During my master’s degree thesis project internship on density 
limit phenomena in stellarators: “Density limit in stellarators: 
experiments, modeling, and predictions”, in collaboration with 
CIEMAT (Madrid) and Università degli studi di Trieste funded 
by Fusenet, I developed and deepen strong competence and 
knowledge on Plasma fusion in magnetic confinement physics.

Intense work has been starting with a bibliographic revision 
about the physics of the density limit in stellarators (incl. Itoh 
and Itoh J. Phys. Soc. Jpn. 57 (1988) 1269, S. Sudo et al Naucl. 
Fusion 30 (1990) 1, Ochando et al. Nucl. Fusion 37 (1997) 225, 
Wobig Plasma Phys. Control. Fusion 42 (2000) 931, Ochando 
et al. EPS 2014 P2.074, Zanca et al Nucl. Fusion 57 (2017) 
056010, Fucher et al. Nucl. Fusion 60 (2020) 036020)). 
 

After this revision, I was involved in proposing experimental 
strategies to characterize density limit in TJ-II and assess the 
leading mechanisms. These experiments have been conducted 
in the early 2024 TJ-II experimental campaign: TJ-II spring 
campaign 2024 on density limit phenomena using NBI1, 
NBI1+NBI2 heating system and H2 gas, assessing the 
comparison of experimental data with Sudo density limit 
scaling law.