Ripple induced trapped particle loss in tokamaks
The threshold for stochastic transport of high energy trapped particles in a tokamak due to toroidal field ripple is calculated by explicit construction of primary resonances, and a numerical examination of the route to chaos. Critical field ripple amplitude is determined for loss. The expression is given in magnetic coordinates and makes no assumptions regarding shape or up-down symmetry. An algorithm is developed including the effects of prompt axisymmetric orbit loss, ripple trapping, convective banana flow, and stochastic ripple loss, which gives accurate ripple loss predictions for representative Tokamak Fusion Test Reactor and International Thermonuclear Experimental Reactor equilibria. The algorithm is extended to include the effects of collisions and drag, allowing rapid estimation of alpha particle loss in tokamaks.
- Research Organization:
- Princeton Univ., NJ (United States). Plasma Physics Lab.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC02-76CH03073
- OSTI ID:
- 238592
- Report Number(s):
- PPPL--3177; ON: DE96010507
- Country of Publication:
- United States
- Language:
- English
Similar Records
Ripple-induced energetic particle loss in tokamaks
Ripple induced trapped particle loss in tokamaks
Simulations of alpha particle ripple loss from the International Thermonuclear Experimental Reactor
Journal Article
·
Thu Aug 01 00:00:00 EDT 1996
· Physics of Plasmas
·
OSTI ID:286355
Ripple induced trapped particle loss in tokamaks
Conference
·
Mon Dec 30 23:00:00 EST 1996
·
OSTI ID:489412
Simulations of alpha particle ripple loss from the International Thermonuclear Experimental Reactor
Technical Report
·
Wed May 01 00:00:00 EDT 1996
·
OSTI ID:238590