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dc.contributor.authorSeltzman, Andrewen_US
dc.date.accessioned2008-05-22T17:08:56Z
dc.date.available2008-05-22T17:08:56Z
dc.date.issued2008-05-05en_US
dc.identifier.urihttp://hdl.handle.net/1853/21828
dc.description.abstractTraditional inertial electrostatic confinement (IEC) fusion reactor designs utilize an ion accelerating grid fabricated out of a refractory metal capable of operating at high temperatures to radiate off heat imparted by ion-grid collisions. Unfortunately, the high gird temperature allows for a substantial thermionic electron emission current, requiring a high power draw and significantly reducing reactor efficiency. Further, electrons emitted from the grid are accelerated into the reactor shell where they generate a significant amount of bremsstrahlung x-rays requiring additional shielding and increasing system size and weight. Presented is a novel modification to the traditional implementation of IEC fusion reactor, designed to improve operating efficiency by reducing electron emission from the grid. A liquid cooled grid design is utilized to reduce thermionic electron emission, allowing for higher plasma densities, and greater input power while improving system efficiency and reducing x-ray output. The resulting low grid temperatures substantially reduce thermionic electron emission and greatly improve reactor efficiency by reducing current draw from the central grid. The reduction of thermionic electron emission will eliminate the majority of bremsstrahlung x-ray generation thereby reducing shielding requirements. By measuring the heat deposited into the coolant, the grid cooling system may also be used as a diagnostic tool to study the physics involved in IEC reactors. In this manner, grid transparency may be directly measured as a function of ion bombardment heating. By modifying the confinement scheme of the reactor and subsequently evaluating the energy flux to the grid through ion collisions, greater energy and particle confinement times may be obtained.en_US
dc.publisherGeorgia Institute of Technologyen_US
dc.subjectInertial electrostatic confinementen_US
dc.subjectIECen_US
dc.subjectFusion reactoren_US
dc.subjectNeutron sourceen_US
dc.subjectThermionic emissionen_US
dc.subjectSecondary emissionen_US
dc.subjectDeuteriumen_US
dc.subjectIon bombardmenten_US
dc.subjectIon collisionen_US
dc.subjectGrid heatingen_US
dc.subjectActive cooling systemen_US
dc.subjectGrid transparencyen_US
dc.subjectBremsstrahlung x-raysen_US
dc.subjectElectron currenten_US
dc.subjectPlasma physicsen_US
dc.titleDesign of an actively cooled grid system to improve efficiency in inertial electrostatic confinement fusion reactorsen_US
dc.typeUndergraduate Thesisen_US
dc.contributor.departmentPhysicsen_US
dc.description.advisorCommittee Member/Second Reader: Dwayne Blaylock; Faculty Mentor: Chandra Ramanen_US


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