Global ETD Search
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Showing 1 to 20 of 21 for “"fusion device"”.
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Microwave Interferometer and Refractometer for the WB-8 Polywell Fusion Device
… chamber is an inertial electrostatic confinement device which is being tested by Energy Matter Conversion Corporation in an attempt to study the viability of their Polywell design as a source of fusion energy. One of the primary diagnostic tools will be a 94 GHz interferometer which will give a …
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Pulsed Power Supply (and Operation) of the Cylindrical Inertial Electrostatic Confinement (IEC) Fusion Device
Made available in DSpace on 2017-07-06T18:59:00Z (GMT). No. of bitstreams: 3 Stubbers_Robert_A_MS.pdf: 39107463 bytes, checksum: 825927c8c3b1aec512d03c76c47a4b21 (MD5) Stubbers_Robert_A_MS_ABS.pdf: 641481 bytes, checksum: adec6ce817d06a2f6265dcdfc3702553 (MD5) license.txt: 4813 bytes, checksum: …
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Two-Dimensional Modeling of a Radially-Convergent Cylindrical Inertial Electrostatic Confinement (Iec) Fusion Device
De-excitation of charge-exchange fast neutrals is estimated as the dominant source of light in Star-mode beams, and electron-impact excitation is estimated as the dominant light source in the Star-mode core. The spatial distribution of these reactions is also in agreement with experimental …
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Experimental Study of Proton Rate Density in a Spherical Inertial Electrostatic Confinement Fusion Device
… (SIEC-TX) and an IEC linear neutron source device (C-device)--have been developed. The SIEC-TX generates x-rays by electron-electron interactions at relativistic velocity at the sphere center when the electrons are accelerated and focused by a spherical grid. The wavelength of the emitted …
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Shutdown Dose Rate Modeling for Radiation Requirements Development and Design Trend Analysis in the ARC Fusion Device
To achieve commercial viability, Commonwealth Fusion System’s ARC device must maximize its availability to produce power, thus demanding a rapid maintenance process to replace radiation-damaged components. Designing robotic systems to operate in this radiation environment requires understanding the …
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Monte Carlo dosimetry and activation calculation for a proposed fusion device : MCNP analysis of aAlcator C-MOD
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1985.
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Design and construction of high-temperature, high-vacuum tensile tester for fusion reactor materials
Fusion energy is a promising carbon-free, limitless source of energy that could contribute to mitigating global climate change. One of the critical challenges in realizing fusion energy is the survival of structural materials in the extreme environment of a fusion device. Specifically, materials …
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In vitro comparison of a new stand-alone anterior lumbar interbody cage device with established fixation techniques
… relieve the pain. Spinal arthrodesis, i.e. joint fusion, is beneficial in many cases as the final option for patients suffering from certain types of low back pain (LBP). In order to promote solid fusion across a decompressed spinal segment, interbody spacers/cages are used with and without …
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Enabling the simulation of helium transport in lithium for fusion devices
Nuclear fusion is a potential source of abundant, carbon-free energy. However, creating a nuclear fusion device with the ability to efficiently produce energy is a challenge to modern engineering. The tokamak is a device that has been designed to produce power through nuclear fusion. Finding the …
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Investigation of sub-meter shields for a low aspect ratio D-T Tokamak fusion reactor
A significant effort is being made by fusion researchers to minimize the total size of magnetic fusion devices on the path toward developing fusion energy. The spherical tokamak, which has a very low aspect ratio, is the most promising of the compact magnetic fusion reactor designs. This …
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Performance impact of ion sources in Inertial Electrostatic Confinement devices
… Inertial Electrostatic Confinement (IEC) based fusion devices, so as to improve their effectiveness as low cost, portable neutron sources, a novel use of ion sources is proposed as a means of increasing fusion reaction rate at similar power levels. This paper aims to determine the success and …
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Thermal Hydraulic numerical analysis of Fusion superconducting magnet systems
… plant (DEMO) with the purpose to harness the fusion energy for peaceful and constructive purposes. ITER uses the sueperconducting magnet systems for trapping and maneuvering plasma inside the giant tokamak machines. Superconductivity only entails under the critical conditions of temperature, …
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Sputter deposition and plasma modification of tungsten alloys for nuclear fusion applications
The ITER reactor aims to be first thermonuclear fusion device to demonstrate net fusion power. Critical plasma-facing components in the reactor will be made of tungsten, but helium plasma irradiation is known to embrittle tungsten metal. A future reactor will therefore need an alternative material …
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Sputter deposition and plasma modification of tungsten alloys for nuclear fusion applications
The ITER reactor aims to be first thermonuclear fusion device to demonstrate net fusion power. Critical plasma-facing components in the reactor will be made of tungsten, but helium plasma irradiation is known to embrittle tungsten metal. A future reactor will therefore need an alternative material …
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Hybrid Illinois Device for Research and Applications material analysis test-stand development for characterization of fusion plasma-material interactions
The Hybrid Illinois Device for Research and Applications (HIDRA) at the University of Illinois at Urbana-Champaign (UIUC) is the only tokamak-stellarator hybrid that is wholly dedicated to the study of material science, mainly research pertaining to fusion plasma facing components (PFCs). HIDRA’s …
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Interaction of plasmas with lithium and tungsten fusion plasma facing components
… outstanding issues in magnetic confinement fusion is the interaction of the fusion plasma with the first wall of the device; an interaction which is strongest in the divertor region. Erosion, melting, sputtering, and deformation are all concerns which inform choices of divertor material. Of …
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Technology and engineering of liquid lithium for fusion applications
Many outstanding issues in tokamak fusion arise from the interaction of the fusion plasma with the first wall of the device, particularly in the divertor of the tokamak. Edge cooling, impurity generation, and first wall erosion among others all have root causes that lie in particle and energy …
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Development of accelerator based spatially resolved ion beam analysis techniques for the study of plasma materials interactions in magnetic fusion devices
Plasma-material interactions (PMI) in magnetic fusion devices pose significant scientific and engineering challenges for the development of steady-state fusion power reactors. Understanding PMI is crucial for the develpment of magnetic fusion devices because fusion plasmas can significantly modify …
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Development of high energy pulsed plasma simulator for plasma-lithium trench experiment
… for a liquid lithium infused trench (LiMIT) device, a pulsed plasma source utilizing a theta pinch in conjunction with a coaxial plasma accelerator has been developed. An overall objective of the project is to develop a compact device that can produce 100 MW/m2 to 1 GW/m2 of plasma heat flux …
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Experimental and computational magnetic surface mapping of the HIDRA stellarator
HIDRA, the Hybrid Illinois Device for Research and Applications, is a newly acquired fusion device by the University of Illinois at Urbana-Champaign. It is an l = 2 machine with a five-fold toroidal symmetry, that was previously run by the Max-Planck-Institut für Plasmaphysic in Greifswald under …
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