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SUMMARY:MechE Colloquium: How can we box up a star without melting the box
 ?
DTSTART:20210316T121500
DTEND:20210316T131500
DTSTAMP:20260929T023905Z
UID:524eb1eb766fa193229069d36e3588b3ea79a09b9c7f7d0bfdf58e16
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Paolo Ricci\, Swiss Plasma Center (SPC)\, EPFL School of
  Basic Sciences (SB)\nAbstract:\nIn the edge region of a fusion device the
  temperature decreases\, over only a few centimetres\, from a value ten ti
 mes higher than in the centre of the Sun\, to the room temperature of the 
 surrounding solid walls. This extreme gradient\, probably the steepest in
  the Universe\, drives highly complex phenomena\, including strong turbule
 nce\, within the plasma fusion fuel. Turbulence is more complex in plasmas
  than other fluids due to the interaction of the charged plasma particles
  with the electromagnetic fields.\n\nAt the edge of a fusion device\, turb
 ulence can involve powerful nonlinear phenomena on spatial and temporal sc
 ales spanning ten orders of magnitude. Turbulence is\, moreover\, extremel
 y anisotropic and includes the interaction of large-scale fluid and micro
 scopic kinetic phenomena\, atomic physics processes\, and complex geometry
 . Turbulence in the edge region determines the heat load on the solid wal
 l\, which must remain within the materials limits. Current empirical extra
 polations indicate these constraints may be exceeded in future fusion devi
 ces.\n\nTherefore\, understanding edge turbulence and disentangling its c
 omplexity becomes of crucial importance. In fact\, this is now recognised 
 as one of the greatest challenges for obtaining successful operation of fu
 ture fusion reactors. The goal of this talk is to shine some light on the
  pertinent physics at the edge of a fusion device and illustrate some of 
 our achievements with respect to the fusion program and beyond.\n\nBio:\nP
 aolo Ricci earned his master’s degree in nuclear engineering at the Poli
 tecnico di Torino\, Turin (Italy) in 2000 and his doctoral studies were co
 nducted at the Los Alamos National Laboratory. Paolo spent two-and-a-half
  years as a postdoctoral researcher at Dartmouth College’'s Department 
 of Physics and Astronomy. He joined the EPFL’'s Swiss Plasma Center (SP
 C)\, as a EURATOM fellow in 2006\, was named Tenure Track Assistant Profes
 sor in 2010\, and Associate Professor in 2016. He is at the head of the S
 PC theory group. Paolo is the recipient of the 2016 Teaching Prize of the 
 EPFL Section de Physique.
LOCATION:https://epfl.zoom.us/j/82207717593
STATUS:CONFIRMED
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