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The time-focusing neutron spectrometer SHARP.

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Title: The time-focusing neutron spectrometer SHARP.
Authors: Zanotti, J.-M.1 (AUTHOR) jean-marc.zanotti@cea.fr, Rodrigues, S.1 (AUTHOR), Lavie, P.1 (AUTHOR), Permingeat, P.1 (AUTHOR), Homatter, B.1 (AUTHOR), Berrod, Q.1,2 (AUTHOR)
Source: Nuclear Instruments & Methods in Physics Research Section A. Apr2026, Vol. 1084, pN.PAG-N.PAG. 1p.
Subjects: Neutron spectrometers, Condensed matter, Time-of-flight measurements, Solid state physics, Spectrometry, Diffusion kinetics
Abstract: SHARP (Spectromètre Hybride Alpes Région Parisienne) is a new-generation time-of-flight neutron spectrometer installed at the Institut Laue-Langevin (ILL). It is designed to investigate dynamical processes in condensed matter with high energy resolution and broad experimental versatility. Developed as a complete upgrade of the former IN6 instrument, SHARP addresses key scientific challenges in soft matter, biology, energy materials, and solid-state physics, where precise measurements of atomic and molecular motions are essential. The main design objective is to achieve a higher counting rate while maintaining the IN6 strong neutron flux, by providing wide angular and energy coverage through multiple take-off angle geometries. Notable features include a fully vacuum-compatible secondary spectrometer, a retractable sample window allowing the detector tank to remain under vacuum while enabling experiments requiring controlled sample environments, and a bank of 240 position-sensitive 3He detectors operating at 5 bar, ensuring enhanced spectral spatial definition. Compared to IN6, SHARP delivers a twofold increase in counting rate in the elastic region and a lower background. This paper outlines the scientific motivations behind the SHARP project, describes the main instrumental innovations, and demonstrates the instrument's performance through initial scientific results on molecular diffusion in zeolite, determinant of the selectivity of these materials for use in membrane-based gas separations. [ABSTRACT FROM AUTHOR]
Copyright of Nuclear Instruments & Methods in Physics Research Section A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 190934104
AccessLevel: 6
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  Data: The time-focusing neutron spectrometer SHARP.
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  Data: <searchLink fieldCode="JN" term="%22Nuclear+Instruments+%26+Methods+in+Physics+Research+Section+A%22">Nuclear Instruments & Methods in Physics Research Section A</searchLink>. Apr2026, Vol. 1084, pN.PAG-N.PAG. 1p.
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  Data: SHARP (Spectromètre Hybride Alpes Région Parisienne) is a new-generation time-of-flight neutron spectrometer installed at the Institut Laue-Langevin (ILL). It is designed to investigate dynamical processes in condensed matter with high energy resolution and broad experimental versatility. Developed as a complete upgrade of the former IN6 instrument, SHARP addresses key scientific challenges in soft matter, biology, energy materials, and solid-state physics, where precise measurements of atomic and molecular motions are essential. The main design objective is to achieve a higher counting rate while maintaining the IN6 strong neutron flux, by providing wide angular and energy coverage through multiple take-off angle geometries. Notable features include a fully vacuum-compatible secondary spectrometer, a retractable sample window allowing the detector tank to remain under vacuum while enabling experiments requiring controlled sample environments, and a bank of 240 position-sensitive 3He detectors operating at 5 bar, ensuring enhanced spectral spatial definition. Compared to IN6, SHARP delivers a twofold increase in counting rate in the elastic region and a lower background. This paper outlines the scientific motivations behind the SHARP project, describes the main instrumental innovations, and demonstrates the instrument's performance through initial scientific results on molecular diffusion in zeolite, determinant of the selectivity of these materials for use in membrane-based gas separations. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Nuclear Instruments & Methods in Physics Research Section A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.nima.2025.171196
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      – SubjectFull: Condensed matter
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      – SubjectFull: Time-of-flight measurements
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      – SubjectFull: Solid state physics
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      – SubjectFull: Spectrometry
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      – SubjectFull: Diffusion kinetics
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      – TitleFull: The time-focusing neutron spectrometer SHARP.
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              Text: Apr2026
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              Y: 2026
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