Modeling of DIII-D noble gas puff and pump experiments Metadata

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Title

  • Main Title Modeling of DIII-D noble gas puff and pump experiments

Creator

  • Author: Hogan, J.T.
    Creator Type: Personal
  • Author: Wade, M.
    Creator Type: Personal
  • Author: Maingi, R.
    Creator Type: Personal
  • Author: Owen, L.
    Creator Type: Personal
    Creator Info: Oak Ridge National Lab., TN (United States)
  • Author: Schaffer, M.
    Creator Type: Personal
  • Author: West, P.
    Creator Type: Personal
    Creator Info: General Atomics Co., San Diego, CA (United States)

Contributor

  • Sponsor: United States. Department of Energy. Office of Energy Research.
    Contributor Type: Organization
    Contributor Info: USDOE Office of Energy Research, Washington, DC (United States)

Publisher

  • Name: Oak Ridge National Laboratory
    Place of Publication: Tennessee
    Additional Info: Oak Ridge National Lab., TN (United States)

Date

  • Creation: 1997-08-01

Language

  • English

Description

  • Content Description: Previous DIII-D experiments that induced a D{sup +} flow in the scrap-off layer (SOL) showed that this flow increased the divertor concentration of extrinsically injected impurities (neon, argon). These impurity fueling and exhaust (or puff and pump) experiments raise a number of modeling issues: the effect of edge-localized modes (ELMs) in regulating impurity core accumulation; the particle balance of the extrinsic impurities; the relation between divertor and plenum enrichment; and the effect of features unique to the present DIII-D Advanced Divertor configuration, specifically, the localized back-conductance of D{sub 2} and impurities from the baffle plenum in the outboard divertor region. To aid in understanding the relations between these processes, models have been improved: for core impurity transport to include ELM effects, and for divertor models to treat helium, neon, and argon transport with DIII-D--specific configuration effects. The models have been used to analyze a series of experiments in which neon and argon were first continuously injected (in the divertor private flux region) for 1.5 s, and then exhausted by the DIII-D cryopumping system. Deuterium was puffed at rates of 80 Torr L/s and 150 Torr L/s from the midplane and the divertor private region in these experiments. Results of the simulations are given.
  • Physical Description: 5 p.

Subject

  • Keyword: Ion Drift
  • STI Subject Categories: 70 Plasma Physics And Fusion
  • Keyword: Doublet-3 Device
  • Keyword: Plasma Simulation
  • Keyword: Divertors
  • Keyword: Plasma Impurities
  • Keyword: Charged-Particle Transport
  • Keyword: Edge Localized Modes
  • Keyword: Gas Injection

Source

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

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Other: DE97007763
  • Report No.: CONF-9706131--8
  • Grant Number: AC05-96OR22464
  • Office of Scientific & Technical Information Report Number: 510443
  • Archival Resource Key: ark:/67531/metadc694031

Note

  • Display Note: INIS; OSTI as DE97007763