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Design and fabrication of a movable langmuir probe for plasma edge parameters measurement in the IR-T1 tokamak
, Article Journal of Fusion Energy ; Volume 28, Issue 3 , 2009 , Pages 296-299 ; 01640313 (ISSN) ; Ghoranneviss, M ; Emami, M ; Anvari, A ; Van Oost, G ; Sharif University of Technology
2009
Abstract
For the edge plasma parameters measurement, a movable Langmuir probe is fabricated and installed on the IR-T1 tokamak. The set-up consists of two sets of single Langmuir probes with tungsten tip movable in the radial direction. Edge plasma parameters including electron temperature, Ion density, floating potential and the corresponding radial changes are measured. Using two-point correlation technique clearly reveal that in the SOL region the poloidal propagation of floating potential fluctuation is in the direction of ion diamagnetic drift and in the edge it propagates in the electron diamagnetic drift direction. © 2009 Springer Science+Business Media, LLC