Power Supply for NSTX Resistive Wall Mode Coils

Author

Ramakrishnan, S. ; Neumeyer, C. ; Marsala, R. ; Hatcher, R. ; Baker, E.

Author_Institution

Princeton Plasma Phys. Lab., NJ

fYear

2005

fDate

Sept. 2005

Firstpage

1

Lastpage

4

Abstract

The National Spherical Torus Experiment (NSTX) has been designed and installed in the existing facilities at Princeton Plasma Physics Laboratory (PPPL). Most of the hardware, plant facilities, auxiliary sub-systems, and power systems originally used for the Tokamak Fusion Test Reactor (TFTR) have been used with suitable modifications to reflect NSTX needs. Until 2004, the NSTX power system was feeding twelve (12) circuits in the machine. In 2004, resistive wall mode (RWM) coils were installed in the machine to suppress resistive wall modes and to correct error fields. There are six of these coils installed around the machine on the mid-plane. Since these coils need fast and accurate controls, a switching power amplifier (SPA) has been procured, installed and commissioned along with other circuit components. One of the existing thyristor rectifiers is used as the DC source to the SPA. The controls for the RWM have been integrated into the overall computer control of the DC power systems for NSTX. This paper describes the RWM power supply for NSTX

Keywords

Tokamak devices; fusion reactor design; fusion reactor materials; plasma toroidal confinement; power amplifiers; power supplies to apparatus; rectifying circuits; thyristor convertors; DC power systems; DC source; NSTX power system; National Spherical Torus Experiment; Princeton Plasma Physics Laboratory; RWM power supply; TFTR; Tokamak Fusion Test Reactor; auxiliary subsystems; circuit components; computer control; plant facilities; resistive wall mode coils; switching power amplifier; thyristor rectifiers; Circuits; Coils; Control systems; Fusion reactor design; Hardware; Laboratories; Physics; Plasmas; Power supplies; Power systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Fusion Engineering 2005, Twenty-First IEEE/NPS Symposium on

Conference_Location

Knoxville, TN

Print_ISBN

0-4244-0150-X

Electronic_ISBN

0-4244-0150-X

Type

conf

DOI

10.1109/FUSION.2005.252986

Filename

4019020