Ablation measurements using plasma disruption simulator

Author

Crawford, J.F. ; Gahl, J.M.

Author_Institution

Dept. of Electr. & Comput. Eng., New Mexico Univ., Albuquerque, NM, USA

fYear

1991

fDate

30 Sep-3 Oct 1991

Firstpage

361

Abstract

A plasma disruption simulator (PLADIS) has been built and is operating at the University of New Mexico. PLADIS is a coaxial plasma gun system, operating in the deflagration mode. The system was designed to give a variable pulse length of 80-500 μs and is typically operated with a pulse length of approximately 100 μs. The gun is intended to deliver to a target an energy deposition density of 1 kJ/cm ² over a surface area of approximately 5 cm². PLADIS should simulate the heat flux of a tokamak plasma disruption on plasma-facing components. Data describing the ablation of graphite targets versus energy deposition are given. Ablation of targets is determined by simple weight measurement. Fast spot pyrometry is currently being implemented and should greatly improve the ability to accurately determine energy deposition

Keywords

fusion reactor ignition; fusion reactor theory and design; plasma guns; plasma heating; plasma instability; plasma simulation; PLADIS; University of New Mexico; ablation; coaxial plasma gun system; deflagration mode; energy deposition; graphite targets; heat flux; plasma disruption simulator; plasma-facing components; pyrometry; variable pulse length; weight measurement; Coaxial components; Copper; Energy measurement; Feeds; Plasma density; Plasma measurements; Plasma properties; Plasma simulation; Plasma temperature; Pollution measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Fusion Engineering, 1991. Proceedings., 14th IEEE/NPSS Symposium on

Conference_Location

San Diego, CA

Print_ISBN

0-7803-0132-3

Type

conf

DOI

10.1109/FUSION.1991.218804

Filename

218804