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@INPROCEEDINGS{Liang:202243,
author = {Liang, y.},
title = {{E}ffect of magnetic topology on {MHD} and transport in
magnetic confinement fusion},
reportid = {FZJ-2015-04532},
year = {2015},
abstract = {Effect of magnetic topology on MHD and transport in
magnetic confinement fusion Y. Liang *Forschungszentrum
Jülich GmbH, IEK-4, 52425 Jülich, GermanyCurrently, the
most advanced concepts for fusion confinement are the
tokamak and the stellarator. The former is toroidally
symmetric and 2D; the latter is a 3D device with a smaller
degree of symmetry. The tokamak scheme is currently a
leading variant for plasma confinement and is therefore
being used for the ITER design and is planned for the DEMO
reactor. It has recently been realized that 3D magnetic
topology effects also play a significant role in this 2D
concept. The results obtained from various tokamaks have
shown that magnetic field perturbations can either
completely suppress edge localized modes (ELMs), trigger
small ELMs during ELM free periods, or affect the frequency
and size of the type- ELMs in a controllable way, preserving
good global energy confinement [1,2]. Although the physic s
mechanism is still unclear, experimental results from those
different devices demonstrate that the magnetic topology
plays a key role in plasma confinement [3], edge MHD
stability [4], and interactions between the plasma and the
first wall, particularly with the divertor [5-7]. Recently,
3D magnetic topology effects form one of the hottest topics
in fusion research today, and understanding them is
essential for the success of future fusion devices. In this
paper, an overview of physics understanding of various 3D
effects on major MHD activities, i.e. tearing modes and edge
- localized modes, [5-7], and plasma edge [8] and divertor
transports [9-11] in magnetically confined plasmas will be
presented . In addition, comparing the advantages and
disadvantages of 2D and 3D magnetic topology effects in
magnetic confinement fusion will be discussed.},
month = {Jun},
date = {2015-06-08},
organization = {5th Asia Pacific Transport Working
Group (APTWG) International Conference,
Dalian (China), 8 Jun 2015 - 12 Jun
2015},
cin = {IEK-4},
cid = {I:(DE-Juel1)IEK-4-20101013},
pnm = {171 - Stellarator Research (POF3-171)},
pid = {G:(DE-HGF)POF3-171},
typ = {PUB:(DE-HGF)1},
url = {https://juser.fz-juelich.de/record/202243},
}