Show simple item record

dc.contributor.advisorXiao, Chijin
dc.creatorVoldiner, Igor
dc.date.accessioned2021-01-14T21:35:55Z
dc.date.available2021-01-14T21:35:55Z
dc.date.created2020-11
dc.date.issued2021-01-14
dc.date.submittedNovember 2020
dc.identifier.urihttp://hdl.handle.net/10388/13201
dc.description.abstractTransport in plasma is one of the major topics related to modern magnetically confined fusion experiments. Anomalous transport that exceeds estimations of neoclassical transport theory is usually associated with micro-scale instabilities in plasma. Microwave, Langmuir-probe and magnetic diagnostics have been used to study fluctuations of the edge plasma in the Saskatchewan Torus Modified tokamak (STOR-M). The main work includes development and test and comparison of these diagnostic tools for investigation of edge plasma fluctuations and transport. These fluctuations can play a role in particle and energy transport and are crucial for studies of improved-confinement regimes in tokamaks. The experiment set-up consists of movable triple Langmuir probe, discrete poloidal Mirnov coil array of 12 separate coils and fixed frequency ordinary mode reflectometer. Using measurements from the triple Langmuir probe at different insertions depths, the radial profiles of the mean electron temperature, plasma density, potential and, consequently, the radial electric field are obtained. Comparisons between different diagnostics are attempted when possible in order to validate models used and to determine the scope of applicability of these diagnostic tools. Along with the studies, the polidal MHD modes are extracted via application of Fourier analysis to Mirnov array signals. Strong similarity is found between the probe potential and magnetic fluctuation signals. The reflectometer signal on the other hand has shown little connections to other discharge parameters.
dc.format.mimetypeapplication/pdf
dc.subjectPlasma
dc.subjectPlasma diagnostics
dc.subjectThermonuclear fusion
dc.subjectSTOR-M
dc.subjectLangmuir probes
dc.subjectMircowave reflectometry
dc.titleEdge region fluctuation measurements in the STOR-M tokamak
dc.typeThesis
dc.date.updated2021-01-14T21:35:56Z
thesis.degree.departmentPhysics and Engineering Physics
thesis.degree.disciplinePhysics
thesis.degree.grantorUniversity of Saskatchewan
thesis.degree.levelMasters
thesis.degree.nameMaster of Science (M.Sc.)
dc.type.materialtext
dc.contributor.committeeMemberMoewes, Alexander
dc.contributor.committeeMemberTanaka, Kaori
dc.contributor.committeeMemberSmolyakov, Andrei
dc.contributor.committeeMemberAchenbach, Sven


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record