Proposal for a new spectrometer at ESS: Njord and Remora
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arXiv
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| Auteurs principaux: | , , , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866911588746788864 |
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| author | Fogh, E. Amin, N. L. Tucker, G. S. Aouane, M. Georgii, R. Voigt, J. Toft-Petersen, R. |
| author_facet | Fogh, E. Amin, N. L. Tucker, G. S. Aouane, M. Georgii, R. Voigt, J. Toft-Petersen, R. |
| contents | Many of the most interesting scientific subjects are also the hardest to study with neutrons. Metal-organic frameworks, organic superconductors, quantum magnets, pressure-tuned materials, are systems where the relevant signals are weak, the samples are tiny, or the experiments need extreme sample environments such as pressure cells and high-field cryomagnets. Existing instruments often run into practical limits before the science is exhausted. For some questions the samples are simply too small; for others, the signal is buried in background or the required measurement time becomes prohibitive. This is both a scientific opportunity and a challenge for the European neutron scattering community.
We present Njord and Remora as a paired instrument concept for the European Spallation Source (ESS). The proposal focuses on two linked problems: important science cases are being limited by neutron flux and sample geometry, and the community also needs more beamtime. Njord addresses the first by pushing the available brightness into a tightly focused beam, while Remora uses the remaining spectral window to add a complementary spectrometer on the same beamport. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_11383 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Proposal for a new spectrometer at ESS: Njord and Remora Fogh, E. Amin, N. L. Tucker, G. S. Aouane, M. Georgii, R. Voigt, J. Toft-Petersen, R. Instrumentation and Detectors Many of the most interesting scientific subjects are also the hardest to study with neutrons. Metal-organic frameworks, organic superconductors, quantum magnets, pressure-tuned materials, are systems where the relevant signals are weak, the samples are tiny, or the experiments need extreme sample environments such as pressure cells and high-field cryomagnets. Existing instruments often run into practical limits before the science is exhausted. For some questions the samples are simply too small; for others, the signal is buried in background or the required measurement time becomes prohibitive. This is both a scientific opportunity and a challenge for the European neutron scattering community. We present Njord and Remora as a paired instrument concept for the European Spallation Source (ESS). The proposal focuses on two linked problems: important science cases are being limited by neutron flux and sample geometry, and the community also needs more beamtime. Njord addresses the first by pushing the available brightness into a tightly focused beam, while Remora uses the remaining spectral window to add a complementary spectrometer on the same beamport. |
| title | Proposal for a new spectrometer at ESS: Njord and Remora |
| topic | Instrumentation and Detectors |
| url | https://arxiv.org/abs/2604.11383 |