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arxiv: 2605.09980 · v1 · submitted 2026-05-11 · ⚛️ physics.app-ph · physics.ins-det

Recognition: 1 theorem link

· Lean Theorem

Physical design of cold neutron direct geometry inelastic spectrometer at China Spallation Neutron Source

Qian Zhao, Songwen Xiao, Wei Luo, Xiaowen Zhang, Xin Tong, Yu Feng, Zecong Qin, Zhuang Xu

Pith reviewed 2026-05-12 04:03 UTC · model grok-4.3

classification ⚛️ physics.app-ph physics.ins-det
keywords cold neutron inelastic scatteringdirect geometry spectrometertime-of-flightsupermirror neutron guideschopper optimizationenergy resolutionChina Spallation Neutron Source
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0 comments X

The pith

CNIS at CSNS reaches ~1% energy resolution in high-resolution mode via optimized flight paths and choppers.

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The paper presents the physical design of the Cold-Neutron Inelastic Spectrometer, a direct-geometry time-of-flight instrument for the China Spallation Neutron Source. It integrates long flight paths with bent supermirror guides and elliptical focusing to improve cold-neutron delivery while cutting high-energy background. A multi-disk chopper suite enables flexible pulse shaping, band selection, and multi-Ei operation. Modular additions such as an interchangeable high-focusing insert and a vacuum airbox further boost signal-to-noise. These choices together deliver strong routine resolution and allow a dedicated configuration to reach approximately 1 percent energy resolution.

Core claim

Through combined flight-path and chopper optimization, CNIS achieves excellent routine-mode energy resolution and can reach approximately ~1% in a dedicated high-resolution configuration. The instrument is built around bent supermirror guides, elliptical-focusing geometry, and a flexible chopper system that together suppress background and deliver cold neutrons efficiently to the sample for studies of low-energy lattice and magnetic excitations.

What carries the argument

The bent supermirror guides combined with elliptical-focusing geometry and a multi-disk chopper suite for pulse shaping, band selection, and monochromatization.

If this is right

  • Routine operation will support detailed mapping of low-energy excitations in lattice and magnetic systems.
  • Multi-Ei capability will let users collect data at several incident energies in a single run without changing hardware.
  • The radial collimator and vacuum airbox will reduce background and simplify integration with sample environments.
  • Interchangeable high-focusing guide inserts will allow switching between standard and high-resolution modes.
  • User operation is scheduled to begin in 2029.

Where Pith is reading between the lines

These are editorial extensions of the paper, not claims the author makes directly.

  • Similar guide-plus-chopper optimization could be applied to upgrade resolution on existing cold-neutron spectrometers at other spallation sources.
  • If background remains as low as modeled, the design may open new parameter space for studying weak magnetic signals in quantum materials.
  • The modular airbox approach might reduce setup time for temperature or field experiments across multiple instruments.
  • High-resolution mode could be tested first with a standard vanadium sample to confirm the 1% target before full user program starts.

Load-bearing premise

The quoted resolution targets will hold in practice only if neutron transport simulations of the guides, focusing geometry, and chopper timing match real performance after construction.

What would settle it

After the instrument is built, measure the actual energy resolution on a known standard sample in the dedicated high-resolution configuration and compare the result directly to the simulated ~1% value.

Figures

Figures reproduced from arXiv: 2605.09980 by Qian Zhao, Songwen Xiao, Wei Luo, Xiaowen Zhang, Xin Tong, Yu Feng, Zecong Qin, Zhuang Xu.

Figure 1
Figure 1. Figure 1: FIG. 1 [PITH_FULL_IMAGE:figures/full_fig_p001_1.png] view at source ↗
Figure 2
Figure 2. Figure 2: FIG. 2 [PITH_FULL_IMAGE:figures/full_fig_p002_2.png] view at source ↗
Figure 3
Figure 3. Figure 3: FIG. 3 [PITH_FULL_IMAGE:figures/full_fig_p002_3.png] view at source ↗
Figure 4
Figure 4. Figure 4: FIG. 4 [PITH_FULL_IMAGE:figures/full_fig_p004_4.png] view at source ↗
Figure 5
Figure 5. Figure 5: (a) presents the wavelength distribution of neutron beam flux at the sample position as simulated by McStas. It can be observed that both the full elliptical design and the dou￾ble half-elliptical design exhibit similar performances. The designs achieve their maximum neutron beam flux intensity at 2.7 Å (11.2 meV), and the distribution aligns with the exper￾imental requirements of the cold neutron inelasti… view at source ↗
Figure 6
Figure 6. Figure 6: FIG. 6 [PITH_FULL_IMAGE:figures/full_fig_p005_6.png] view at source ↗
Figure 8
Figure 8. Figure 8: FIG. 8 [PITH_FULL_IMAGE:figures/full_fig_p006_8.png] view at source ↗
Figure 7
Figure 7. Figure 7: FIG. 7 [PITH_FULL_IMAGE:figures/full_fig_p006_7.png] view at source ↗
Figure 8
Figure 8. Figure 8: fig. 8. The presented results should be regarded as preliminary [PITH_FULL_IMAGE:figures/full_fig_p007_8.png] view at source ↗
Figure 9
Figure 9. Figure 9: FIG. 9 [PITH_FULL_IMAGE:figures/full_fig_p007_9.png] view at source ↗
read the original abstract

The Cold-Neutron Inelastic Spectrometer (CNIS) is a direct-geometry, time-of-flight instrument designed for China Spallation Neutron Source (CSNS) and optimized to probe low-energy lattice and magnetic excitations. The instrument integrates a long flight path with bent supermirror guides and an elliptical-focusing geometry to suppress high-energy background while improving cold-neutron delivery to the sample. A flexible multi-disk chopper suite provides pulse shaping, band selection and monochromatization, enabling multi-$E_\textrm{i}$ operation. Modular features, including an interchangeable high-focusing guide insert, radial collimation and a vacuum ``airbox'' for simplified sample-environment integration, enhance signal-to-noise and operational versatility. Through combined flight-path and chopper optimization, CNIS achieves excellent routine-mode energy resolution and can reach approximately $\sim 1\%$ in a dedicated high-resolution configuration. CNIS is planned to commence user operation in 2029, offering a highly flexible platform for cold-neutron inelastic scattering studies.

Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, simulated authors' rebuttal, and a circularity audit. Tearing a paper down is the easy half of reading it; the pith above is the substance, this is the friction.

Referee Report

2 major / 3 minor

Summary. The manuscript presents the physical design of the Cold-Neutron Inelastic Spectrometer (CNIS), a direct-geometry time-of-flight instrument planned for the China Spallation Neutron Source (CSNS). It describes a long flight path with bent supermirror guides and elliptical focusing to improve cold-neutron delivery and suppress background, a multi-disk chopper suite for pulse shaping, band selection, and multi-Ei operation, plus modular elements such as an interchangeable high-focusing guide insert, radial collimation, and a vacuum airbox. Through flight-path and chopper optimization the design targets excellent routine-mode energy resolution together with approximately 1% resolution in a dedicated high-resolution configuration, with user operations scheduled to begin in 2029.

Significance. If the neutron-transport simulations and optimization results hold after construction, CNIS would provide a flexible, high-performance platform for cold-neutron inelastic scattering at CSNS, enabling studies of low-energy lattice and magnetic excitations with competitive resolution and background control. The proposal applies established neutron-optics principles to the specific characteristics of the CSNS source and incorporates practical modular features that enhance operational versatility.

major comments (2)
  1. [Abstract and performance-optimization section] The central performance claims (routine-mode resolution and ~1% high-resolution mode) are stated in the abstract and the optimization discussion but rest on unshown neutron-transport simulations; no quantitative results, parameter tables, error budgets, or direct comparisons to existing instruments are supplied to substantiate the targets. This is load-bearing for the paper's primary assertions about instrument capability.
  2. [§3 (Instrument layout and guide design)] The description of the bent supermirror guides and elliptical-focusing geometry (likely §3) is qualitative; without explicit simulation outputs for neutron flux, divergence, or background suppression factors, the claimed improvements in signal-to-noise cannot be independently evaluated.
minor comments (3)
  1. [Abstract] The abstract refers to 'excellent routine-mode energy resolution' without quoting a numerical range or FWHM value, which would clarify the performance baseline for readers.
  2. [Figures] Figure captions for the instrument layout and chopper suite would benefit from additional detail identifying labeled components and their functions.
  3. [Design-parameters section] A short table summarizing key design parameters (flight-path length, chopper frequencies, guide m-values, etc.) would improve readability and allow direct comparison with other spectrometers.

Simulated Author's Rebuttal

2 responses · 0 unresolved

We thank the referee for their thorough review and constructive feedback on the CNIS design manuscript. The comments correctly identify areas where additional quantitative detail from our simulations would strengthen the paper. We address each major comment below and will revise the manuscript to incorporate the requested information.

read point-by-point responses

  1. Referee: [Abstract and performance-optimization section] The central performance claims (routine-mode resolution and ~1% high-resolution mode) are stated in the abstract and the optimization discussion but rest on unshown neutron-transport simulations; no quantitative results, parameter tables, error budgets, or direct comparisons to existing instruments are supplied to substantiate the targets. This is load-bearing for the paper's primary assertions about instrument capability.

    Authors: We agree that the performance claims require more explicit supporting data. In the revised manuscript we will expand the performance-optimization section (and add a dedicated subsection if needed) with key quantitative outputs from our McStas neutron-transport simulations. This will include tabulated neutron flux values at the sample for routine and high-resolution configurations, energy-resolution figures with associated uncertainties, a concise error budget for the resolution calculations, and direct comparisons to the performance of established instruments such as LET (ISIS) and CNCS (SNS). These additions will substantiate the stated targets without altering the original design conclusions. revision: yes

  2. Referee: [§3 (Instrument layout and guide design)] The description of the bent supermirror guides and elliptical-focusing geometry (likely §3) is qualitative; without explicit simulation outputs for neutron flux, divergence, or background suppression factors, the claimed improvements in signal-to-noise cannot be independently evaluated.

    Authors: We acknowledge that the current §3 description is primarily qualitative. We will revise this section to include explicit simulation results, specifically: (i) neutron flux and divergence profiles at the sample position with and without the elliptical focusing insert, (ii) quantitative background-suppression factors arising from the bent supermirror guide (e.g., reduction in high-energy neutron transmission), and (iii) corresponding signal-to-noise estimates. These data will be drawn from the same ray-tracing runs already performed for the design and presented as tables or figures to permit independent evaluation. revision: yes

Circularity Check

0 steps flagged

No significant circularity detected

full rationale

The manuscript is a pre-construction instrument design proposal. All headline performance figures (routine-mode resolution and ~1% high-resolution mode) are obtained from neutron-transport simulations of the proposed guide geometry, focusing optics, and chopper timing parameters. These are presented as design targets computed from the chosen layout rather than as quantities that are algebraically or definitionally identical to the inputs. No equations, self-citations, or uniqueness theorems are invoked that would reduce the claimed resolutions to the design parameters by construction; the argument therefore remains self-contained and non-circular.

Axiom & Free-Parameter Ledger

3 free parameters · 2 axioms · 0 invented entities

The central claim rests on standard neutron optics and time-of-flight principles together with engineering choices for path length, guide curvature, and chopper timing; no new physical entities are introduced.

free parameters (3)
  • flight path length
    Chosen to balance energy resolution against neutron intensity for cold neutrons
  • supermirror guide curvature and focusing parameters
    Optimized for background suppression and beam delivery to the sample
  • multi-disk chopper frequencies and phases
    Selected for pulse shaping, energy band selection, and multi-Ei operation
axioms (2)
  • domain assumption Neutron reflection from supermirror coatings follows standard geometric optics with high efficiency
    Invoked for the bent guides and elliptical focusing geometry
  • standard math Time-of-flight energy resolution is determined by flight path length and neutron pulse width
    Used to predict the ~1% high-resolution performance

pith-pipeline@v0.9.0 · 5495 in / 1585 out tokens · 102801 ms · 2026-05-12T04:03:34.170428+00:00 · methodology

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Works this paper leans on

48 extracted references · 48 canonical work pages

  1. [1]

    China Spallation Neutron Source: Design, R

    Jie Wei and Hesheng Chen and Yanwei Chen and Yuanbo Chen and Yunlong Chi and Changdong Deng and Haiyi Dong and Lan Dong and Shouxian Fang and Ji Feng and Shinian Fu and Lunhua He and Wei He and Yuekun Heng and Kaixi Huang and Xuejun Jia and Wen Kang and Xiangcheng Kong and Jian Li and Tianjiao Liang and Guoping Lin and Zhenan Liu and Huafu Ouyang and Qing...

    work page 2009

  2. [2]

    Nature materials , volume=

    China's first pulsed neutron source , author=. Nature materials , volume=. 2016 , publisher=

    work page 2016

  3. [3]

    The design of high energy direct geometry chopper spectrometer at CSNS , journal =

    Wei Luo and Yu Feng and XinZhi Liu and Meng Wang and DongHui Zhu and Wei Gao and YanSheng Geng and QingYong Ren and JunYing Shen and Yuan Sun and XiaoYue Zhang and YuanGuang Xia and TaiSen Zuo and Yue Zheng and Xin Tong , keywords =. The design of high energy direct geometry chopper spectrometer at CSNS , journal =. 2023 , issn =

    work page 2023

  4. [4]

    and Podlesnyak, A

    Ehlers, G. and Podlesnyak, A. A. and Kolesnikov, A. I. , title =. Review of Scientific Instruments , volume =. 2016 , month =

    work page 2016

  5. [5]

    and Nakajima ,Taro and Harriger ,Leland and Zaliznyak ,Igor and Masuda ,Takatsugu , title =

    Kikuchi ,Hodaka and Asai ,Shinichiro and Sato ,Taku J. and Nakajima ,Taro and Harriger ,Leland and Zaliznyak ,Igor and Masuda ,Takatsugu , title =. Journal of the Physical Society of Japan , volume =

    work page

  6. [6]

    and Mourigal, M

    Sala, G. and Mourigal, M. and Boone, C. and Butch, N. P. and Christianson, A. D. and Delaire, O. and DeSantis, A. J. and Hart, C. L. and Hermann, R. P. and Huegle, T. and Kent, D. N. and Lin, J. Y. Y. and Lumsden, M. D. and Manley, M. E. and Quirinale, D. G. and Stone, M. B. and Z, Y. , title =. Review of Scientific Instruments , volume =. 2022 , month =

    work page 2022

  7. [7]

    Sala, Gabriele and Lin, Jiao Y. Y. and Graves, Van B. and Ehlers, Georg. Conceptual design of CHESS, a new direct-geometry inelastic neutron spectrometer dedicated to studying small samples. Journal of Applied Crystallography. 2018

    work page 2018

  8. [8]

    Acta Physica Sinica , volume =

    Non-elastic Neutron Scattering Spectrometer and Its Applications , author =. Acta Physica Sinica , volume =. 2025 , issn =

    work page 2025

  9. [9]

    The high-resolution time-of-flight spectrometer TOFTOF , journal =

    Tobias Unruh and Jürgen Neuhaus and Winfried Petry , keywords =. The high-resolution time-of-flight spectrometer TOFTOF , journal =. 2007 , issn =

    work page 2007

  10. [10]

    Nuclear Instruments and Methods , volume=

    Neutron time-of-flight spectrometers , author=. Nuclear Instruments and Methods , volume=. 1979 , publisher=

    work page 1979

  11. [11]

    2025 , issn =

    Design and construction of the China Spallation Neutron Source , journal =. 2025 , issn =

    work page 2025

  12. [12]

    Journal of research of the National Institute of Standards and Technology , volume=

    Neutron time-of-flight spectroscopy , author=. Journal of research of the National Institute of Standards and Technology , volume=

    work page

  13. [13]

    Physica B: Condensed Matter , volume=

    McStas 1.7-a new version of the flexible Monte Carlo neutron scattering package , author=. Physica B: Condensed Matter , volume=. 2004 , publisher=

    work page 2004

  14. [14]

    document of CSNS , author=

    work page

  15. [15]

    Journal of the Physical Society of Japan , volume=

    AMATERAS: a cold-neutron disk chopper spectrometer , author=. Journal of the Physical Society of Japan , volume=. 2011 , publisher=

    work page 2011

  16. [16]

    Review of Scientific Instruments , volume=

    CHESS: The future direct geometry spectrometer at the second target station , author=. Review of Scientific Instruments , volume=. 2022 , publisher=

    work page 2022

  17. [17]

    Applied Crystallography , volume=

    Optimization of moderators and beam extraction at the ESS , author=. Applied Crystallography , volume=. 2018 , publisher=

    work page 2018

  18. [18]

    Journal of the Physical Society of Japan , volume=

    Recent Improvement of the Signal-to-Noise Ratio on the Fermi Chopper Spectrometer 4SEASONS , author=. Journal of the Physical Society of Japan , volume=. 2013 , publisher=

    work page 2013

  19. [19]

    EPJ Web of Conferences , volume=

    Panther—the new thermal neutron time-of-flight spectrometer at the ILL , author=. EPJ Web of Conferences , volume=. 2022 , organization=

    work page 2022

  20. [20]

    Deen, P. P. and Longeville, S. and Lohstroh, W. and Moreira, F. and Fabrèges, G. and Loaiza, L. and Noferini, D. , title =. Review of Scientific Instruments , volume =. 2021 , month =

    work page 2021

  21. [21]

    Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment , volume=

    LET, a cold neutron multi-disk chopper spectrometer at ISIS , author=. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment , volume=. 2011 , publisher=

    work page 2011

  22. [22]

    Journal of the Physical Society of Japan , volume=

    IN5 cold neutron time-of-flight spectrometer, prepared to tackle single crystal spectroscopy , author=. Journal of the Physical Society of Japan , volume=. 2011 , publisher=

    work page 2011

  23. [23]

    Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment , volume=

    The high-resolution time-of-flight spectrometer TOFTOF , author=. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment , volume=. 2007 , publisher=

    work page 2007

  24. [24]

    Physica B: Condensed Matter , volume=

    MERLIN, a new high count rate spectrometer at ISIS , author=. Physica B: Condensed Matter , volume=. 2006 , publisher=

    work page 2006

  25. [25]

    Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment , volume=

    An analysis of the effectiveness of oscillating radial collimators in neutron scattering applications , author=. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment , volume=. 1994 , publisher=

    work page 1994

  26. [26]

    Proceedings of the 25th ACM SIGKDD international conference on knowledge discovery & data mining , pages=

    Optuna: A next-generation hyperparameter optimization framework , author=. Proceedings of the 25th ACM SIGKDD international conference on knowledge discovery & data mining , pages=

    work page

  27. [27]

    Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment , pages=

    Bayesian optimization of combined ballistic neutron guides for the Elastic Diffuse Scattering spectrometer at CSNS , author=. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment , pages=. 2025 , publisher=

    work page 2025

  28. [28]

    Ehlers, A

    G. Ehlers, A. A. Podlesnyak, A. I. Kolesnikov, The cold neutron chopper spectrometer at the spallation neutron source—a review of the first 8 years of operation, Review of Scientific Instruments 87 (9) (2016) 093902

    work page 2016

  29. [29]

    Kikuchi, S

    H. Kikuchi, S. Asai, T. J. Sato, T. Nakajima, L. Harriger, I. Zaliznyak, T. Masuda, A new inelastic neutron spectrometer hodaca, Journal of the Physical Society of Japan 93 (9) (2024) 091004

    work page 2024

  30. [30]

    G. Sala, M. Mourigal, C. Boone, N. P. Butch, A. D. Christianson, O. Delaire, A. J. DeSantis, C. L. Hart, R. P. Hermann, T. Huegle, D. N. Kent, J. Y. Y. Lin, M. D. Lumsden, M. E. Manley, D. G. Quirinale, M. B. Stone, Y. Z, Chess: The future direct geometry spectrometer at the second target station, Review of Scientific Instruments 93 (6) (2022) 065109

    work page 2022

  31. [31]

    G. Sala, J. Y. Y. Lin, V. B. Graves, G. Ehlers, Conceptual design of CHESS, a new direct-geometry inelastic neutron spectrometer dedicated to studying small samples , Journal of Applied Crystallography 51 (2) (2018) 282--293

    work page 2018

  32. [32]

    Z. Hu, Y. Yuan, L. Li, Q. Ren, Y. Feng, J. Shen, W. Luo, X. Tong, Non-elastic neutron scattering spectrometer and its applications, Acta Physica Sinica 74 (1-20241412) (2025) 012501--1

    work page 2025

  33. [33]

    Unruh, J

    T. Unruh, J. Neuhaus, W. Petry, The high-resolution time-of-flight spectrometer toftof, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 580 (3) (2007) 1414--1422

    work page 2007

  34. [34]

    Bewley, J

    R. Bewley, J. Taylor, S. Bennington, Let, a cold neutron multi-disk chopper spectrometer at isis, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 637 (1) (2011) 128--134

    work page 2011

  35. [35]

    Nakajima, S

    K. Nakajima, S. Ohira-Kawamura, T. Kikuchi, M. Nakamura, R. Kajimoto, Y. Inamura, N. Takahashi, K. Aizawa, K. Suzuya, K. Shibata, et al., Amateras: a cold-neutron disk chopper spectrometer, Journal of the Physical Society of Japan 80 (Suppl. B) (2011) SB028

    work page 2011

  36. [36]

    Ollivier, H

    J. Ollivier, H. Mutka, In5 cold neutron time-of-flight spectrometer, prepared to tackle single crystal spectroscopy, Journal of the Physical Society of Japan 80 (Suppl. B) (2011) SB003

    work page 2011

  37. [37]

    P. P. Deen, S. Longeville, W. Lohstroh, F. Moreira, G. Fabrèges, L. Loaiza, D. Noferini, Cspec: The cold chopper spectrometer of the ess, a detailed overview prior to commissioning, Review of Scientific Instruments 92 (10) (2021) 105104

    work page 2021

  38. [38]

    Chen, X.-L

    H. Chen, X.-L. Wang, China's first pulsed neutron source, Nature materials 15 (7) (2016) 689--691

    work page 2016

  39. [39]

    J. Wei, H. Chen, Y. Chen, Y. Chen, Y. Chi, C. Deng, H. Dong, L. Dong, S. Fang, J. Feng, S. Fu, L. He, W. He, Y. Heng, K. Huang, X. Jia, W. Kang, X. Kong, J. Li, T. Liang, G. Lin, Z. Liu, H. Ouyang, Q. Qin, H. Qu, C. Shi, H. Sun, J. Tang, J. Tao, C. Wang, F. Wang, D. Wang, Q. Wang, S. Wang, T. Wei, J. Xi, T. Xu, Z. Xu, W. Yin, X. Yin, J. Zhang, Z. Zhang, Z...

    work page 2009

  40. [40]

    W. Luo, Y. Feng, X. Liu, M. Wang, D. Zhu, W. Gao, Y. Geng, Q. Ren, J. Shen, Y. Sun, X. Zhang, Y. Xia, T. Zuo, Y. Zheng, X. Tong, The design of high energy direct geometry chopper spectrometer at csns, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 1046 (2023) 167676

    work page 2023

  41. [41]

    H. Chen, Y. Chen, S. Fu, L. Ma, S. Wang, F. Chen, Y. Chen, H. Dong, L. Dong, G. Feng, J. Gu, L. He, K. He, W. He, C. Hu, J. Huang, Q. Ji, X. Jia, D. Jin, L. Kang, W. Kang, T. Liang, G. Lin, H. Liu, J. Li, H. Ouyang, F. Qi, X. Qi, H. Qu, H. Sun, Z. Sun, L. Shen, J. Tang, J. Tao, F. Wang, L. Wang, P. Wang, Q. Wang, Y. Wu, J. Xi, T. Xu, W. Yin, B. Zhang, J. ...

    work page 2025

  42. [42]

    Akiba, S

    T. Akiba, S. Sano, T. Yanase, T. Ohta, M. Koyama, Optuna: A next-generation hyperparameter optimization framework, in: Proceedings of the 25th ACM SIGKDD international conference on knowledge discovery & data mining, 2019, pp. 2623--2631

    work page 2019

  43. [43]

    P. Zhou, Z. Zeng, Z. He, X. Wang, L. Lin, M. Tang, A. Goukassov, F. Wang, T. Liang, E. Feng, Bayesian optimization of combined ballistic neutron guides for the elastic diffuse scattering spectrometer at csns, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment (2025) 171264

    work page 2025

  44. [44]

    G. Sala, M. Mourigal, C. Boone, N. Butch, A. Christianson, O. Delaire, A. DeSantis, C. Hart, R. Hermann, T. Huegle, et al., Chess: The future direct geometry spectrometer at the second target station, Review of Scientific Instruments 93 (6) (2022)

    work page 2022

  45. [45]

    Kajimoto, M

    R. Kajimoto, M. Nakamura, Y. Inamura, K. Ikeuchi, S. Ji, K. Nakajima, S. Ohira-Kawamura, W. Kambara, M. Sawabe, A. Kamiya, et al., Recent improvement of the signal-to-noise ratio on the fermi chopper spectrometer 4seasons, Journal of the Physical Society of Japan 82 (Suppl. A) (2013) SA032

    work page 2013

  46. [46]

    B. F k, S. Rols, G. Manzin, O. Meulien, Panther—the new thermal neutron time-of-flight spectrometer at the ill, in: EPJ Web of Conferences, Vol. 272, EDP Sciences, 2022, p. 02001

    work page 2022

  47. [47]

    Bewley, R

    R. Bewley, R. Eccleston, K. McEwen, S. Hayden, M. Dove, S. Bennington, J. Treadgold, R. Coleman, Merlin, a new high count rate spectrometer at isis, Physica B: Condensed Matter 385 (2006) 1029--1031

    work page 2006

  48. [48]

    Copley, J

    J. Copley, J. Cook, An analysis of the effectiveness of oscillating radial collimators in neutron scattering applications, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 345 (2) (1994) 313--323

    work page 1994