Plasma and Fusion Research

Volume 13, 3405091 (2018)

Regular Articles

Particle Beams as Controllable Complex Systems: Application of the Network Theory

Vanni ANTONI¹⁾, Marco CAVENAGO²⁾, Giuseppe CHITARIN^1,3), Nicolò Alvise FERRON⁴⁾, Roberto PASQUALOTTO¹⁾, Emanuele SARTORI^1,3), Gianluigi SERIANNI¹⁾, Samir SUWEIS⁵⁾ and Pierluigi VELTRI¹⁾

1): Consorzio RFX (CNR, ENEA, INFN, UNIPD, Acciaierie Venete SpA), Corso Stati Uniti 4-35127 Padova, Italy
2): INFN-LNL, viale dell'Università n. 2, 35020 Legnaro, Italy
3): Università degli Studi di Padova, Via 8 Febbraio 2, I-35122 Padova, Italy
4): Department of Industrial Engineering, University of Padova, via Gradenigo, 6/a, 35131 Padova, Italy
5): Physics and Astronomy Dept. “G. Galilei” & CNISM, INFN, University of Padova, via Marzolo 8, 35131 Padova, Italy

(Received 28 December 2017 / Accepted 28 May 2018 / Published 10 August 2018)

Abstract

High power neutral beam injectors, like those for ITER, must satisfy very demanding parameters (40 A of negative ion current accelerated up to 1 MV for one hour). They are made of various components, which influence each other, so that the global performances eventually require the simultaneous control of several interacting parameters: thus the NBI is an example of a complex system. In the present paper, complex network theory is applied to verify the controllability conditions of the NIO1 experiment, a particle beam source operating at Consorzio RFX (Padova, Italy). Previous work on the subject is adapted to NIO1, the controllability conditions are assessed and the driver nodes are identified; first comparison between theoretical predictions and experimental data is also discussed.

Keywords

neutral beam injector, plasma heating, complex network theory

DOI: 10.1585/pfr.13.3405091

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