A significant engineering upgrade of the DIII-D neutral beam system has recently been completed, providing the ability to smoothly and independently vary the beam voltage and current. This enables greater control of the injected beam power, torque, and plasma instability drive for fusion experiments. Modifications to the high voltage equipment and the Plasma Control System were made and...
KSTAR will add a new 2-channel steady-state Electron Cyclotron Heating (ECH) launcher to its existing pair of launchers, providing 4MW of steady-state ECH power for heating and current drive.
This launcher is designed specifically for steady-state operation. Advanced features, such as fast steering with real-time position feedback for stabilization of neoclassical tearing modes, are included....
The cooling enhancement of the water-cooled resonance cavity in the design of the European 170 GHz, 1 MW gyrotron for ITER, where the peak heat flux can reach 20+ MW/m², albeit on a very short (~ 1 cm) region, is currently based on the Raschig Rings technology. As an alternative to that, mini-channels drilled in a copper annulus have been recently proposed, also based on Computational Fluid...
Since the signature of the ITER treaty in 2006, a new research programme targeting the emergence of a new generation of Neutral Beam (NB) systems for future fusion reactors has been underway at CEA, several academic laboratories in France and EPFL (Switzerland). To provide plasma heating and current drive, the NB system specifications are very demanding: a very high level of neutral power (up...
DEMO (DEMOnstration Fusion Power Plant) is a proposed nuclear fusion power plant that is intended to follow the ITER experimental reactor. The main goal of DEMO will be to demonstrate the possibility to produce electric energy from the fusion reaction. The injection of high energy neutral beams is one of the main tools to heat the plasma up to fusion conditions.
A conceptual design of the...
