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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:3
UID:UW-Physics-Event-8045
DTSTART:20221128T180000Z
DTEND:20221129T000000Z
DTSTAMP:20260414T073859Z
LAST-MODIFIED:20221128T033413Z
LOCATION:1610 Engineering Hall
SUMMARY:Advanced Approaches in Stellarator Optimization\, Plasma Physi
 cs (Physics/ECE/NE 922) Seminar\,  Sophia Henneberg\, IPP Greifswald
DESCRIPTION:Stellarators possess three-dimensional magnetic fields to 
 generate external rotational transform -- rotational transform solely 
 generated by the coils’ magnetic field. This reduces or even elimina
 tes the need for generating toroidal plasma currents\, which can lead 
 to instabilities such as disruptions. However\, the three-dimensionali
 ty can in general involve some drawbacks\, e.g.\, more complicated coi
 ls are typically needed compared to the axisymmetric case. Nonetheless
 \, with careful exploitation of the large design space via optimizatio
 n\, the apparent disadvantages can be diminished.<br>
\nIn stellarator
  optimization studies\, the boundary of the plasma is usually describe
 d by Fourier series that are not unique: several sets of Fourier coeff
 icients describe approximately the same boundary shape. A simple metho
 d for eliminating this arbitrariness is proposed and shown to work wel
 l in practice. Additionally\, we investigate the mathematical structur
 e of the various inter-related calculations that underpin the integrat
 ed stellarator optimization problem to better understand how the equil
 ibrium calculation\, the coil calculation\, and the optimization calcu
 lation communicate with each other.<br>
\n <br>
\nBio<br>
\nDr. Sophia
  Henneberg is a researcher in the stellarator theory group at IPP Grei
 fswald. Her current research focuses on analytic and numeric approache
 s to stellarator optimization. She obtained her PhD at the University 
 of York in 2016. Before her PhD she completed her Fulbright year with 
 a master’s degree in Madison\, Wisconsin.
URL:https://www.physics.wisc.edu/events/?id=8045
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