Abstract
A feedback control system using an ion beam as a remote suppressor has been previously shown to be very effective in suppressing plasma instabilities in the Columbia Linear Machine. Here we present experimental measurements of the effect of this feedback system on anomalous particle transport, as determined from the cross correlation of density and potential fluctuations. We show that feedback reduces transport due to a rotational E\ifmmode\times\else\texttimes\fi{}B mode by up to a factor of 3 in this experiment. Also, we show that feedback control does not alter the scaling of particle transport with fluctuation amplitude. \textcopyright{} 1996 The American Physical Society.
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