Finite elements numerical codes as primary tool to improve beam optics in NIO1

C. Baltador, M. Cavenago, P. Veltri, G. Serianni

Research output: Contribution to conferencePaper

5 Citations (Scopus)

Abstract

The RF negative ion source NIO1, built at Consorzio RFX in Padua (Italy), is aimed to investigate general issues on ion source physics in view of the full-size ITER injector MITICA as well as DEMO relevant solutions, like energy recovery and alternative neutralization systems, crucial for neutral beam injectors in future fusion experiments. NIO1 has been designed to produce 9 H- beamlets (in a 3x3 pattern) of 15mA each and 60keV, using a three electrodes system downstream the plasma source. At the moment the source is at its early operational stage and only operation at low power and low beam energy is possible. In particular, NIO1 presents a too strong set of SmCo co-extraction electron suppression magnets (CESM) in the extraction grid (EG) that will be replaced by a weaker set of Ferrite magnets. A completely new set of magnets will be also designed and mounted on the new EG that will be installed next year, replacing the present one. In this paper, the finite element code OPERA 3D is used to investigate the effects of the three sets of magnets on beamlet optics. A comparison of numerical results with measurements will be provided where possible.
Original languageEnglish
DOIs
Publication statusPublished - 9 Aug 2017
Externally publishedYes
Event5th International Symposium on Negative Ions, Beams and Sources, NIBS 2016 - Oxford, United Kingdom
Duration: 9 Aug 2017 → …

Conference

Conference5th International Symposium on Negative Ions, Beams and Sources, NIBS 2016
CountryUnited Kingdom
CityOxford
Period9/8/17 → …

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Baltador, C., Cavenago, M., Veltri, P., & Serianni, G. (2017). Finite elements numerical codes as primary tool to improve beam optics in NIO1. Paper presented at 5th International Symposium on Negative Ions, Beams and Sources, NIBS 2016, Oxford, United Kingdom. https://doi.org/10.1063/1.4995749