Voltage holding prediction in multi-electrode multi-voltage systems insulated in vacuum

Author

Pilan, N. ; Veltri, P. ; De Lorenzi, A.

Author_Institution

Consorzio RFX - Associazione EURATOM-ENEA per la Fusione, Padova, Italy

fYear

2010

fDate

Aug. 30 2010-Sept. 3 2010

Firstpage

15

Lastpage

18

Abstract

The voltage holding in the 1 MV ITER Neutral Beam Accelerator is recognized to be one of the most critical issues for long lasting beam operation, due to the complex electrostatic structure formed by differently shaped electrodes polarized at different potentials. At present, no model is available to predict the breakdown probability of electrostatic system with a comparable complexity degree. This paper is aimed at proposing an innovative modelling for the voltage breakdown prediction of such complex systems, based on the implementation of the micro particle (clump) induced breakdown Cranberg-Slivkov theory into a statistical approach.

Keywords

electric breakdown; electrodes; fusion reactors; plasma devices; statistical analysis; vacuum insulation; ITER neutral beam accelerator; breakdown Cranberg-Slivkov theory; breakdown probability; complex electrostatic structure; electrostatic system; international thermonuclear experimental reactor; multielectrode multivoltage systems; statistical approach; vacuum insulation; voltage 1 MV; voltage breakdown prediction; voltage holding prediction; Electric breakdown; Electric fields; Electrodes; Electrostatics; Geometry; Particle beams; Trajectory;

fLanguage

English

Publisher

ieee

Conference_Titel

Discharges and Electrical Insulation in Vacuum (ISDEIV), 2010 24th International Symposium on

Conference_Location

Braunschweig

ISSN

1093-2941

Print_ISBN

978-1-4244-8367-9

Electronic_ISBN

1093-2941

Type

conf

DOI

10.1109/DEIV.2010.5625752

Filename

5625752