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Title: Simulation of the scrape-off layer plasma during a disruption

Abstract

The evolution of the scrape-off layer (SOL) during a disruption in the DIII-D tokamak is modeled using the 2-D UEDGE transport code. The focus is on the thermal quench phase when most of the energy content of the discharge is rapidly transported across the magnetic separatrix where it then flows to material surfaces or is radiated. Comparisons between the simulation and an experiment on the DIII-D tokamak are made with the heat flux to the divertor plate, and temperature and density profiles at the SOL midplane. The temporal response of the separate electron and ion heat-flux components to the divertor plate is calculated. The sensitivity of the solution to assumptions of electron heat-flux models and impurity radiation is investigated.

Authors:
; ; ;  [1]; ;  [2]
  1. Lawrence Livermore National Lab., CA (United States)
  2. General Atomics, San Diego, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab., CA (United States); General Atomics, San Diego, CA (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
372662
Report Number(s):
UCRL-JC-122529; CONF-960569-10
ON: DE96050357; TRN: 96:024965
DOE Contract Number:  
W-7405-ENG-48; AC03-89ER51114
Resource Type:
Conference
Resource Relation:
Conference: 12. international conference on plasma surface interactions in controlled fusion devices, Saint-Raphael (France), 20-26 May 1996; Other Information: PBD: 16 Mar 1996
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION; DOUBLET-3 DEVICE; DIVERTORS; U CODES; PLASMA DISRUPTION; COMPUTERIZED SIMULATION; TWO-DIMENSIONAL CALCULATIONS; ATOM TRANSPORT; CHARGED-PARTICLE TRANSPORT; HEAT FLUX; MATHEMATICAL MODELS

Citation Formats

Rognlien, T D, Crotinger, J A, Porter, G D, Smith, G R, Kellman, A G, and Taylor, P L. Simulation of the scrape-off layer plasma during a disruption. United States: N. p., 1996. Web.
Rognlien, T D, Crotinger, J A, Porter, G D, Smith, G R, Kellman, A G, & Taylor, P L. Simulation of the scrape-off layer plasma during a disruption. United States.
Rognlien, T D, Crotinger, J A, Porter, G D, Smith, G R, Kellman, A G, and Taylor, P L. Sat . "Simulation of the scrape-off layer plasma during a disruption". United States. https://www.osti.gov/servlets/purl/372662.
@article{osti_372662,
title = {Simulation of the scrape-off layer plasma during a disruption},
author = {Rognlien, T D and Crotinger, J A and Porter, G D and Smith, G R and Kellman, A G and Taylor, P L},
abstractNote = {The evolution of the scrape-off layer (SOL) during a disruption in the DIII-D tokamak is modeled using the 2-D UEDGE transport code. The focus is on the thermal quench phase when most of the energy content of the discharge is rapidly transported across the magnetic separatrix where it then flows to material surfaces or is radiated. Comparisons between the simulation and an experiment on the DIII-D tokamak are made with the heat flux to the divertor plate, and temperature and density profiles at the SOL midplane. The temporal response of the separate electron and ion heat-flux components to the divertor plate is calculated. The sensitivity of the solution to assumptions of electron heat-flux models and impurity radiation is investigated.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1996},
month = {3}
}

Conference:
Other availability
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