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22-27 October 2018
Mahatma Mandir Conference Centre
Asia/Kolkata timezone

The Configuration Dependence of Isotope Effects on Turbulence System in Heliotron J

24 Oct 2018, 08:30
Mahatma Mandir Conference Centre

Mahatma Mandir Conference Centre

Gandhinagar (nearest Airport: Ahmedabad), India
Poster P3 Posters


Dr Shinsuke OHSHIMA (Kyoto University)


The hydrogen/deuterium (H/D) isotope effects on fluctuations and its configuration dependence are studied in a helical device, Heliotron J. The isotope dependence of a toroidally symmetric fluctuation in low frequency range of <~4kHz,, which is considered as a zonal flow, is observed in low-density ECH plasmas in Heliotron J. The long-range toroidal correlation of the low frequency range become higher on D dominant plasmas in standard configuration of Heliotron J. Interestingly, however, different dependence on isotope ratios, smaller amplitude and coherence in the frequency range, is observed in D plasmas in the magnetic configuration with low-bumpiness. The configuration dependence can be one of factors to explain the difference in isotope effect between tokamaks and helical devices.
Paper Number EX/P3-3
Country or International Organization Japan

Primary author

Dr Shinsuke OHSHIMA (Kyoto University)


Dr Hiroyuki Okada (Institute of Advanced Energy, Kyoto University) Prof. Kazunobu Nagasaki (Institute of Advanced Energy, Kyoto University) Dr Linge Zang (Southwestern Institute of Physics) Dr Satoshi Yamamoto (Institute of Advanced Energy, Kyoto University) Dr Shinichiro KADO (Institute of Advanced Energy, Kyoto University) Dr Shinji Kobayashi (IAE, Kyoto Univ.) Dr Takashi Minami (Institute of Advanced Energy, Kyoto University) Dr Tohru MIZUUCHI (Institute of Advanced Energy, Kyoto University)

Presentation Materials