Edge plasma measurements near the minimum-B anchor cell of GAMMA10 using Langmuir probe and calorimeter arrays | Zendy

Y. Nakashima | Zendy; Md. Khairul Islam | Zendy; T. Natori | Zendy; I. Katanuma | Zendy; T. Ohki | Zendy; Kouji Watanabe | Zendy; Y. Higashizono | Zendy; T. Cho | Zendy; Y. Ishimoto | Zendy

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Edge plasma measurements near the minimum-B anchor cell of GAMMA10 using Langmuir probe and calorimeter arrays

Author(s) -

Y. Nakashima,

Md. Khairul Islam,

T. Natori,

I. Katanuma,

T. Ohki,

Kouji Watanabe,

Y. Higashizono,

T. Cho,

Y. Ishimoto

Publication year - 2004

Publication title -

review of scientific instruments

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.605

H-Index - 165

eISSN - 1089-7623

pISSN - 0034-6748

DOI - 10.1063/1.1787577

Subject(s) - langmuir probe , plasma , calorimeter (particle physics) , magnetic field , plasma diagnostics , enhanced data rates for gsm evolution , cyclotron , ion , asymmetry , atomic physics , materials science , range (aeronautics) , physics , nuclear magnetic resonance , optics , nuclear physics , telecommunications , quantum mechanics , detector , computer science , composite material

Edge plasma diagnostic system equipped in minimum-B anchor cell of the GAMMA10 tandem mirror is described together with the measured results. Several sets of the diagnostic element consisting of a Langmuir probe and a calorimeter are placed in array on the conducting plates installed in the east anchor cell. This diagnostic system is designed to be capable of precisely investigating the spatial dependence of the edge plasma parameters. In typical ion cyclotron range of frequency-heated plasmas, detailed behavior of the edge plasma in the anchor transition regions has been measured by using this system. From these measurements a significant asymmetry of spatial profile was observed in the floating potentials. Heat flow profiles also showed the similar dependence to the probe signals. In this region there exists a strong gradient of the magnetic field strength and the direction of the observed shift is found to be consistent with that of gradient B drift for ions

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