Evolution of toroidal Alfven eigenmode instability in TFTR
- Princeton Univ., NJ (United States). Plasma Physics Lab.; and others
The nonlinear behavior of the Toroidal Alfven Eigenmode (TAE) driven unstable by energetic ions in TFTR is studied. The evolution of instabilities can take on several scenarios: a single mode or several modes can be driven unstable at the same time, the spectrum can be steady or pulsating and there can be negligible or anomalous loss associated with the instability. This paper presents a comparison between experimental results and recently developed nonlinear theory. The authors find many features observed in experiment are compatible with the consequences of the nonlinear theory. Examples include the structure of the saturated pulse that emerges from the onset of instability of a single mode and the decrease but persistence of TAE signals when the applied rf power is reduced or shut off.
- Research Organization:
- Univ. of Texas, Austin, TX (United States). Institute for Fusion Studies; Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG03-96ER54346; AC02-76CH03073
- OSTI ID:
- 373896
- Report Number(s):
- DOE/ER/54346-753; IFSR-753; ON: DE96014771; TRN: 96:024923
- Resource Relation:
- Other Information: PBD: Jul 1996
- Country of Publication:
- United States
- Language:
- English
Similar Records
Observations of fast ion losses due to toroidal Alfven eigenmodes in TFTR
Alpha particle destabilization of the toroidicity-induced Alfven eigenmodes