Axisymmetric stability of vertically asymmetric tokamaks at large beta poloidal
The stability of high-..beta.. vertically asymmetric tokamak equilibria to rigid displacements is investigated analytically. It is found that vertical stability at large beta poloidal is mainly determined by a coupling between the shape of the plasma surface and the Shafranov shift of the magnetic axis. To the lowest order, symmetric components of the plasma surface shape are found to be the critical destabilizing elements. Asymmetric components have little effect. The inclusion of higher order terms in the high ..beta.. tokamak expansion leads to further destabilization. Qualitative agreement between these analytic results and numerical stability calculations using the PEST code is demonstrated.
- Research Organization:
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States); Grumman Aerospace Corp., Princeton, NJ (USA)
- DOE Contract Number:
- AC02-76CH03073
- OSTI ID:
- 6218458
- Report Number(s):
- PPPL-1831; ON: DE81030382; TRN: 81-017054
- Country of Publication:
- United States
- Language:
- English
Similar Records
Identification of, and transition to, the second region of ideal MHD stability in tokamaks
High-beta analytic equilibria in circular, elliptical, and D-shaped large aspect ratio axisymmetric configurations with poloidal and toroidal flows
An analytic determination of beta poloidal and internal inductance in an elongated tokamak from magnetic probe measurements
Technical Report
·
Mon Jan 01 00:00:00 EST 1990
·
OSTI ID:6218458
High-beta analytic equilibria in circular, elliptical, and D-shaped large aspect ratio axisymmetric configurations with poloidal and toroidal flows
Journal Article
·
Wed Mar 01 00:00:00 EST 2017
· Physics of Plasmas
·
OSTI ID:6218458
An analytic determination of beta poloidal and internal inductance in an elongated tokamak from magnetic probe measurements
Technical Report
·
Sat Feb 01 00:00:00 EST 1992
·
OSTI ID:6218458