Comparison of discharges with core transport barriers on DIII-D and JET

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The basic phenomenology of discharges with core transport barriers is the same for DIII-D and JET. The limitations on performance in both cases are well described by MHD stability calculations. Since the discharge behavior of the two machines is so similar, it seems reasonable to apply a simple parameterization of fusion performance which describes well the best performance discharges on DIII-D. The highest fusion performance shot on JET has Q{sub DD} = 3.1 10{sup {minus}3} at 3.2 MA. Scaling from the highest Q{sub DD} DIII-D single-null discharge would predict Q{sub DD} = 4.2 10{sup {minus}3} for JET. Raising the plasma ... continued below

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7 p.

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Luce, T.C.; Alper, B. & Challis, C.D. July 1997.

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Description

The basic phenomenology of discharges with core transport barriers is the same for DIII-D and JET. The limitations on performance in both cases are well described by MHD stability calculations. Since the discharge behavior of the two machines is so similar, it seems reasonable to apply a simple parameterization of fusion performance which describes well the best performance discharges on DIII-D. The highest fusion performance shot on JET has Q{sub DD} = 3.1 10{sup {minus}3} at 3.2 MA. Scaling from the highest Q{sub DD} DIII-D single-null discharge would predict Q{sub DD} = 4.2 10{sup {minus}3} for JET. Raising the plasma current to 4.0 MA would increase the projection to 6.6 10{sup {minus}3}. Realization of such performance would require significant effort to develop lower q plasmas with an H-mode edge. Because the performance is so closely tied to the current profile, this class of discharges also shows significant potential for steady state if current profile control can be demonstrated.

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7 p.

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INIS; OSTI as DE97007380

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  • 24. EPS conference on controlled fusion and plasma physics, Berchtesgaden (Germany), 9-13 Jun 1997

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  • Other: DE97007380
  • Report No.: GA-A--22645
  • Report No.: CONF-9706131--4
  • Grant Number: AC03-89ER51114;AC05-96OR22464;W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 505394
  • Archival Resource Key: ark:/67531/metadc691065

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

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  • July 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • Aug. 1, 2016, 6:33 p.m.

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Luce, T.C.; Alper, B. & Challis, C.D. Comparison of discharges with core transport barriers on DIII-D and JET, article, July 1997; San Diego, California. (digital.library.unt.edu/ark:/67531/metadc691065/: accessed October 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.