Alain Simonin

TL;DR: In this paper, the authors provide a comprehensive summary of the physics involved in the process of secondary emission in a typical ITER-like negative ion electrostatic accelerator together with a precise description of the numerical method and approximations involved.

TL;DR: In this paper, a photoneutralized neutral beam (NB) system for the future fusion reactor (DEMO Tokamak) has been proposed, where a high power photon flux generated within a Fabry-Perot cavity will overlap, cross and partially photodetach the intense negative ion beam accelerated at high energy (1 or 2 MeV).

TL;DR: In this paper, a new ion source concept (Cybele source) which is based on a magnetized plasma column is presented. But the main challenge of this new injector concept is the achievement of a very high power photon flux which could be provided by 3MWFabry-Perot optical cavities implanted along the 1 MeVD−============ beam in the neutralizer stage.

TL;DR: In this article, a conceptual design of the beam source for the DEMO NBI is presented, with 20 sub-sources (two adjacent columns of 10 subsources each), following a modular design concept, with each sub-source featuring its radio frequency driver, capable of increasing the reliability and availability of the NBI, and particular attention has been paid to the issues related to reliability, availability, maintainability and inspectability.

TL;DR: In this article, a resonant antenna-based helicon plasma source with up to 10 kW at 13.56 MHz was developed and is presently under study on the Resonant Antenna Ion Device (RAID).