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VERSION:2.0
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SUMMARY:"Plasma Shape and Trajectory Optimizationin CEDRES++"
DTSTART:20130328T140000
DTEND:20130328T150000
DTSTAMP:20260406T020335Z
UID:3bb3ceeceba6117fa745bb2a4c9be0466e8173bbf84f529002a2a67e
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr. H. Heumann\, Department of Mathematics\, Rutgers\, New Bru
 nswick\, NJ\, USA\nIn this talk we present main ideas and first results on
  plasma shape and trajectory optimisation with CEDRES++. We aim at impleme
 nting an open-loop control approach in CEDRES++ that is capable to predict
  a priori those trajectories of externally applied control parameters\, th
 at ensure that the state of the plasma\, e.g. shape or current profile\, f
 ollows some prescribed\, desired path. This approach corresponds to a cons
 trained optimization problem that minimizes a cost function. The cost func
 tion penalises the deviation of the plasma from the desired state. The con
 straints are the system of non-linear partial differential equations that 
 describe the evolution of the plasma for given control parameters. Finding
  solutions of the non-linear constraints for given control parameters is a
  standard task in fusion research. Usually\, this is referred to as coupli
 ng of equilibrium and transport equations. Nevertheless\, an open loop app
 roach poses additional difficulties. Efficient methods for solving such op
 timization problems rely on accurate linearizations of the constraints. Su
 ch a kind of linearization\, namely the linearization of the equilibrium p
 roblem\, is the outstanding feature of CEDRES++: CEDRES++ is one of the fe
 w equilibrium codes that uses Newton iterations.
LOCATION:PPB 019
STATUS:CONFIRMED
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