Innovative approaches to neutron beam optimization: A case study of FP14 at LANSCE

J. Svoboda; D. P. Broughton; M. J. Mocko; A. L. Cooper; A. Couture; B. DiGiovine; S. A. Kuvin; E. Leal-Cidoncha; H. Y. Lee; L. Zavorka

doi:10.1016/j.nima.2024.169167

Innovative approaches to neutron beam optimization: A case study of FP14 at LANSCE

J. Svoboda, D. P. Broughton, M. J. Mocko, A. L. Cooper, A. Couture, B. DiGiovine, S. A. Kuvin, E. Leal-Cidoncha, H. Y. Lee, L. Zavorka

STS Project Technical Systems

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

This paper describes an experimental method to acquire high resolution energy- and spatially- resolved neutron beam spots using the time-gated neutron imaging system with Teledyne Pi-MAX4 camera. These experimental data offer a unique opportunity for benchmarking beam spot simulations. High-quality simulations depend significantly on a high-fidelity geometry model, which can be challenging for legacy facilities. We informed our MCNPX geometry model by latest metrology survey employing Leica laser tracker ATS600. It gave us a high fidelity description of our facility geometry. Such a robust integration of novel tools and methods yields a previously unattainable level of accuracy in both predicting and capturing neutron beam spots, marking a notable advancement over traditional methods reliant on static image plates. To demonstrate the practical application of these tools, we are showing a non-uniform beam spot challenge at our Flight Path 14 (FP14) at the Los Alamos Neutron Science Center (LANSCE). Our precise MCNPX prediction of beam spot shifting as function of neutron energy was confirmed by experimental beam spot measured with extremely high level of detail. Results of this research demonstrate a significant leap in neutron beam optimization at LANSCE and set a new benchmark in beam spot characterization. The advanced methods presented here have potential for adoption at similar research facilities worldwide, aiming at substantial improvement in neutron beam delivery for experiments.

Original language	English
Article number	169167
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	1062
DOIs	https://doi.org/10.1016/j.nima.2024.169167
State	Published - May 2024

Funding

This work was supported by the U.S. Department of Energy through the Los Alamos National Laboratory . Los Alamos National Laboratory is operated by Triad National Security, LLC, for the National Nuclear Security Administration of U.S. Department of Energy (Contract No. 89233218CNA000001 ). Fig. 1 a,b,d are provided with courtesy of Accelerator Operations & Technology Division, LANSCE.

Keywords

Laser tracker survey
Monte Carlo simulations
Neutron beam optimization
Neutron beam spot uniformity
Spallation target
Time-gated imaging system

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Svoboda, J., Broughton, D. P., Mocko, M. J., Cooper, A. L., Couture, A., DiGiovine, B., Kuvin, S. A., Leal-Cidoncha, E., Lee, H. Y., & Zavorka, L. (2024). Innovative approaches to neutron beam optimization: A case study of FP14 at LANSCE. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1062, Article 169167. https://doi.org/10.1016/j.nima.2024.169167

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title = "Innovative approaches to neutron beam optimization: A case study of FP14 at LANSCE",

abstract = "This paper describes an experimental method to acquire high resolution energy- and spatially- resolved neutron beam spots using the time-gated neutron imaging system with Teledyne Pi-MAX4 camera. These experimental data offer a unique opportunity for benchmarking beam spot simulations. High-quality simulations depend significantly on a high-fidelity geometry model, which can be challenging for legacy facilities. We informed our MCNPX geometry model by latest metrology survey employing Leica laser tracker ATS600. It gave us a high fidelity description of our facility geometry. Such a robust integration of novel tools and methods yields a previously unattainable level of accuracy in both predicting and capturing neutron beam spots, marking a notable advancement over traditional methods reliant on static image plates. To demonstrate the practical application of these tools, we are showing a non-uniform beam spot challenge at our Flight Path 14 (FP14) at the Los Alamos Neutron Science Center (LANSCE). Our precise MCNPX prediction of beam spot shifting as function of neutron energy was confirmed by experimental beam spot measured with extremely high level of detail. Results of this research demonstrate a significant leap in neutron beam optimization at LANSCE and set a new benchmark in beam spot characterization. The advanced methods presented here have potential for adoption at similar research facilities worldwide, aiming at substantial improvement in neutron beam delivery for experiments.",

keywords = "Laser tracker survey, Monte Carlo simulations, Neutron beam optimization, Neutron beam spot uniformity, Spallation target, Time-gated imaging system",

author = "J. Svoboda and Broughton, {D. P.} and Mocko, {M. J.} and Cooper, {A. L.} and A. Couture and B. DiGiovine and Kuvin, {S. A.} and E. Leal-Cidoncha and Lee, {H. Y.} and L. Zavorka",

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doi = "10.1016/j.nima.2024.169167",

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Svoboda, J, Broughton, DP, Mocko, MJ, Cooper, AL, Couture, A, DiGiovine, B, Kuvin, SA, Leal-Cidoncha, E, Lee, HY & Zavorka, L 2024, 'Innovative approaches to neutron beam optimization: A case study of FP14 at LANSCE', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 1062, 169167. https://doi.org/10.1016/j.nima.2024.169167

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AU - Svoboda, J.

AU - Broughton, D. P.

AU - Mocko, M. J.

AU - Cooper, A. L.

AU - Couture, A.

AU - DiGiovine, B.

AU - Kuvin, S. A.

AU - Leal-Cidoncha, E.

AU - Lee, H. Y.

AU - Zavorka, L.

PY - 2024/5

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N2 - This paper describes an experimental method to acquire high resolution energy- and spatially- resolved neutron beam spots using the time-gated neutron imaging system with Teledyne Pi-MAX4 camera. These experimental data offer a unique opportunity for benchmarking beam spot simulations. High-quality simulations depend significantly on a high-fidelity geometry model, which can be challenging for legacy facilities. We informed our MCNPX geometry model by latest metrology survey employing Leica laser tracker ATS600. It gave us a high fidelity description of our facility geometry. Such a robust integration of novel tools and methods yields a previously unattainable level of accuracy in both predicting and capturing neutron beam spots, marking a notable advancement over traditional methods reliant on static image plates. To demonstrate the practical application of these tools, we are showing a non-uniform beam spot challenge at our Flight Path 14 (FP14) at the Los Alamos Neutron Science Center (LANSCE). Our precise MCNPX prediction of beam spot shifting as function of neutron energy was confirmed by experimental beam spot measured with extremely high level of detail. Results of this research demonstrate a significant leap in neutron beam optimization at LANSCE and set a new benchmark in beam spot characterization. The advanced methods presented here have potential for adoption at similar research facilities worldwide, aiming at substantial improvement in neutron beam delivery for experiments.

AB - This paper describes an experimental method to acquire high resolution energy- and spatially- resolved neutron beam spots using the time-gated neutron imaging system with Teledyne Pi-MAX4 camera. These experimental data offer a unique opportunity for benchmarking beam spot simulations. High-quality simulations depend significantly on a high-fidelity geometry model, which can be challenging for legacy facilities. We informed our MCNPX geometry model by latest metrology survey employing Leica laser tracker ATS600. It gave us a high fidelity description of our facility geometry. Such a robust integration of novel tools and methods yields a previously unattainable level of accuracy in both predicting and capturing neutron beam spots, marking a notable advancement over traditional methods reliant on static image plates. To demonstrate the practical application of these tools, we are showing a non-uniform beam spot challenge at our Flight Path 14 (FP14) at the Los Alamos Neutron Science Center (LANSCE). Our precise MCNPX prediction of beam spot shifting as function of neutron energy was confirmed by experimental beam spot measured with extremely high level of detail. Results of this research demonstrate a significant leap in neutron beam optimization at LANSCE and set a new benchmark in beam spot characterization. The advanced methods presented here have potential for adoption at similar research facilities worldwide, aiming at substantial improvement in neutron beam delivery for experiments.

KW - Laser tracker survey

KW - Monte Carlo simulations

KW - Neutron beam optimization

KW - Neutron beam spot uniformity

KW - Spallation target

KW - Time-gated imaging system

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

M1 - 169167

ER -

Innovative approaches to neutron beam optimization: A case study of FP14 at LANSCE

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