I've complicated the model. I made a copy of the first pair of cones. I changed the proportions - the base of the large cone is now 150 cm. Now each ray is the sum of four cones of different sizes. And I added capacity in banks, 4 spheres of 100% each. Yes, the beam turned out to be more loose, not as flat as in the first case. But the rendering time has greatly increased. Three times more((. This simple picture was loaded for 40 hours. Horror. I also noticed that it is necessary to slightly shift the texture along the Y axis on the second copy of the model so that dense patches of texture do not overlap on all layers of cones in one place. Otherwise, the beam turns out to be clearly striped, as in this picture.
