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@ARTICLE{Li:904058,
      author       = {Li, Shuhao and Wang, Nengchao and Ding, Yonghua and Song,
                      Zebao and Liang, Yunfeng and Yang, Qinghu and Mao, Feiyue
                      and Huang, Zhuo and Shen, Chengshuo and Bala, Abba Alhaji
                      and Chen, Zhipeng and Chen, Zhongyong and Yang, Zhoujun and
                      Pan, Yuan},
      title        = {{M}odeling of {SOL} helical current filaments induced by
                      biased electrode on {J}-{TEXT}},
      journal      = {Plasma physics and controlled fusion},
      volume       = {63},
      number       = {11},
      issn         = {0032-1028},
      address      = {Bristol},
      publisher    = {IOP Publ.},
      reportid     = {FZJ-2021-05628},
      pages        = {115017 -},
      year         = {2021},
      note         = {kein Zugriff auf Postprint},
      abstract     = {It has been demonstrated in J-TEXT experiments that a
                      biased electrode or electrode biasing (EB) in the scrape-off
                      layer (SOL) can drive SOL helical current filaments (HCFs).
                      The bright helical radiation belts of carbon impurities in
                      the SOL indicate that SOL current flows along the magnetic
                      field lines. Based on the experimental phenomenon, three SOL
                      current models (model A, B, C) have been set-up in order to
                      understand the spatial structure of SOL current and the
                      perturbed magnetic field it generates. Model A is a
                      simplified calculation of HCFs in the cylindrical geometry,
                      and takes into account the presence of cross-field current
                      by a linear decay of current along magnetic field lines.
                      Model B take into account the actual toroidal geometry and
                      the complex path of HCFs connected from the electrode to the
                      limiters. By including the radial dependence of the
                      resistivity into model B, model C is developed and describes
                      the SOL current more perfectly than the other two models.
                      Furthermore, the model C shows that SOL helical current can
                      produces stronger boundary resonant magnetic perturbations
                      (RMPs) at the last closed flux surface (LCFS) due to the
                      consistent helixity of SOL current filaments and the
                      boundary rational surface, which may be a new way to
                      generate RMPs to control the edge-localized modes (ELMs).
                      The equivalent inductance and resistance of HCFs at
                      different edge safety factor qa are measured by applying a
                      square wave voltage. The results show that the inductance
                      and resistance of the HCFs are related to qa and the radial
                      position of the biased electrode rEB, in a qualitatively
                      consistent manner as that predicted by model C.},
      cin          = {IEK-4},
      ddc          = {620},
      cid          = {I:(DE-Juel1)IEK-4-20101013},
      pnm          = {134 - Plasma-Wand-Wechselwirkung (POF4-134)},
      pid          = {G:(DE-HGF)POF4-134},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000706859200001},
      doi          = {10.1088/1361-6587/ac2373},
      url          = {https://juser.fz-juelich.de/record/904058},
}