QLD1: quasi-linear diffusion of the thermonuclear-driven fast magnetosonic instability

A user's manual for the code packages QLD1 and ETAT is described. ETAT surveys the n/sub e/-T/sub i/ plane for candidate instability regions for the fusion product driven fast magnetosonic wave, omega approx. = L Ω/sub a/ = k/sub perpendicular to/v/sub A/. Threshold contours are plotted for a given toroidal magnetic field, radial position and wave frequency. OLD1 numerically solves the 1-D (v/sub parallel/-averaged) quasi-linear diffusion of the birth, 3.5 MeV alpha distribution function. It is shown elsewhere that the complete 2-D quasi-linear problem can be rigorously reduced to 1-D. Plasma level consequences of this instability are quantified in terms of an enhanced heating rate to plasma ions. Both ETAT and QLD1 have options to replace the isotropic alpha source with a perpendicularly injected neutral beam having a Gaussian energy spread of arbitrary width. When integrated with the 1 1/2-D tokamak transport code WHIST, system level response to the instability can be studied