RF high voltage performance of RF transmission line components on the DIII-D Fast Wave Current Drive (FWCD) System

Author

Ferguson, S.W. ; Callis, R.W. ; Cary, W.P. ; Phelps, D.A. ; Ponce, D. ; Baity, F.W. ; Barber, G.

Author_Institution

Lawrence Livermore Nat. Lab., CA, USA

Volume

1

fYear

1995

fDate

30 Sep-5 Oct 1995

Firstpage

837

Abstract

The performance of the high voltage RF components of the DIII-D Fast Wave Current Drive System (FWCD) have been evaluated under various conditions of insulator configuration, insulator material, insulating gas and gas pressure. The insulator materials that have been investigated are alumina, steatite, pyrex, quartz, and teflon. The results of this evaluation are discussed in this paper. Additionally an RF high potter was developed to aid in the evaluation of RF high voltage components. The high potter consists of a 50 Ω, 1/4 wavelength cavity with a variable position short and a 50 ohm matched tap at one end of the cavity. With this configuration RF voltages were generated in excess of 100 kVp in the frequency range 30 to 60 MHz

Keywords

Tokamak devices; alumina; fusion reactor design; fusion reactor materials; fusion reactors; high-frequency transmission lines; high-voltage techniques; power transmission lines; quartz; 1/4 wavelength cavity; 30 to 60 MHz; 50 ohm; Al₂O₃; DIII-D; Fast Wave Current Drive; RF high potter; RF transmission line components; RF voltage; SiO₂; alumina; gas pressure; high voltage RF components; insulating gas; insulator configuration; insulator material; pyrex; quartz; steatite; teflon; Coaxial components; Fixtures; Gas insulation; Impedance; Laboratories; Power transmission lines; Radio frequency; Testing; Transmission lines; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Fusion Engineering, 1995. SOFE '95. Seeking a New Energy Era., 16th IEEE/NPSS Symposium

Conference_Location

Champaign, IL

Print_ISBN

0-7803-2969-4

Type

conf

DOI

10.1109/FUSION.1995.535963

Filename

535963