Search for dissertations about: "tokamaks"

Showing result 1 - 5 of 58 swedish dissertations containing the word tokamaks.

  2. 1. Runaway-electron model development and validation in tokamaks

    Author : Mathias Hoppe; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; magnetic confinement fusion; Fokker--Planck equation; synchrotron radiation; tokamaks; runaway-electrons; plasma physics;

    Abstract : Magnetic confinement fusion (MCF), in which a hot plasma at more than 100 million kelvin is confined using magnetic fields, is the most successful fusion energy concept developed to date. After decades of research, MCF devices designed to demonstrate a positive net energy output are being constructed, completing a crucial milestone on the path to making fusion a commercially viable energy source. READ MORE

  4. 2. Material migration in tokamaks : Erosion-deposition patterns and transport processes

    Author : Armin Weckmann; Marek Rubel; Rudolf Neu; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEXTOR; fusion; plasma physics; transport; migration; tracers; tokamak; limiter; divertor; high-Z; ion beam analysis; Rutherford backscattering; Nuclear reaction analysis; Elastic recoil detection analysis; Electrical Engineering; Elektro- och systemteknik;

    Abstract : Controlled thermonuclear fusion may become an attractive future electrical power source. The most promising of all fusion machine concepts is called a tokamak. The fuel, a plasma made of deuterium and tritium, must be confined to enable the fusion process. It is also necessary to protect the wall of tokamaks from erosion by the hot plasma. READ MORE

  5. 3. Plasma-Facing Components in Tokamaks : Material Modification and Fuel Retention

    Author : Darya Ivanova; Marek Rubel; Bernard Pégourié; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; magnetic confinement fusion; plasma-facing components; plasma-facing materials; fuel inventory; erosion and deposition;

    Abstract : Fuel inventory and generation of carbon and metal dust in a tokamak are perceived to be serious safety and economy issues for the steady-state operation of a fusion reactor, e.g. ITER. READ MORE

  6. 4. Plasma-Facing Components in Tokamaks : Studies of Wall Conditioning Processes and Plasma Impact on Diagnostic Mirrors

    Author : Álvaro García Carrasco; Marek Rubel; Marco Cecconello; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Plasa-wall interactions; wall conditioning; tracers; diagnostic mirrors; ICWC; Physics; Fysik;

    Abstract : Understanding of material migration and its impact on the formation of co-deposited mixed material layers on plasma-facing components is essential for the development of fusion reactors. This thesis focuses on this topic. It is based on experiments performed at JET and TEXTOR tokamaks. READ MORE

  7. 5. Kinetic modeling of runaway-electron dynamics in partially ionized plasmas

    Author : Linnea Hesslow; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; runaway electrons; tokamaks; plasma physics; magnetic confinement fusion; electron-ion collisions; Fokker-Planck equation;

    Abstract : An essential result of kinetic plasma physics is the runaway phenomenon, whereby a fraction of an electron population can be accelerated to relativistic energies. Such runaway electrons are formed in astrophysical settings, but are also of great practical relevance to fusion research. READ MORE