Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 63 for “"Monte Carlo code"”.
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Development of Kinetic Monte Carlo Code to Study Oxygen Mobility in Lanthanum-doped Ceria
… this study was to develop a generalized Kinetic Monte Carlo code to study oxygen mobility in lanthanum-doped cerium oxide, and to demonstrate this code as a validation tool by simulating oxygen diffusion and comparing the results with experimental data to confirm the so-called lanthanum trapping …
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Error Analysis, Improvement, and New Applications of Nodal Flux Reconstruction Methods
… distribution from the region average data from a Monte Carlo code. The specific example of the one-dimensional axial flux in a TRIGA reactor was investigated.
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Dynamics and evolution of dense stellar systems
… number of numerical N-body simulations using our Monte-Carlo code. Heavy objects, which could represent stellar remnants such as neutron stars or black holes, exhibit behavior that is in quantitative agreement with simple analytical arguments. Light objects, which could represent free-floating …
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Determination of energy spectra of proton therapy beams
… beams produced by a passive scattering system. Monte Carlo simulations of the spectra were computed with the MCNPX 2.1.5 Monte Carlo code to compare with experimental measurements.
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Anwendung der Monte-Carlo-Methoden zur Lösung spezieller Probleme des Photonentransports
… special photon transport problems. A respective Monte Carlo code were implemented. The photon transport calculations were made for simulation of light distribution in tissues, for 3D estimation of dosis brachytherapy source, for determination of scattering coincidences in PET and for solving of …
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Force Field Development With Gomc A Fast New Monte Carlo Molecular Simulation Code
<p>In this work GOMC (GPU Optimized Monte Carlo) a new fast, flexible, and free molecular Monte Carlo code for the simulation atomistic chemical systems is presented. The results of a large Lennard-Jonesium simulation in the Gibbs ensemble is presented. Force fields developed using the code are …
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Criticality alarm system design guide with accompanying alarm system development for the Radiochemical Processing Laboratory in Richland, Washington
… also included. The analysis for RPL utilized the Monte Carlo code MCNP5 for establishing detector coverage in the facility. Based on the design methodology, significant improvements to the existing CAS were made that increase the reliability, transparency, and coverage of the system.
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Memory efficient indexing algorithm for physical properties in OpenMC
OpenMC is an open source Monte Carlo code designed at MIT with a focus on parallel scalability for large nuclear reactor simulations. The target problem for OpenMC is a full core high-fidelity multi-physics coupled simulation. This encompasses not only nuclear physics, but also material science and …
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Experimental Validation of the Monte Carlo-based Shielding Design of the UIUC D-T Neutron Metrology Facility
… detectors. We simulated the facility using the Monte Carlo code MCNP to quantify the dose that facility operators and the general public will be exposed to during facility operations. Also, validation of the simulated results was conducted with experimental work involving a new type of Bonner …
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Neutronics and thermal-hydraulics analysis of transatomic power molten salt reactor (TAP MSR) core under load following operations
… core under load-following operations using a Monte Carlo code, Serpent 2, as well as a UIUC-developed MOOSE-based code, Moltres. A simulation method was developed to determine the operational bounds of the TAP MSR core and its transient behavior under rapid power ramps using both fresh fuel …
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Integration of VMC++ into a Commercial Treatment Planning System
… treatment planning system at VCU as another Monte Carlo code option, since it has been shown to increase efficiency dramatically without introducing a significant amount of systematic error. Also, independent validation of VMC++ for photon beams is of interest since this has not been …
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A Millimeter Wavelength Interferometric Study of Organic Molecules in Comet Hale -Bopp (C/1995 O1)
… A three dimensional, non-spherically symmetric Monte Carlo code has been written to calculate production rates, the results of which, when combined with analysis of the high resolution observations and difference maps, have yielded more accurate production rates than those of the standard model."
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Simulation of muon-catalysed fusion experiments
A Monte Carlo code MUGLU has been, written for the simulation of experiments to measure alpha-muon sticking in muon catalysed deuterium-tritium fusion. The experiments simulated are those which measure the ratio of αμ to α from fusion in a low density gas target by detecting collinear alpha-neutron …
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NUCLEATION AND DETECTION IN TENSION METASTABLE FLUIDS
… (e.g., LiI, He-3, BF3) detectors coupled with Monte-Carlo code simulations to develop spectroscopy information was developed (in lieu of present-day tedious methods involving data acquisition using a multi-sized set of Bonner spheres). Focus of this thesis work was on developing neutron …
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Low variance methods for Monte Carlo simulation of phonon transport
… and nanotechnologies. In this work, we focus on Monte Carlo methods for phonon transport, intended for studies in microscale heat transfer. After reviewing the theory of phonons, we use scientific literature to write a Monte Carlo code solving the Boltzmann Transport Equation for phonons. As a …
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Experimental study on carbon fragmentation for hadrontherapy
… appropriate treatment accuracy. Currently, the Monte Carlo codes are the most powerful tools able to precisely compute the biological dose to be delivered. However, the accuracy of a Monte Carlo simulation is associated to the reliability of the physical processes implemented in the code which, …
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Development and characterization of a high resolution portable gamma spectrometer
… The detector has been modeled using advanced Monte Carlo code (MCNP/X code) for the response function simulation and parameter characterization. The simulation results have been validated by experimental investigations using a wide range of gamma radiation energies. The developed spectrometer …
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Development of a gamma ray telescope for online synovial dosimetry in boron neutron capture synovectomy
… boron dose for accelerator-based BNCS. The Monte Carlo code MCNP was used to design the telescope system. The neutron and photon background distributions in the radiation vault at the Laboratory for Accelerator Beam Applications (LABA) at MIT were explored via Monte Carlo simulations, and an …
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Spectrum and conversion efficiency measurements of suprathermal electrons from relativistic laser plasma interactions
… The target emission is modeled using the Monte Carlo code Integrated Tiger Series 3.0 in order to unfold the electron spectrum from the x-ray measurements. Conversion efficiencies into 1-3 MeV electrons of 12-28% were inferred, representing 35-60% total conversion efficiencies. Laser …
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