The accuracy analysis of the contact method of the cristals area grown by the Chokhralski method
The basic requirements ensuring the measurement accuracy of a crystal area grown on a cylindrical part from a liquid melt by the Chokhralski method are considered on the grounds of the contact measurement method. In the control system according to the coordinates of moving the crystal and crucible, the application of photo-reading optical lines with a sampling resolution of 0.1 rm in the control system according to the coordinates of moving the crystal and crucible is justified. A work algorithm for the growing crystals installation from a control the sensor closure conditions of the melt level in the crucible, which ensures the accuracy of measuring the current crystal area below 1%, is proposed.