Design and characterization of AmLi neutron sources for the LZ experiment

Sazzad, A. B. M. R.; Busenitz, Jerry; Piepke, A.; Poudel, S. S.; H., Trewin,; LeViness, Alexandra

doi:10.1088/1748-0221/18/05/p05006

Cited by 2 publications

(1 citation statement)

References 26 publications

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“…The use of neutrons is increasingly important in fields such as materials science, resource exploration, life sciences, agricultural production, and others [1][2][3][4]. In the 21st century, compact accelerator neutron sources have shown great advantages in scientific engineering research and medical treatments due to their low cost, short construction time, and high flexibility [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Optimization of moderator materials by NSGA II based on macroscopic cross-sections: applications in accelerator neutron sources

Zhong

Yuan

et al. 2023

J. Inst.

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In recent years, genetic algorithms have been applied in nuclear technology design, which have been shown to produce optimized results more efficiently than traditional enumeration methods. This advancement in optimization techniques is particularly useful in the field of nuclear technology design, where complexity is high and decision-making time is critical. It can be used to optimize moderator materials for ANS to find composite materials that provide high neutron beam quality. At present, the direct combination of Monte Carlo method and genetic algorithm requires a lot of computing resources and time. And the weights of different optimization objectives are controversial. Thus, we propose a two-step method based on NSGA II, which uses macroscopic section as the intermediate parameters for optimization. It can greatly reduce the time of genetic algorithm optimization. The method is applied to the PAFA project of Sun Yat-sen University, the computational speed has been increased by 50 times based on a 50-generation optimization. And the results of the genetic algorithm show that the neutron beam obtained by using composite materials as moderator is 30.8% better than that obtained by using only MgF2 as moderator. The two-step genetic algorithm optimization has shown its great potential in the optimization problem of moderator materials.

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Section: Introductionmentioning

confidence: 99%

Optimization of moderator materials by NSGA II based on macroscopic cross-sections: applications in accelerator neutron sources

Zhong

Yuan

et al. 2023

J. Inst.

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The design, implementation, and performance of the LZ calibration systems

Aalbers,

Akerib,

Al Musalhi

et al. 2024

J. Inst.

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LUX-ZEPLIN (LZ) is a tonne-scale experiment searching for direct dark matter interactions and other rare events. It is located at the Sanford Underground Research Facility (SURF) in Lead, South Dakota, USA. The core of the LZ detector is a dual-phase xenon time projection chamber (TPC), designed with the primary goal of detecting Weakly Interacting Massive Particles (WIMPs) via their induced low energy nuclear recoils. Surrounding the TPC, two veto detectors immersed in an ultra-pure water tank enable reducing background events to enhance the discovery potential. Intricate calibration systems are purposely designed to precisely understand the responses of these three detector volumes to various types of particle interactions and to demonstrate LZ's ability to discriminate between signals and backgrounds. In this paper, we present a comprehensive discussion of the key features, requirements, and performance of the LZ calibration systems, which play a crucial role in enabling LZ's WIMP-search and its broad science program. The thorough description of these calibration systems, with an emphasis on their novel aspects, is valuable for future calibration efforts in direct dark matter and other rare-event search experiments.

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Design and characterization of AmLi neutron sources for the LZ experiment

Cited by 2 publications

References 26 publications

Optimization of moderator materials by NSGA II based on macroscopic cross-sections: applications in accelerator neutron sources

Optimization of moderator materials by NSGA II based on macroscopic cross-sections: applications in accelerator neutron sources

The design, implementation, and performance of the LZ calibration systems

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