Physics design of the next-generation spallation neutron target-moderator-reflector-shield assembly at LANSCE
Abstract
Here, we discuss the physics design of the next-generation spallation neutron target-moderator-reflector-shield (TMRS) assembly for the Manuel Lujan Jr. Neutron Scattering Center (Lujan Center) at the Los Alamos Neutron Science Center (LANSCE). We developed this TMRS to improve the neutronic performance of the Lujan Center in the intermediate energy range (keV–MeV) enabling a variety of new nuclear physics experiments, as well as increasing the quality of the ongoing experiments. The results of our Monte Carlo optimization study indicate that the new TMRS will generate keV–MeV neutrons with higher intensity and improved time resolution. At the same time, the new design largely maintains its current performance in the cold and thermal ranges supporting materials research. In this article we show that the new TMRS has the potential to enhance the Lujan Center’s experimental capability in a wider interval of energies – cold to intermediate – after its scheduled installation in 2020.
- Authors:
-
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Publication Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1459634
- Report Number(s):
- LA-UR-18-21681
Journal ID: ISSN 0168-9002; TRN: US1901586
- Grant/Contract Number:
- AC52-06NA25396
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
- Additional Journal Information:
- Journal Volume: 901; Journal Issue: C; Journal ID: ISSN 0168-9002
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 43 PARTICLE ACCELERATORS; Accelerator Design, Technology, and Operations
Citation Formats
Zavorka, Lukas, Mocko, Michael Jeffrey, and Koehler, Paul E. Physics design of the next-generation spallation neutron target-moderator-reflector-shield assembly at LANSCE. United States: N. p., 2018.
Web. doi:10.1016/j.nima.2018.06.018.
Zavorka, Lukas, Mocko, Michael Jeffrey, & Koehler, Paul E. Physics design of the next-generation spallation neutron target-moderator-reflector-shield assembly at LANSCE. United States. https://doi.org/10.1016/j.nima.2018.06.018
Zavorka, Lukas, Mocko, Michael Jeffrey, and Koehler, Paul E. Fri .
"Physics design of the next-generation spallation neutron target-moderator-reflector-shield assembly at LANSCE". United States. https://doi.org/10.1016/j.nima.2018.06.018. https://www.osti.gov/servlets/purl/1459634.
@article{osti_1459634,
title = {Physics design of the next-generation spallation neutron target-moderator-reflector-shield assembly at LANSCE},
author = {Zavorka, Lukas and Mocko, Michael Jeffrey and Koehler, Paul E.},
abstractNote = {Here, we discuss the physics design of the next-generation spallation neutron target-moderator-reflector-shield (TMRS) assembly for the Manuel Lujan Jr. Neutron Scattering Center (Lujan Center) at the Los Alamos Neutron Science Center (LANSCE). We developed this TMRS to improve the neutronic performance of the Lujan Center in the intermediate energy range (keV–MeV) enabling a variety of new nuclear physics experiments, as well as increasing the quality of the ongoing experiments. The results of our Monte Carlo optimization study indicate that the new TMRS will generate keV–MeV neutrons with higher intensity and improved time resolution. At the same time, the new design largely maintains its current performance in the cold and thermal ranges supporting materials research. In this article we show that the new TMRS has the potential to enhance the Lujan Center’s experimental capability in a wider interval of energies – cold to intermediate – after its scheduled installation in 2020.},
doi = {10.1016/j.nima.2018.06.018},
journal = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},
number = C,
volume = 901,
place = {United States},
year = {Fri Jun 15 00:00:00 EDT 2018},
month = {Fri Jun 15 00:00:00 EDT 2018}
}
Web of Science
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