A comprehensive 2-D divertor data set from DIII-D for edge theory validation
- and others
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.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Texas Univ., Austin, TX (United States). Fusion Research Center
- Sponsoring Organization:
- USDOE Office of Energy Research, Washington, DC (United States)
- DOE Contract Number:
- FG05-88ER51115; AC05-96OR22464; AC04-94AL85000; FG05-88ER53266; FG03-95ER54294; W-7405-ENG-48
- OSTI ID:
- 516053
- Report Number(s):
- GA-A22273; CONF-951291-1; ON: DE97007048; TRN: 97:014873
- Resource Relation:
- Conference: 5. international workshop on plasma edge theory (PET) in fusion devices, Asilomar, CA (United States), 4-6 Dec 1995; Other Information: PBD: Feb 1996
- Country of Publication:
- United States
- Language:
- English
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