. The second source comprises a large liquid deuterium moderator designed to produce CN and support secondary VCN and UCN sources. Various options have been explored in the proposed designs, aiming for world-leading performance in neutronics. These designs will enable the development of several new instrument concepts and facilitate the implementation of a high-sensitivity neutron-antineutron oscillation experiment (NNBAR). This document serves as the Conceptual Design Report for the HighNESS project, representing its final deliverable.

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Section: Beam Experimentsmentioning

confidence: 99%

“…7 With regard to the latter, especially the field of holographic gratings, as described in [107], made significant progress. -Improvement of the current limit on the neutron charge [21] with a Talbot-Lau interferometer [156].…”

Section: Wave-optical Experimentsmentioning

confidence: 99%

HighNESS conceptual design report: Volume I

Santoro,

Abou El Kheir,

Acharya

et al. 2024

JNR

View full text Add to dashboard Cite

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“…Examples are the beam polarisation and transmission by a spin filter cell which can be used for precise polarimetry [6] or the induced magnetic field ∝ v×E in the rest frame of a neutron moving in an electric field which is relevant for measurements of the neutron electric dipole moment (EDM) [7]. In a novel neutron interferometric concept for a precision measurement of the electric charge of the neutron the timing information is used to select neutrons of specific velocities [8]. Furthermore, parameters of neutron-velocity dependent optical elements can be varied to fit the neutrons arriving at a certain moment (time- * e-mail: soldner@ill.fr dependent neutron optics).…”

Section: Introductionmentioning

confidence: 99%

ANNI – A pulsed cold neutron beam facility for particle physics at the ESS

et al. 2019

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Pulsed beams have tremendous advantages for precision experiments with cold neutrons. In order to minimise and measure systematic effects, they are used at continuous sources in spite of the related substantial decrease in intensity. At the European Spallation Source ESS these experiments will profit from the pulse structure of the source and its 50 times higher peak brightness compared to the most intense reactor facilities, making novel concepts feasible. Therefore, the cold neutron beam facility for particle physics ANNI was proposed as part of the ESS instrument suite. The proposed design has been re-optimised to take into account the present ESS cold moderator layout. We present design considerations, the optimised instrument parameters and performance, and expected gain factors for several reference experiments.

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“…A decade later the phase shift induced by the magnetic potential was measured by means of a grating interferometer in combination with polarized neutrons (pnGI) 18 . Even a concept to address fundamental physics problems such as the measurement of the neutron electric charge neutrality employing a Talbot-Lau interferometer in a highintensity pulsed neutron beam has been proposed 19 . However, most of the investigations carried out with nGI have mainly focused on the small-angle scattering information provided by the DFI 20 .…”

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confidence: 99%

Characterization of oriented microstructures through anisotropic small-angle scattering by 2D neutron dark-field imaging

et al. 2020

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Within neutron imaging, different methods have been developed with the aim to go beyond the conventional contrast modalities, such as grating interferometry. Existing grating interferometers are sensitive to scattering in a single direction only, and thus investigations of anisotropic scattering structures imply the need for a circular scan of either the sample or the gratings. Here we propose an approach that allows assessment of anisotropic scattering in a single acquisition mode and to broaden the range of the investigation with respect to the probed correlation lengths. This is achieved by a far-field grating interferometer with a tailored 2D-design. The combination of a directional neutron dark-field imaging approach with a scan of the sample to detector distance yields to the characterization of the local 2D real-space correlation functions of a strongly oriented sample analogous to conventional small-angle scattering. Our results usher in quantitative and spatially resolved investigations of anisotropic and strongly oriented systems beyond current capabilities.

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Novel concept for a neutron electric charge measurement using a Talbot-Lau interferometer at a pulsed source

Cited by 5 publications

References 64 publications

HighNESS conceptual design report: Volume I

HighNESS conceptual design report: Volume I

ANNI – A pulsed cold neutron beam facility for particle physics at the ESS

Characterization of oriented microstructures through anisotropic small-angle scattering by 2D neutron dark-field imaging

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