Tangential neutral-beam-driven instabilities in the Princeton beta experiment

Technical Report · Tue Jul 01 00:00:00 EDT 1986

DOI:https://doi.org/10.2172/5381676· OSTI ID:5381676

Heidbrink, W W; Bol, K; Buchenauer, D; Fonck, R; Gammel, G; Ida, K; Kaita, R; Kaye, S; Kugel, H; LeBlanc, B

During tangential neutral beam injection into the PBX tokamak, bursts of two types of instabilities are observed. One instability occurs in the frequency range 120-210 kHz and the other oscillates predominately near the frequency of bulk plasma rotation (20-30 kHz). Both instabilities correlate with drops in neutron emission and burst in charge-exchange neutral flux, indicating that beam ions are removed from the center of the plasma by the instabilities. The central losses are comparable to the losses induced by the fishbone instability during perpendicular injection.

• Research Organization: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 5381676
• Report Number(s): PPPL-2356; ON: DE86015514
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
PBX DEVICES
NEUTRAL ATOM BEAM INJECTION
DEUTERIUM
NEUTRONS
PLASMA INSTABILITY
ROTATING PLASMA
BARYONS
BEAM INJECTION
CLOSED PLASMA DEVICES
ELEMENTARY PARTICLES
FERMIONS
HADRONS
HYDROGEN ISOTOPES
INSTABILITY
ISOTOPES
LIGHT NUCLEI
NUCLEI
NUCLEONS
ODD-ODD NUCLEI
PLASMA
STABLE ISOTOPES
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
700107* - Fusion Energy- Plasma Research- Instabilities