A comprehensive 2-D divertor data set from DIII-D for edge theory validation

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A comprehensive set of experiments has been carried out on the DIII-D tokamak to measure the 2-D (R,Z) structure of the divertor plasma in a systematic way using new diagnostics. Measurements cover the divertor radially from inside the X-point to the outer target plate and vertically from the target plate to above the X-point. Identical, repeatable shots were made, each having radial sweeps of the X-point and divertor strike points, to allow complete plasma and radiation profile measurements. Data have been obtained in ohmic, L-mode, ELMing H-mode, and reversed B{sub T} operation ({gradient}B drift away from the X-point). In addition, ... continued below

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8 p.

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Fenstermacher, M.E.; Allen, S.L. & Hill, D.N. February 1, 1996.

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Description

A comprehensive set of experiments has been carried out on the DIII-D tokamak to measure the 2-D (R,Z) structure of the divertor plasma in a systematic way using new diagnostics. Measurements cover the divertor radially from inside the X-point to the outer target plate and vertically from the target plate to above the X-point. Identical, repeatable shots were made, each having radial sweeps of the X-point and divertor strike points, to allow complete plasma and radiation profile measurements. Data have been obtained in ohmic, L-mode, ELMing H-mode, and reversed B{sub T} operation ({gradient}B drift away from the X-point). In addition, complete measurements were made of radiative divertor plasmas with a Partially Detached Divertor (PDD) induced by D{sub 2} injection and with a Radiating Mantle induced by Impurity injection (RMI) using neon and nitrogen. The data set includes first observations of the radial and poloidal profiles of the X-point, inner and outer leg plasmas in PDD and RMI radiative divertor operation. Preliminary data analysis shows that intrinsic impurities play a critical role in determining the SOL and divertor conditions.

Physical Description

8 p.

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INIS; OSTI as DE97007048

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  • 5. international workshop on plasma edge theory (PET) in fusion devices, Asilomar, CA (United States), 4-6 Dec 1995

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  • Other: DE97007048
  • Report No.: GA--A22273
  • Report No.: CONF-951291--1
  • Grant Number: FG05-88ER51115;AC05-96OR22464;AC04-94AL85000;FG05-88ER53266;FG03-95ER54294;W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 516053
  • Archival Resource Key: ark:/67531/metadc694462

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  • February 1, 1996

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  • Aug. 14, 2015, 8:43 a.m.

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  • July 28, 2016, 8:19 p.m.

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Fenstermacher, M.E.; Allen, S.L. & Hill, D.N. A comprehensive 2-D divertor data set from DIII-D for edge theory validation, article, February 1, 1996; Tennessee. (digital.library.unt.edu/ark:/67531/metadc694462/: accessed August 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.