Energy balance during disruptions | Nicola Isernia

🖥️ Presenter for the FusionEPtalks #53 is Nicola Isernia, PhD student at Information technology and Electrical Engineering School, University of Naples Federico II, Italy.

🎧 Hosted by Ekaterina, FusionEPtalks team 🎤

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Date: April 27th, 2021

Conspectus:
In the present talk we shall study the global energy transfer for a fusion plasma undergoing a disruption, by the means of first principles and evolutionary MHD equilibrium models. The key role of the conducting structures surrounding the device will be highlighted, giving insight in the time constants which are relevant to the global energy transfer. Reference: N. Isernia et al 2020 Plasma Phys. Control. Fusion 62 095024

Chapters
00:00:05 - Host Intro and speaker bio
00:01:33 - Speaker Intro
00:02:01 - Motivation
00:04:19 - A macroscopic description of the phenomenology
00:05:46 - A first principle energy balance
00:11:39 - The approximate energy balance
00:13:45 - The high aspect ratio circular cross section approximation
00:18:22 - Evolutionary Equilibrium Models
00:21:26 - Experimental measurements on TCV
00:22:56 - TCV disruption - Equilibrium
00:26:02 - The poloidal magnetic energy flux
00:27:04 - TCV Energy balance
00:31:12 - JET disruption simulation Equilibrium
00:33:19 - JET disruption - Energy balance
00:35:01 - Conclusions
00:38:59 - Q&A session

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