30 June 2025
Instituto Superior Técnico - Campus Alameda
Europe/Lisbon timezone

Plasma current ramp up stability analysis in JET and JT-60SA

30 Jun 2025, 16:00
15m
PA1 (Instituto Superior Técnico - Campus Alameda)

PA1

Instituto Superior Técnico - Campus Alameda

Av. Rovisco Pais 1, 1049-001 Lisboa
PIC2 Project Nuclear and Plasma Physics

Speaker

Gonçalo Maia Esteves

Description

This project focused on the preparatory work for a master's thesis on magnetohydrodynamic (MHD) stability analysis of the plasma current ramp-up phase in Tokamak devices, with particular attention to the JET and JT-60SA reactors. As nuclear fusion emerges as a promising clean energy source, understanding and controlling instabilities during plasma initiation is essential to improving reactor performance. The report introduces the theoretical framework of ideal MHD, including equilibrium configurations, surface quantities, and the Grad–Shafranov equation. Emphasis is placed on the energy principle, which underpins linear MHD stability analysis, allowing the identification of potential instabilities, either pressure-driven or current-driven, through analysis of the system's potential energy variation.

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