Towards Automated Magnetic Divertor Design for Optimal Heat Exhaust

Maarten Blommaert; Holger Heumann; Martine Baelmans; Nicolas R. Gauger; Detlev Reiter

doi:10.1051/proc/201653004

All issues

Volume 53 (March 2016)

ESAIM: Proc., 53 (2016) 49-63

Abstract

Open Access

Issue		ESAIM: Proc. Volume 53, March 2016 CEMRACS 2014 – Numerical Modeling of Plasmas


Page(s)		49 - 63
DOI		https://doi.org/10.1051/proc/201653004
Published online		01 April 2016

ESAIM: PROCEEDINGS AND SURVEYS, March 2016, Vol. 53, p. 49-63

Towards Automated Magnetic Divertor Design for Optimal Heat Exhaust

Maarten Blommaert¹^*, Holger Heumann², Martine Baelmans³, Nicolas R. Gauger⁴ and Detlev Reiter¹

¹ Institute of Energy and Climate Research (IEK-4), FZ Jülich GmbH, D-52425 Jülich, Germany
² TEAM CASTOR, INRIA Sophia Antipolis, BP 93 06902 Sophia Antipolis, France
³ KU Leuven, Department of Mechanical Engineering, 3001 Leuven, Belgium
⁴ TU Kaiserslautern, Chair for Scientific Computing, 67663 Kaiserslautern, Germany

^* corresponding author e-mail: m.blommaert@fz-juelich.de

Abstract

Avoiding excessive structure heat loads in future fusion tokamaks is regarded as one of the greatest design challenges. In this paper, we aim at developing a tool to study how the severe divertor heat loads can be mitigated by reconfiguring the magnetic confinement. For this purpose, a free boundary equilibrium code is integrated with a plasma edge transport code to work in an automated fashion. Next, a practical and efficient adjoint based sensitivity calculation is proposed to evaluate the sensitivities of the integrated code. The sensitivity calculation is finally applied to a realistic test case and compared with finite difference sensitivity calculations.

This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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