Core transport improvement during poloidal current drive in the RFX reversed field pinch

R. Bartiromo, P. Martin, S. Martini, T. Bolzonella, A. Canton, P. Innocente, L. Marrelli, A. Murari, R. Pasqualotto

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Abstract

We describe plasma profiles evolution during pulsed poloidal current drive experiments performed with the RFX reversed field pinch device. With external drive of edge poloidal current, magnetic fluctuations are reduced suggesting a concomitant reduction of the spontaneous dynamo action. The electron temperature profile is seen to peak in the plasma core, consistently with a reduction of the heat conductivity due to a substantial decrease of MHD dynamo fluctuations. Our results also indicate that the magnetic turbulence due to these fluctuations, which dominates heat transport in the core of the reverse field pinch configuration, does not drive an appreciable heat flux at the edge. © 1999 The American Physical Society.
Original languageEnglish
Pages (from-to)1462 - 1465
Number of pages4
JournalPhysical Review Letters
Volume82
Issue number7
DOIs
Publication statusPublished - 1999
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Bartiromo, R., Martin, P., Martini, S., Bolzonella, T., Canton, A., Innocente, P., ... Pasqualotto, R. (1999). Core transport improvement during poloidal current drive in the RFX reversed field pinch. Physical Review Letters, 82(7), 1462 - 1465. https://doi.org/10.1103/PhysRevLett.82.1462