1. Long-distance correlations in TCABR biasing experiments
- Author
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Machida, Munemasa, 1950, Ronchi, Gilson, 1985, Schmutzler, Luís Melchert Faber, 1964, and UNIVERSIDADE ESTADUAL DE CAMPINAS
- Subjects
Plasma (Ionized gases) ,Turbulência de plasma ,Langmuir probes ,Artigo original ,Plasma (Gases ionizados) ,Sondas de Langmuir ,Plasma turbulence - Abstract
Agradecimentos: This work was supported by FINEP (Financier of Studies and Projects), FAPESP (Supporting Agency for the Research of the State of Sao Paulo), IAEA (International Atomic Energy Agency) and the National Fusion Network Abstract: Long-distance correlations (LDCs) of plasma potential fluctuations in the plasma edge have been investigated in the TCABR tokamak in the regime of edge biasing H-mode using an array of multi-pin Langmuir probes. This activity was carried out as part of the scientific programme of the 4th IAEA Joint Experiment (2009). The experimental data confirm the effect of amplification of LDCs in potential fluctuations during biasing recently observed in stellarators and tokamaks. For long toroidal distances between probes, the cross-spectrum is concentrated at low frequencies f < 60 kHz with peaks at f < 5 kHz, f = 13-15 kHz and f similar to 40 kHz and low wave numbers with a maximum at k = 0. The effects of MHD activity on the LDCs in potential fluctuation are investigated FINANCIADORA DE ESTUDOS E PROJETOS - FINEP FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP Fechado
- Published
- 2012