Implementation of TORAY et JET

The implementation of the TORAY ray-tracing code on the IBM at JET is described. Some special features of the present implementation of TORAY are: automatic input of experimental JET magnetic equilibrium data, weakly relativistic damping calculations including the effects of up to three drifting non-thermal electron populatons, and the possibility to include the effects of density modulations on the ray-trajectories. The input and output of the program, and the equilibrium and electron cyclotron damping routines that are new to the present version of the code, are described in detail. There are three different versions of the main program, namely TORAY which is the original version for electron cyclotron power deposition calculations, TORSCAT which is specifically written for application to the planned 140 GHz α-particle scattering diagnostic at JET, and TORTUR which calculates the wave phase instead of the wave damping. (author). 21 refs.; 27 figs