Search for dissertations about: "NBI heating"

Showing result 1 - 5 of 6 swedish dissertations containing the words NBI heating.

  2. 1. Diagnosing Fuel Ions in Fusion Plasmas using Neutron Emission Spectroscopy

    Author : Carl Hellesen; Göran Ericsson; Sean Conroy; William W Heidbrink; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; fusion; plasma diagnostics; neutron spectroscopy; NBI heating; ICRF heating; energetic ions; Fusion; Fusion; Nuclear physics; Kärnfysik; Applied Nuclear Physics; Tillämpad kärnfysik;

    Abstract : Neutron emission spectra, measured with the time of flight spectrometer TOFOR, at the joint European torus (JET) are presented in this thesis. TOFOR has been in use since 2005, routinely measuring the neutron emission from JET plasmas. READ MORE

  4. 2. Fast ions and turbulent particle transport in tokamaks

    Author : Frida Eriksson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NBI; numerical modelling; turbulence; drift waves; bump-on-tail; density peaking; Fusion plasma physics; wave-particle interaction;

    Abstract : The presence of highly energetic (fast) ions, be it fusion born alpha particles or ions accelerated by auxiliary heating schemes, can affect the heating and transport of all particles in the plasma through two main mechanisms. First, fast ions may excite fast ion driven instabilities. READ MORE

  5. 3. Non-linear dynamics of Alfvén eigenmodes excited by fast ions in tokamaks

    Author : Tommy Bergkvist; Torbjörn Hellsten; Fulvio Zonca; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fusion plasma; tokamak; MHD; toroidal Alfvén eigenmodes; thermonuclear alpha particles; ion cyclotron resonance heating; Electrophysics; Elektrofysik;

    Abstract : The tokamak is so far the most promising magnetic configuration for achieving a net production of fusion energy. The D-T fusion reactions result in 3.5 MeV alpha-particles, which may destabilize Alfvén eigenmodes through wave-particle interaction. READ MORE

  6. 4. On Fast-Ion Transport and Burn Control in Tokamaks

    Author : Fredrik Wising; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Fast ions, generated by e.g. neutral beam injection (NBI), radio frequency (RF) heating or nuclear reactions, play an important role in all large tokamaks. Several issues related to fast ions and burning fusion plasmas are addressed in this thesis. READ MORE

  7. 5. Neutron emission spectroscopy of fusion plasmas with a NE213 liquid scintillator at JET

    Author : Federico Binda; Göran Ericsson; Chernikova Dina; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NE213; neutron spectroscopy; liquid scintillator; nuclear; fusion; plasma;

    Abstract : Neutron diagnostics will play a fundamental role in future fusion plasma machines,where the harsh environment will make the use of many other type of diagnos-tics practically impossible. Complex techniques to measure the neutron spectrumemitted from tokamk plasmas have been developed over the years, producing stateof the art neutron spectrometers. READ MORE