Initial performance and characteristics of the PBX-M 80 kV neutral probe beam

Author

Kugel, H.W. ; Gammel, G. ; Grotz, G. ; Kaita, R. ; Kozub, T. ; Levinton, F. ; Roberts, D.

Author_Institution

Plasma Phys. Lab., Princeton Univ., NJ, USA

fYear

1989

fDate

2-6 Oct 1989

Firstpage

697

Abstract

The Princeton Beta Experiment-Modified (PBX-M) neutral probe beam (NPB) was installed to perform q-profile measurements using two different methods. The NPB has met design specifications and has operated very reliably. Ion-source conditioning is accomplished at a rate suitable for the PBX-M experimental schedule. Operation of a conditioned ion source requires little operator attention. This performance has supported the diversity and complexity of the associated experiments. The mechanical, vacuum, and magnetic performance of the NPB are described, and ion-source conditioning, timing, perveance, and modulation are discussed. Species measurements and ratios are given, and recent applications are described

Keywords

fusion reactor instrumentation; ion sources; particle beam diagnostics; PBX-M 80 kV neutral probe beam; Princeton Beta Experiment-Modified; conditioned ion source; magnetic performance; mechanical performance; modulation; perveance; q-profile measurements; species measurements; timing; vacuum performance; Bellows; Ducts; Ion sources; Particle beam measurements; Particle beams; Plasma measurements; Probes; Tokamaks; Toroidal magnetic fields; Valves;

fLanguage

English

Publisher

ieee

Conference_Titel

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

Conference_Location

Knoxville, TN

Type

conf

DOI

10.1109/FUSION.1989.102500

Filename

102500