TheReversed-Field eXperiment (RFX) is the largestreversed field pinch device presently in operation, situated inPadua,Italy. It was constructed from 1985 to 1991, and has been in operation since 1992.[1]
The experiments carried out in the last two decades with two large RFP machines (MST in Madison, Wisconsin[2] and RFX in Padova[3]) provided new insight on the physical phenomena taking place in magnetically confined plasma dynamics.[4][5]
RFX was built between 1985 and 1991. In RFX, an extremely high current is induced (up to 2 MA); combined with a voltage on the toroidal turn of 20 Volts, 40 MW are dissipated during the discharge, so that heating systems are not mandatory. In the period 2001-2004, RFX was modified (RFX-mod) to introduce an active control system based on 192 saddle coils surrounding the torus, active with characteristic feedback times greater than 50 ms. It is the first large-scale machine, of the RFP type, that reaches plasma currents of 2 MA and sustains them for about half a second. Since 2015 it is being upgraded.
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45°23′28″N11°55′47″E / 45.3912°N 11.9298°E /45.3912; 11.9298
