{"title":"在 Geant4 和 MCNP 中检查 LEGEND-1000 宇宙中子背景","authors":"C.J. Barton, W. Xu, R. Massarczyk, S. Elliott","doi":"10.1088/1748-0221/19/05/p05056","DOIUrl":null,"url":null,"abstract":"\n For next-generation neutrinoless double beta decay\n experiments, extremely low backgrounds are necessary. An\n understanding of in-situ cosmogenic backgrounds is critical to the\n design effort. In-situ cosmogenic backgrounds impose a depth\n requirement and especially impact the choice of host\n laboratory. Often, simulations are used to understand background\n effects, and these simulations can have large uncertainties. One way\n to characterize the systematic uncertainties is to compare unalike\n simulation programs. In this paper, a suite of neutron simulations\n with identical geometries and starting parameters have been\n performed with Geant4 and MCNP, using geometries relevant to the\n LEGEND-1000 experiment. This study is an important step in gauging\n the uncertainties of simulations-based estimates. To reduce project\n risks associated with simulation uncertainties, a novel alternative\n shield of methane-doped liquid argon is considered in this paper for\n LEGEND-1000, which could achieve large background reduction without\n requiring significant modification to the baseline design.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":null,"pages":null},"PeriodicalIF":1.3000,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Examining LEGEND-1000 cosmogenic neutron backgrounds in Geant4 and MCNP\",\"authors\":\"C.J. Barton, W. Xu, R. Massarczyk, S. Elliott\",\"doi\":\"10.1088/1748-0221/19/05/p05056\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"\\n For next-generation neutrinoless double beta decay\\n experiments, extremely low backgrounds are necessary. An\\n understanding of in-situ cosmogenic backgrounds is critical to the\\n design effort. In-situ cosmogenic backgrounds impose a depth\\n requirement and especially impact the choice of host\\n laboratory. Often, simulations are used to understand background\\n effects, and these simulations can have large uncertainties. One way\\n to characterize the systematic uncertainties is to compare unalike\\n simulation programs. In this paper, a suite of neutron simulations\\n with identical geometries and starting parameters have been\\n performed with Geant4 and MCNP, using geometries relevant to the\\n LEGEND-1000 experiment. This study is an important step in gauging\\n the uncertainties of simulations-based estimates. To reduce project\\n risks associated with simulation uncertainties, a novel alternative\\n shield of methane-doped liquid argon is considered in this paper for\\n LEGEND-1000, which could achieve large background reduction without\\n requiring significant modification to the baseline design.\",\"PeriodicalId\":16184,\"journal\":{\"name\":\"Journal of Instrumentation\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.3000,\"publicationDate\":\"2024-05-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Instrumentation\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.1088/1748-0221/19/05/p05056\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"INSTRUMENTS & INSTRUMENTATION\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Instrumentation","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1088/1748-0221/19/05/p05056","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"INSTRUMENTS & INSTRUMENTATION","Score":null,"Total":0}
Examining LEGEND-1000 cosmogenic neutron backgrounds in Geant4 and MCNP
For next-generation neutrinoless double beta decay
experiments, extremely low backgrounds are necessary. An
understanding of in-situ cosmogenic backgrounds is critical to the
design effort. In-situ cosmogenic backgrounds impose a depth
requirement and especially impact the choice of host
laboratory. Often, simulations are used to understand background
effects, and these simulations can have large uncertainties. One way
to characterize the systematic uncertainties is to compare unalike
simulation programs. In this paper, a suite of neutron simulations
with identical geometries and starting parameters have been
performed with Geant4 and MCNP, using geometries relevant to the
LEGEND-1000 experiment. This study is an important step in gauging
the uncertainties of simulations-based estimates. To reduce project
risks associated with simulation uncertainties, a novel alternative
shield of methane-doped liquid argon is considered in this paper for
LEGEND-1000, which could achieve large background reduction without
requiring significant modification to the baseline design.
期刊介绍:
Journal of Instrumentation (JINST) covers major areas related to concepts and instrumentation in detector physics, accelerator science and associated experimental methods and techniques, theory, modelling and simulations. The main subject areas include.
-Accelerators: concepts, modelling, simulations and sources-
Instrumentation and hardware for accelerators: particles, synchrotron radiation, neutrons-
Detector physics: concepts, processes, methods, modelling and simulations-
Detectors, apparatus and methods for particle, astroparticle, nuclear, atomic, and molecular physics-
Instrumentation and methods for plasma research-
Methods and apparatus for astronomy and astrophysics-
Detectors, methods and apparatus for biomedical applications, life sciences and material research-
Instrumentation and techniques for medical imaging, diagnostics and therapy-
Instrumentation and techniques for dosimetry, monitoring and radiation damage-
Detectors, instrumentation and methods for non-destructive tests (NDT)-
Detector readout concepts, electronics and data acquisition methods-
Algorithms, software and data reduction methods-
Materials and associated technologies, etc.-
Engineering and technical issues.
JINST also includes a section dedicated to technical reports and instrumentation theses.