Passive vertical stability of ITER

Author

Leuer, J.A. ; Wesley, J.C.

Author_Institution

Gen. Atomics, San Diego, CA, USA

fYear

1989

fDate

2-6 Oct 1989

Firstpage

1274

Abstract

The passive stability property of the physics phase (PP) operation of the ITER (International Thermonuclear Experimental Reactor) device is analyzed. A linearized, rigid-body assumption is used to predict the stability parameter of the proposed passive stabilization structure. The problem is formulated into an eigenvalue problem and the solution predicts the critical stability margin and characteristic growth rate. The proposed stability structure and vacuum vessel (VV) provide 50% margin against Alfven time-scale vertical motion. The growth rate is less than 50 s^-1 for the nominal plasma. The plasma is shown to have low growth rates over a range of plasma internal inductance and poloidal beta

Keywords

eigenvalues and eigenfunctions; plasma instability; plasma toroidal confinement; Alfven time-scale vertical motion; ITER; International Thermonuclear Experimental Reactor; characteristic growth rate; critical stability margin; eigenvalue problem; growth rates; passive vertical stability; physics phase; plasma internal inductance; poloidal beta; rigid-body assumption; stability parameter; vacuum vessel; Coils; Ignition; Inductance; Integrated circuit modeling; Physics; Plasma devices; Plasma properties; Plasma sources; Plasma stability; Stability analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Fusion Engineering, 1989. Proceedings., IEEE Thirteenth Symposium on

Conference_Location

Knoxville, TN

Type

conf

DOI

10.1109/FUSION.1989.102445

Filename

102445