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SUMMARY:Magnetic field line chaos and fusion power
DTSTART:20221208T130000
DTEND:20221208T143000
DTSTAMP:20260916T085833Z
UID:96a0122b1804972611a235e36473646a04a0eeb88390591d4d986bb3
CATEGORIES:Conferences - Seminars
DESCRIPTION:Joaquim Loizu\nFusion power may be generated in steady-state b
 y confining hot plasmas using only external magnetic fields. These can be 
 tailored in such a way that magnetic field lines foliate toroidally nested
  surfaces that act as energy barriers for the plasma. This is the idea beh
 ind the stellarator concept\, which has experienced a renaissance in recen
 t years\, and has brought up new mathematical and physical questions. Of p
 articular importance is the calculation of equilibrium pressure limits. In
 deed\, at sufficiently high pressure a plasma generates currents that prom
 ote the destruction of magnetic surfaces and the emergence magnetic chaos\
 , thereby degrading plasma confinement. These phenomena can be modeled wit
 h three-dimensional magneto-hydrodynamics\, which is a fantastic numerical
  challenge. In this talk I will illustrate how we can predict and characte
 rize the emergence of magnetic chaos at high plasma pressures in toroidall
 y confined plasmas\, and how we can attempt at optimizing the external mag
 netic field to increase the pressure limit.  
LOCATION:GA 3 21 https://plan.epfl.ch/?room==GA%203%2021
STATUS:CONFIRMED
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