Turbulence in plasma surface interaction holds crucial uncertainties for its impact on material erosion in the operation of fusion reactors. In this thesis, the design, development and operation of a Thomson scattering diagnostic and its novel implementation with fast visual imaging created a versatile tool to investigate intermittently occuring plasma oscillations. Specifically, ballistic transport events in the plasma edge, constituting turbulent transport, have been targeted in this thesis. With the help of a custom photon counting algorithm, the conditional averaging technique was applied on Thomson scattering for the first time to allow spatial and pseudo-time-resolved measurements. Since plasma turbulence and the emerging transport phenomena are comparable in most magnetized devices, the diagnostic development and the results from the linear plasma device PSI-2 are useful for an implementation of similar techniques in larger fusion experiments. Furthermore, the obtained results indicate a strong enhancement of erosion with turbulent transport and thus underline the importance of dedicated experiments investigating plasma turbulence in the framework of erosion in future fusion reactors.
| ISBN: | 9783030125387 |
| Publication date: | 14th August 2020 |
| Author: | Michael Hubeny |
| Publisher: | Springer Nature Switzerland AG |
| Format: | Paperback |
| Pagination: | 126 pages |
| Series: | Springer Theses |
| Genres: |
Plasma physics Electrical engineering Energy technology and engineering Engineering applications of surface coatings and films Tribology (friction and lubrication) Materials science |
Turbulence in plasma surface interaction holds crucial uncertainties for its impact on material erosion in the operation of fusion reactors. In this thesis, the design, development and operation of a Thomson scattering diagnostic and its novel implementation with fast visual imaging created a versatile tool to investigate intermittently occuring plasma oscillations. Specifically, ballistic transport events in the plasma edge, constituting turbulent transport, have been targeted in this thesis. With the help of a custom photon counting algorithm, the conditional averaging technique was applied on Thomson scattering for the first time to allow spatial and pseudo-time-resolved measurements. Since plasma turbulence and the emerging transport phenomena are comparable in most magnetized devices, the diagnostic development and the results from the linear plasma device PSI-2 are useful for an implementation of similar techniques in larger fusion experiments. Furthermore, the obtained results indicate a strong enhancement of erosion with turbulent transport and thus underline the importance of dedicated experiments investigating plasma turbulence in the framework of erosion in future fusion reactors.
The Dynamics of Electrons in Linear Plasma Devices and Its Impact on Plasma Surface Interaction features in the following genres: Plasma physics, Electrical engineering, Energy technology and engineering, Engineering applications of surface coatings and films, Tribology (friction and lubrication), Materials science
The Dynamics of Electrons in Linear Plasma Devices and Its Impact on Plasma Surface Interaction is available in Paperback, Hardback
The Dynamics of Electrons in Linear Plasma Devices and Its Impact on Plasma Surface Interaction was written by Michael Hubeny and published by Springer Nature Switzerland AG
The Dynamics of Electrons in Linear Plasma Devices and Its Impact on Plasma Surface Interaction has 126 pages
Yes it is part of Springer Theses series
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