TY - JOUR
T1 - Comparison of current density profiles based on particle orbit-driven current in steady-state plasma on QUEST
AU - Alam, Md Mahbub
AU - Nakamura, Kazuo
AU - Xia, Fan
AU - Mitarai, Osamu
AU - Hasegawa, Makoto
AU - Tokunaga, Kazutoshi
AU - Araki, Kuniaki
AU - Zushi, Hideki
AU - Hanada, Kazuaki
AU - Fujisawa, Akihide
AU - Idei, Hiroshi
AU - Nagashima, Yoshihiko
AU - Kawasaki, Shoji
AU - Nakashima, Hisatoshi
AU - Higashijima, Aki
AU - Nagata, Takahiro
N1 - Publisher Copyright:
© 2015 Elsevier B.V.
PY - 2016
Y1 - 2016
N2 - In the present RF-driven divertor plasma of QUEST, it has been observed that orbit-driven current flows in the open magnetic surfaces outside of the closed magnetic surfaces. To observe this phenomenon and the characteristics of the orbit-driven current, current density profiles have been calculated on two different equilibrium conditions. We calculated current density profiles from particle guiding center orbits both for the fundamental and the second harmonic resonances for the 8.2 GHz electron cyclotron current drive. From this calculation, hollow current density profiles have been obtained with significant characteristics on both conditions. Only positive current distribution has been observed in the open magnetic surfaces outside of the closed magnetic surfaces.
AB - In the present RF-driven divertor plasma of QUEST, it has been observed that orbit-driven current flows in the open magnetic surfaces outside of the closed magnetic surfaces. To observe this phenomenon and the characteristics of the orbit-driven current, current density profiles have been calculated on two different equilibrium conditions. We calculated current density profiles from particle guiding center orbits both for the fundamental and the second harmonic resonances for the 8.2 GHz electron cyclotron current drive. From this calculation, hollow current density profiles have been obtained with significant characteristics on both conditions. Only positive current distribution has been observed in the open magnetic surfaces outside of the closed magnetic surfaces.
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U2 - 10.1016/j.fusengdes.2015.11.007
DO - 10.1016/j.fusengdes.2015.11.007
M3 - Article
AN - SCOPUS:84955297525
SN - 0920-3796
VL - 109-111
SP - 1624
EP - 1630
JO - Fusion Engineering and Design
JF - Fusion Engineering and Design
ER -