Ballooning instabilities in the ELMO Bumpy Torus (EBT)

Journal Article · Fri Jun 01 04:00:00 EDT 1984 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.864770· OSTI ID:6732042

Nguyen, K; Kammash, T

The macroscopic stability of a model ELMO Bumpy Torus (EBT) plasma taking into account variations of the field curvature along the magnetic field is numerically investigated in the long-thin limit. When the compression term has a pole in the ring region the background ballooning mode becomes stable for any value of the hot electron beta because of strong line bending which results from the interaction of the hot electron component with the plasma. Axially longer rings give better stability, and the upper bound on the core beta can be improved by increasing the mirror ratio although at the expense of reducing stability of the background ballooning mode.

• Research Organization: University of Michigan, Ann Arbor, Michigan 48109
• OSTI ID: 6732042
• Journal Information: Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 27:6; ISSN PFLDA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700107* -- Fusion Energy-- Plasma Research-- Instabilities
BALLOONING INSTABILITY
BETA RATIO
BUMPY TORI
COLLISIONS
ELECTRON COLLISIONS
ELECTRON RINGS
ELMO BUMPY TORUS
ELMO DEVICES
HOT PLASMA
INSTABILITY
MAGNETIC FIELDS
MAGNETIC MIRRORS
NUMERICAL SOLUTION
OPEN PLASMA DEVICES
PLASMA
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
STABILITY
THERMONUCLEAR DEVICES