A. V. Borodin, I. S. Petkov, D. N. Frantsev*
ZAO "ROSTOKS-N", Chernogolovka
*Institute of Solid-State Physics RAS, Chernogolovka
The new generation crystal
growth systems should work in the automatic mode. To obtain high-quality
crystals, accurate maintenance of the specified boule profile is required.
In the systems using weight control, the programmed force is compared to
the force acting upon the weight sensor. In this paper an algorithm for
calculation of the programmed force is offered. It is based on the numerical
solution of the Bardsley equation. This algorithm allows crystal profile
setting both analytically and numerically.