Modelling TF ripple loss of alpha particles in TFTR DT experiments

Technical Report · Sat Jul 01 00:00:00 EDT 1995

DOI:https://doi.org/10.2172/93636· OSTI ID:93636

Redi, M H; Budny, R V; Darrow, D S ^[1]

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1. and others

Modelling of TF ripple loss of alphas in DT experiments on TFTR now includes neoclassical calculations of first orbit loss, stochastic ripple diffusion, ripple trapping and collisional effects. A rapid way to simulate experiment has been developed which uses a simple stochastic domain model for TF ripple loss within the TRANSP analysis code, with the ripple diffusion threshold evaluated by comparison with more accurate but computationally expensive Hamiltonian coordinate guiding center code simulations. Typical TF collisional ripple loss predictions are 6-10% loss of alphas for TFTR D-T experiments at I{sub p} = 1.0-2.0 MA and R = 2.52 m.

• 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: 93636
• Report Number(s): PPPL-3113; ON: DE95016237; TRN: 95:018627
• Resource Relation: Other Information: PBD: Jul 1995
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION
TFTR TOKAMAK
CHARGED-PARTICLE TRANSPORT
ALPHA PARTICLES
PARTICLE LOSSES
GUIDING-CENTER APPROXIMATION
DEUTERIUM
TRITIUM
CHARGED-PARTICLE TRANSPORT THEORY
MAGNETIC FIELD RIPPLES