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 CHITARIN1,3), Nicolò Alvise FERRON4), Roberto PASQUALOTTO1), Emanuele SARTORI1,3), 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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