Development of a magnetized coaxial plasma gun for simulation experiment of type-I ELM heat loads

Author

Sakuma, I. ; Shoda, K. ; Iwamoto, D. ; Kikuchi, Y. ; Fukumoto, N. ; Nagata, M.

Author_Institution

Grad. Sch. of Eng., Univ. of Hyogo, Himeji, Japan

fYear

2011

fDate

26-30 June 2011

Firstpage

1

Lastpage

3

Abstract

The magnetized coaxial plasma gun (MCPG) device at University of Hyogo for simulation experiments of type-I ELM heat loads has been upgraded to improve the performance. The characteristics of the upgraded MCPG device have been investigated and compared with the previous one. The capacitor bank energy for the power supply of the MCPG was increased from 24.5 kJ to 144 kJ. In the preliminary experiments, the plasmoid with duration of ~0.6 ms, the incident ion energy of ~40 eV, and the surface absorbed energy density of ~2 MJ/m² was successfully produced by the present MCPG device at the gun voltage of 6 kV.

Keywords

capacitors; plasma boundary layers; plasma guns; plasma simulation; capacitor bank energy; magnetized coaxial plasma gun; power supply; type I ELM heat load; upgraded MCPG device; Ceramics; Heating; Insulators; Plasmas; ELM-like pulsed; magnetized coaxial plasma gun; plasma; plasma gun simulator; plasma-surface interaction;

fLanguage

English

Publisher

ieee

Conference_Titel

Fusion Engineering (SOFE), 2011 IEEE/NPSS 24th Symposium on

Conference_Location

Chicago, IL

ISSN

1078-8891

Print_ISBN

978-1-4577-0669-1

Electronic_ISBN

1078-8891

Type

conf

DOI

10.1109/SOFE.2011.6052304

Filename

6052304