【場所】 研究Ⅰ期棟５階５０１セミナー室（A1-501）および Online (Zoom)
*Senior Researcher, Italian National Council and Consorzio RFX
*Project leader for the scientific exploitation at the ITER neutral beam test facility
【講演題目】 Overview of the Neutral Beam Injector for ITER
A review is given of the first 3.5 years of SPIDER operations and of the lessons learned therein, regarding the current of negative ions at perveance match, the beam divergence, and the overall plasma and beam uniformity. Particularly, the strategy to improve the SPIDER performances will be described, which results from detailed diagnostic capabilities combined with a numerical effort, applied to the interpretation of the experimental findings.
In parallel, developments on MITICA are underway, including the manufacturing of the beam source and the beamline components. Power supplies and auxiliary plants have been installed. Integration, commissioning, and tests of the 1MV power supplies are essential for this first-of-kind system, unparalleled both in the research and industry field: while insulating tests of high voltage components were successfully completed, during power integrated tests insulation breakdown led to a few component failures. Phenomena have been addressed and solutions for repairing and improving the system were developed.