ECE complex on T-10 tokamak

V.I. Poznyak; V.V. Pitersky; G.N. Ploskirev; E.G. Ploskirev

doi:10.1051/epjconf/20123203010

EPJ

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Proceedings

Open Access

EPJ Web of Conferences 32, 03010 (2012)
https://doi.org/10.1051/epjconf/20123203010

ECE complex on T-10 tokamak

V.I. Poznyak, V.V. Pitersky, G.N. Ploskirev and E.G. Ploskirev

RRC “Kurchatov Institute”, IFT, 123182, Kurchtov Sq. 1, Moscow, Russia, pozn@tokamak.ru

Abstract

The structure and main characteristics of ECE complex on T-10 are presented. T-10 ECE system possesses by certain features: measurements are fulfilled simultaneous on 1^st and 2^nd harmonics; frequency range of every harmonic is widened down; ECE measurements are made in two polarization at the same time; antenna system has narrow angle diagram that permits to discover several dynamic and structure peculiarities of global plasma oscillations in m/n=1/1 mode; ECE equipment is used also for measurement of emission in frequency range of magnetized Langmuir oscillations. Some results of measurements are shown: an unevenness of disturbances motion in space; appearance of rational magnetic surface on half of q=1 surface radius; strong oscillations of longitudinal electron velocity at the central plasma area; stability of distribution function of high energy electrons at plasma edge; spectrum of plasma oscillations in sawtooth regime.

© Owned by the authors, published by EDP Sciences 2012