Stabilization and onset of sawteeth in TFTR
- Fusion Physics and Technology, Torrance, CA (United States)
- Princeton Plasma Physics Lab., NJ (United States)
Measurements from the Tokamak Fusion Test Reactor (TFTR) of the q-profile using motional Stark effect (MSE) polarimetry and the pressure profiles have allowed detailed comparison of both supershots and L-mode discharges to theoretical models describing the stability of sawteeth. In TFTR supershots sawteeth are usually absent, whereas in L-mode discharges they are generally present, and in both cases q(O) is less than one. It has been found that the {omega}*-stabilization criterion of the two-fluid collisionless m=l reconnection mode agrees very well with the presence or absence of sawteeth in TFTR and no beta limits to the sawtooth stabilization have been observed.
- Research Organization:
- Princeton Univ., NJ (United States). Plasma Physics Lab.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC02-76CH03073
- OSTI ID:
- 10141655
- Report Number(s):
- PPPL--2968; ON: DE94009827
- Country of Publication:
- United States
- Language:
- English
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