Simulation of the scrape-off layer plasma during a disruption
- Lawrence Livermore National Lab., CA (United States)
- General Atomics, San Diego, CA (United States)
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.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); General Atomics, San Diego, CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48; AC03-89ER51114
- OSTI ID:
- 372662
- Report Number(s):
- UCRL-JC-122529; CONF-960569-10; ON: DE96050357; TRN: 96:024965
- 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
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