Design and construction of the multiplexing cold neutron spectrometer BOYA with double-column Rowland focusing analyzers
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arXiv
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| Auteurs principaux: | , , , , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866915387337080832 |
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| author | Wang, Jinchen Xu, Daye Liu, Juanjuan Luo, Wei Cheng, Peng Zhang, Hongxia Bao, Wei |
| author_facet | Wang, Jinchen Xu, Daye Liu, Juanjuan Luo, Wei Cheng, Peng Zhang, Hongxia Bao, Wei |
| contents | Developing neutron spectrometers with higher counting efficiency has been an essential pursuit in neutron instrumentation. In this work, we present BOYA, a multiplexing cold neutron spectrometers designed and implemented at the China Advanced Research Reactor. Equipped with 34 angular analyzing channels spanning 119°, each containing 5 inelastic channels and 1 diffraction channel, BOYA enhances the measurement efficiency by two orders of magnitude over a traditional triple-axis spectrometer. To optimize both intensity and energy resolution, innovative double-column Rowland focusing analyzers have been developed. By filling the crystal gaps in the traditional Rowland focusing geometry, our design enhances the neutron beam coverage without introducing appreciable double-scattering. Our commissioning results on vanadium and MnWO4 have confirmed the success of the design, establishing BOYA as a successful multiplexing instrument for neutron spectroscopy. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_01143 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Design and construction of the multiplexing cold neutron spectrometer BOYA with double-column Rowland focusing analyzers Wang, Jinchen Xu, Daye Liu, Juanjuan Luo, Wei Cheng, Peng Zhang, Hongxia Bao, Wei Instrumentation and Detectors Strongly Correlated Electrons Developing neutron spectrometers with higher counting efficiency has been an essential pursuit in neutron instrumentation. In this work, we present BOYA, a multiplexing cold neutron spectrometers designed and implemented at the China Advanced Research Reactor. Equipped with 34 angular analyzing channels spanning 119°, each containing 5 inelastic channels and 1 diffraction channel, BOYA enhances the measurement efficiency by two orders of magnitude over a traditional triple-axis spectrometer. To optimize both intensity and energy resolution, innovative double-column Rowland focusing analyzers have been developed. By filling the crystal gaps in the traditional Rowland focusing geometry, our design enhances the neutron beam coverage without introducing appreciable double-scattering. Our commissioning results on vanadium and MnWO4 have confirmed the success of the design, establishing BOYA as a successful multiplexing instrument for neutron spectroscopy. |
| title | Design and construction of the multiplexing cold neutron spectrometer BOYA with double-column Rowland focusing analyzers |
| topic | Instrumentation and Detectors Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2501.01143 |