TY  - JOUR
AU  - Blommaert, M.
AU  - Baelmans, M.
AU  - Dekeyser, W.
AU  - Gauger, N. R.
AU  - Reiter, D.
TI  - A novel approach to magnetic divertor configuration design
JO  - Journal of nuclear materials
VL  - 463
SN  - 0022-3115
CY  - Amsterdam [u.a.]
PB  - Elsevier Science
M1  - FZJ-2015-02173
SP  - 1220–1224
PY  - 2015
AB  - Divertor exhaust system design and analysis tools are crucial to evolve from experimental fusion reactors towards commercial power plants. In addition to material research and dedicated vessel geometry design, improved magnetic configurations can contribute to sustaining the diverted heat loads. Yet, computational design of the magnetic divertor is a challenging process involving a magnetic equilibrium solver, a plasma edge grid generator and a computationally demanding plasma edge simulation. In this paper, an integrated approach to efficient sensitivity calculations is discussed and applied to a set of slightly reduced divertor models. Sensitivities of target heat load performance to the shaping coil currents are directly evaluated. Using adjoint methods, the cost for a sensitivity evaluation is reduced to about two times the simulation cost of one specific configuration. Further, the use of these sensitivities in an optimal design framework is illustrated by a case with realistic Joint European Torus (JET) configurational parameters.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000358467200267
DO  - DOI:10.1016/j.jnucmat.2014.11.053
UR  - https://juser.fz-juelich.de/record/188872
ER  -