Neutral beam heating of a RFP plasma in MST
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Calibration of an advanced neutral particle analyzer for the Madison Symmetric Torus reversed-field pinch.
A new E∥B neutral particle analyzer, which has recently been installed on Madison Symmetric Torus (MST) reversed-field pinch (RFP), has now been calibrated, allowing the measurement of the fast ion density and energy distribution. This diagnostic, dubbed the advanced neutral particle analyzer (ANPA), can simultaneously produce time resolved measurements of the efflux of both hydrogen and deuter...
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Energy confinement comparable with tokamak quality is achieved in the Madison Symmetric Torus (MST) reversed field pinch (RFP) at a high beta and low toroidal magnetic field. Magnetic fluctuations normally present in the RFP are reduced via parallel current drive in the outer region of the plasma. In response, the electron temperature nearly triples and beta doubles. The confinement time increa...
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Confinement of both high energy and high temperature ions has been investigated in the Madison Symmetric Torus (MST) Reversed Field Pinch (RFP), both in standard plasmas with magnetic stochasticity, and improved confinement plasmas in which stochasticity is reduced. We find that (1) energetic ions (produced by neutral beam injection) are very well-confined in the standard RFP plasma despite the...
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Innovative charge-exchange recombination spectroscopy !CHERS", motional Stark effect !MSE", and Rutherford scattering diagnostics are now in operation on the Madison Symmetric Torus !MST" reversed-field pinch !RFP". The CHERS diagnostic measures impurity ion flow and temperature, localized to 2 cm with high time resolution !#100 kHz". A spectral MSE diagnostic has been in use for five years, me...
متن کاملProposal of Density and Electrostatic Potential Fluctuation Measurements in the Madison Symmetric Torus with a Heavy Ion Beam Probe
A 200 keV heavy ion beam probe (HIBP) system is being installed on the Madison Symmetric Torus (MST) reversed eld pinch (RFP). Measurements of electron density uctuations and electrostatic potential uctuations in MST are proposed here. For the rst time particle transport induced by electrostatic eld uctuations in the core region of MST can be measured through the simultaneous measurement of ele...
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تاریخ انتشار 2013