Increased confinement and beta by inductive poloidal current drive in the RFP

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Description

Progress in understanding magnetic-fluctuation-induced transport in the reversed field pinch (RFP) has led to the idea of current profile control to reduce fluctuations and transport. With the addition of inductive poloidal current drive in the Madison Symmetric Torus (MST), the magnetic fluctuation amplitude is halved, leading to a four- to five-fold increase in the energy confinement time to {tau}{sub E}{approximately}5 ms as a result of both decreased plasma resistance and increased stored thermal energy. The record low fluctuation amplitude coincides with a record high electron temperature of {approximately}600 eV (for MST), and beta {beta} = 2{mu}{sub 0}<p> / B(a){sup 2} ... continued below

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20 p.

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Sarff, J.S.; Lanier, N.E.; Prager, S.C. & Stoneking, M.R. October 1, 1996.

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Description

Progress in understanding magnetic-fluctuation-induced transport in the reversed field pinch (RFP) has led to the idea of current profile control to reduce fluctuations and transport. With the addition of inductive poloidal current drive in the Madison Symmetric Torus (MST), the magnetic fluctuation amplitude is halved, leading to a four- to five-fold increase in the energy confinement time to {tau}{sub E}{approximately}5 ms as a result of both decreased plasma resistance and increased stored thermal energy. The record low fluctuation amplitude coincides with a record high electron temperature of {approximately}600 eV (for MST), and beta {beta} = 2{mu}{sub 0}<p> / B(a){sup 2} increases from 6% to 8% compared with conventional MST RFP plasmas. Other improvements include increased particle confinement and impurity reduction. 19 refs., 4 figs., 1 tab.

Physical Description

20 p.

Notes

INIS; OSTI as DE97000177

Medium: P; Size: 20 p.

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  • Other Information: PBD: Oct 1996

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  • Other: DE97000177
  • Report No.: DOE/ER/54345--283
  • Grant Number: FG02-96ER54345
  • DOI: 10.2172/419957 | External Link
  • Office of Scientific & Technical Information Report Number: 419957
  • Archival Resource Key: ark:/67531/metadc686920

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • October 1, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • April 7, 2017, 7:09 p.m.

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Sarff, J.S.; Lanier, N.E.; Prager, S.C. & Stoneking, M.R. Increased confinement and beta by inductive poloidal current drive in the RFP, report, October 1, 1996; United States. (digital.library.unt.edu/ark:/67531/metadc686920/: accessed December 11, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.