Measurement of electron transport in the Madison Symmetric Torus Reversed Field Pinch
A recent study investigating the role of electron density fluctuations in particle transport has been conducted on the Madison Symmetric Torus reversed field pinch. Four diagnostics enabled this experiment: a high-speed multichord far-infrared laser interferometer, a multichord H array, a 64- position magnetic coil array, and a Doppler spectrometer that measured impurity ion flow fluctuations. Correlation analysis is used to elucidate the relationship among density, magnetic and impurity ion flow fluctuations. We observe that the electron density fluctuations are highly coherent with magnetic fluctuations resulting from core-resonant resistive tearing modes. Moreover, the fluctuation-induced particle transport, obtained from the correlation between electron density and flow fluctuationism indicates that the core-resonant tearing modes do not drive significant particle transport in the plasma edge. We will address these four primary diagnostics, details of the analysis techniques and principals from this study.
- Research Organization:
- University of Wisconsin-Madison (US); University of California-Los Angeles (US)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- FG02-96ER54345
- OSTI ID:
- 783593
- Report Number(s):
- DOE/ER54345-345; TRN: US0108356
- Journal Information:
- Review of Scientific Instruments, Vol. 72, Issue 1; Other Information: Submitted to Review of Scientific Instruments; Volume 72, No.1; PBD: 1 Jan 2001
- Country of Publication:
- United States
- Language:
- English
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