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Updated: Mar 24, 2026

Characterization of Thermal Transport in One-dimensional Solid Materials
Published on: January 26, 2014
Particle transport and heat loads in NIO1
N Fonnesu1, M Cavenago2, G Serianni1
1Consorzio RFX (CNR, ENEA, INFN, Università di Padova, Acciaierie Venete) Corso Stati Uniti 4, 35127 Padova, Italy.
Abstract:
NIO1 is a compact radio frequency ion source designed to generate a 60 kV-135 mA hydrogen negative ion beam and it aims at continuous operation, which implies a detailed thermo-mechanical analysis of the beam-facing components, in particular, the accelerator grids. A 3D analysis of the entire NIO1 beam has been performed for the first time with a fully 3D version of EAMCC, a relativistic particle tracking code for the calculation of the grid power deposition induced by particle impacts. According to the results presented in this paper, secondary and co-extracted electrons cause a non-negligible heat load on the grids, where different high-power density regions, within reasonable sustainable standard limits, are calculated.
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