Overview on electrical issues faced during the SPIDER experimental campaigns

Alberto Maistrello; Matteo Agostini; Marco Bigi; Matteo Brombin; Mattia Dan; Riccardo Casagrande; Marco De Nardi; Alberto Ferro; Elena Gaio; Palak Jain; Francesco Lunardon; Nicolò Marconato; Diego Marcuzzi; Mauro Recchia; Tommaso Patton; Mauro Pavei; Francesco Santoro; Vanni Toigo; Loris Zanotto; Marco Barbisan; Lucio Baseggio; Marco Bernardi; Giovanni Berton; Marco Boldrin; Samuele Dal Bello; Daniele Fasolo; Luca Franchin; Raffaele Ghiraldelli; Luca Grando; Ruggero Milazzo; Antonio Pimazzoni; Andrea Rigoni; Emanuele Sartori; Gianluigi Serianni; Alastair Shepherd; Margherita Ugoletti; Barbara Zaniol; Daniele Zella; Enrico Zerbetto; Hans Decamps; Chandramouli Rotti; Pierluigi Veltri

doi:10.1016/j.fusengdes.2023.113510

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arXiv · 2304.02294

Overview on electrical issues faced during the SPIDER experimental campaigns

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Abstract

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.

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Alberto Maistrello, Matteo Agostini, Marco Bigi, Matteo Brombin, Mattia Dan, Riccardo Casagrande, Marco De Nardi, Alberto Ferro, Elena Gaio, Palak Jain, Francesco Lunardon, Nicolò Marconato, Diego Marcuzzi, Mauro Recchia, Tommaso Patton, Mauro Pavei, Francesco Santoro, Vanni Toigo, Loris Zanotto, Marco Barbisan, Lucio Baseggio, Marco Bernardi, Giovanni Berton, Marco Boldrin, Samuele Dal Bello, Daniele Fasolo, Luca Franchin, Raffaele Ghiraldelli, Luca Grando, Ruggero Milazzo, Antonio Pimazzoni, Andrea Rigoni, Emanuele Sartori, Gianluigi Serianni, Alastair Shepherd, Margherita Ugoletti, Barbara Zaniol, Daniele Zella, Enrico Zerbetto, Hans Decamps, Chandramouli Rotti, Pierluigi Veltri. 2023-04-05. Overview on electrical issues faced during the SPIDER experimental campaigns. https://doi.org/10.1016/j.fusengdes.2023.113510

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