Ignition in a tokamak reactor with INTOR-like parameters

Technical Report · Fri Aug 01 00:00:00 EDT 1980

DOI:https://doi.org/10.2172/5171906· OSTI ID:5171906

Singer, C E; Seidl, F G.P.; Post, D E; Rutherford, P H

The requirements for ignition in a tokamak reactor with INTOR-like parameters were studied using a one-dimensional transport code. With empirical electron energy diffusivity Chi/sub e/, ignition was obtained with 60 to 75 MW of neutral beam injection at a volume average pressure ratio <..beta..> = 4 to 5% under a variety of conditions. Charging Chi/sub e/ gave ignition at the same <..beta..> if the plasma minor radius varied as a proportional to Chi/sub e/sup 1/2/. The maximum impurity concentration which allows ignition was found to be comparable to that for the much simpler case of a homogeneous plasma with radiative losses only. In long pulse simulations with efficient helium pumping, the maximum toroidal field ripple which allowed ignition was 2.0% (peak to peak) at the plasma edge. Ignition was maintained with over 99% recycling of helium ash using 5% less than maximum ripple.

• Research Organization: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
• DOE Contract Number: AM02-76CH03073
• OSTI ID: 5171906
• Report Number(s): PPPL-1693; TRN: 80-014493
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
TOKAMAK TYPE REACTORS
THERMONUCLEAR IGNITION
ALPHA PARTICLES
INTOR TOKAMAK
MAGNETIC FIELD RIPPLES
NEUTRAL ATOM BEAM INJECTION
ONE-DIMENSIONAL CALCULATIONS
RECYCLING
TRANSPORT THEORY
BEAM INJECTION
CHARGED PARTICLES
MAGNETIC FIELD CONFIGURATIONS
THERMONUCLEAR REACTORS
700200* - Fusion Energy- Fusion Power Plant Technology