2 research outputs found
Overview on electrical issues faced during the SPIDER experimental campaigns
SPIDER is the full-scale prototype of the ion source of the ITER Heating
Neutral Beam Injector, where negative ions of Hydrogen or Deuterium are
produced by a RF generated plasma and accelerated with a set of grids up to
~100 keV. The Power Supply System is composed of high voltage dc power supplies
capable of handling frequent grid breakdowns, high current dc generators for
the magnetic filter field and RF generators for the plasma generation. During
the first 3 years of SPIDER operation different electrical issues were
discovered, understood and addressed thanks to deep analyses of the
experimental results supported by modelling activities. The paper gives an
overview on the observed phenomena and relevant analyses to understand them, on
the effectiveness of the short-term modifications provided to SPIDER to face
the encountered issues and on the design principle of long-term solutions to be
introduced during the currently ongoing long shutdown.Comment: 8 pages, 12 figures. Presented at SOFT 202