Model for collisional fast ion diffusion into Tokamak Fusion Test Reactor loss cone

Technical Report · Mon Aug 01 00:00:00 EDT 1994

DOI:https://doi.org/10.2172/10176061· OSTI ID:10176061

Chang, C S ^[1]; Zweben, S J; Schivell, J; Budny, R; Scott, S ^[2]

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1. New York Univ., NY (United States). Courant Inst. of Mathematical Sciences
2. Princeton Univ., NJ (United States). Plasma Physics Lab.

An analytic model is developed to estimate the classical pitch angle scattering loss of energetic fusion product ions into prompt loss orbits in a tokamak geometry. The result is applied to alpha particles produced by deutrium-tritium fusion reactions in a plasma condition relevant to Tokamak Fusion Test Reactor (TFTR). A poloidal angular distribution of collisional fast ion loss at the first wall is obtained and the numerical result from the TRANSP code is discussed. The present model includes the effect that the prompt loss boundary moves away from the slowing-down path due to reduction in banana thickness, which enables us to understand, for the first time. the dependence of the collisional loss rate on Z{sub eff}.

• Research Organization: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 10176061
• Report Number(s): PPPL-3005; ON: DE94017334
• Resource Relation: Other Information: PBD: Aug 1994
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
74 ATOMIC AND MOLECULAR PHYSICS
ION-ION COLLISIONS
PARTICLE LOSSES
TFTR TOKAMAK
ALPHA PARTICLES
FIRST WALL
DIFFUSION
SCATTERING
CHARGED-PARTICLE TRANSPORT
MAGNETIC FIELD RIPPLES
700330
700380
664300
PLASMA KINETICS, TRANSPORT, AND IMPURITIES
ELEMENTARY AND CLASSICAL PROCESSES IN PLASMAS
COLLISION PHENOMENA