Foreword: Special Issue on the Initial Release of MCNP6

Goorley, Tim

doi:10.13182/nt12-a15345

Cited by 45 publications

(63 citation statements)

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“…Errors are propagated from imperfect knowledge of the reactor thermal power, and from the extrapolation of this power into the associated anti-neutrino spectrum. Reactor operators are able to provide precision measurements of the thermal output power, as well as estimates (based on simulation with the code MCNP [37]) of the isotopic fuel composition and fission fractions f i /F , where f i is the absolute fission rate of species i and F ≡ f i . Uncertainty estimates on the order of 2-3% are typical, although it may be possible to reduce this to around a half of a percent (cf.…”

Section: -100 Evmentioning

confidence: 99%

Sensitivity to oscillation with a sterile fourth generation neutrino from ultralow threshold neutrino-nucleus coherent scattering

et al. 2016

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We discuss prospects for probing short-range sterile neutrino oscillation using neutrino-nucleus coherent scattering with ultra-low energy (∼ 10 eV -100 eV) recoil threshold cryogenic Ge detectors. The analysis is performed in the context of a specific and contemporary reactor-based experimental proposal, developed in cooperation with the Nuclear Science Center at Texas A&M University, and references developing technology based upon economical and scalable detector arrays. The baseline of the experiment is substantially shorter than existing measurements, as near as about 2 meters from the reactor core, and is moreover variable, extending continuously up to a range of about 10 meters. This proximity and variety combine to provide extraordinary sensitivity to a wide spectrum of oscillation scales, while facilitating the tidy cancellation of leading systematic uncertainties in the reactor source and environment. With 100 eV sensitivity, for exposures on the order of 200 kg·y, we project an estimated sensitivity to first/fourth neutrino oscillation with a mass gap ∆m 2 ∼ 1 eV 2 at an amplitude sin 2 2θ ∼ 10 −1 , or ∆m 2 ∼ 0.2 eV 2 at unit amplitude. Larger exposures, around 5,000 kg·y, together with 10 eV sensitivity are capable of probing more than an additional order of magnitude in amplitude.

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Section: -100 Evmentioning

confidence: 99%

Sensitivity to oscillation with a sterile fourth generation neutrino from ultralow threshold neutrino-nucleus coherent scattering

et al. 2016

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“…The multi-particle Monte Carlo transport code MCNP6 [5] was used to simulate the proton-induced nuclear interactions and the subsequent transport of secondary particles. The major advantage of using MCNP6 in this study is the accuracy of the underlying cross sections for proton and neutron transport.…”

Section: Calculation Methodsmentioning

confidence: 99%

“…2, we considered two different geometries to generate shielding parameters, without and with the inclusion of the partition wall in the model. A coupling technique called the surface source write and read (SSW/SSR) in MCNP6 was implemented on the exterior surfaces of the BSA to reduce the computing burden of source generation in repeated Monte Carlo shielding simulations [5]. Note that the shielding parameters generated in this way were obviously the BSA dependent and intended only for use in shielding analyses of this facility.…”

Section: Calculation Methodsmentioning

confidence: 99%

Shielding analyses of an AB-BNCT facility using Monte Carlo simulations and simplified methods

Lai

Sheu

2017

EPJ Web Conf.

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Abstract. Accurate Monte Carlo simulations and simplified methods were used to investigate the shielding requirements of a hypothetical accelerator-based boron neutron capture therapy (AB-BNCT) facility that included an accelerator room and a patient treatment room. The epithermal neutron beam for BNCT purpose was generated by coupling a neutron production target with a specially designed beam shaping assembly (BSA), which was embedded in the partition wall between the two rooms. Neutrons were produced from a beryllium target bombarded by 1-mA 30-MeV protons. The MCNP6-generated surface sources around all the exterior surfaces of the BSA were established to facilitate repeated Monte Carlo shielding calculations. In addition, three simplified models based on a point-source line-of-sight approximation were developed and their predictions were compared with the reference Monte Carlo results. The comparison determined which model resulted in better dose estimation, forming the basis of future design activities for the first AB-BNCT facility in Taiwan.

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“…MCNP6 [1] is used in various applications involving fission reactions at low, but also at intermediate and high energies. It is critical that it describes such reactions as well as possible, therefore it is often validated and verified against available experimental data and calculations by other models (see, e.g., [1,2] and refrences therein).…”

Section: Introductionmentioning

confidence: 99%

MCNP6 Fission Cross Section Calculations at Intermediate and High Energies

Mashnik

Sierk

Prael

2014

Nuclear Data Sheets

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MCNP6 has been Validated and Verified (V&V) against intermediate-and high-energy fissioncross-section experimental data. An error in the calculation of fission cross sections of 181 Ta and a few nearby target nuclei by the CEM03.03 event generator in MCNP6 and al "bug" in the calculation of fission cross sections with the GENXS option of MCNP6 while using the LAQGSM03.03 event generator were detected during our V&V work. After fixing both problems, we find that MCNP6 using CEM03.03 and LAQGSM03.03 calculates fission cross sections in good agreement with available experimental data for reactions induced by nucleons, pions, and photons on both subactinide and actinide nuclei at incident energies from several tens of MeV to about 1 TeV.

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Foreword: Special Issue on the Initial Release of MCNP6

Cited by 45 publications

References 0 publications

Sensitivity to oscillation with a sterile fourth generation neutrino from ultralow threshold neutrino-nucleus coherent scattering

Sensitivity to oscillation with a sterile fourth generation neutrino from ultralow threshold neutrino-nucleus coherent scattering

Shielding analyses of an AB-BNCT facility using Monte Carlo simulations and simplified methods

MCNP6 Fission Cross Section Calculations at Intermediate and High Energies

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