Simulation of double-null divertor plasmas with the UEDGE code

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We describe recent modifications to the UEDGE code that enable us to simulate full double-null magnetic configurations. We present simulation results for magnetically balanced double- nulls, with and without asymmetries due to divertor recycling and cross-field drifts. Up/down electron temperature asymmetries due to recycling are weak for attached plasmas because the magnetic connection length is shorter than for comparable single-null plasmas. Cross-field drifts due to radial electric fields produce strong poloidal ion particle fluxes at the midplane in the SOL that can drive up/down asymmetries.

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511 Kilobytes pages

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Rensink , M E; Allen, S L; Porter, G D & Rognlien, T D September 21, 1999.

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We describe recent modifications to the UEDGE code that enable us to simulate full double-null magnetic configurations. We present simulation results for magnetically balanced double- nulls, with and without asymmetries due to divertor recycling and cross-field drifts. Up/down electron temperature asymmetries due to recycling are weak for attached plasmas because the magnetic connection length is shorter than for comparable single-null plasmas. Cross-field drifts due to radial electric fields produce strong poloidal ion particle fluxes at the midplane in the SOL that can drive up/down asymmetries.

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511 Kilobytes pages

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  • 7th International Workshop on Plasma Edge Theory in Fusion Devices, Tajima, Gifu (JP), 10/04/1999--10/06/1999

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  • Report No.: UCRL-JC-134341
  • Report No.: AT5010200
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 14951
  • Archival Resource Key: ark:/67531/metadc621673

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Office of Scientific & Technical Information Technical Reports

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  • September 21, 1999

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  • June 16, 2015, 7:43 a.m.

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  • Feb. 23, 2016, 3:35 p.m.

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Rensink , M E; Allen, S L; Porter, G D & Rognlien, T D. Simulation of double-null divertor plasmas with the UEDGE code, article, September 21, 1999; California. (digital.library.unt.edu/ark:/67531/metadc621673/: accessed January 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.