Abstract: In a vertical-type heat processing apparatus, it is intended to stabilize the temperature of an inner wall of the reaction vessel upon loading as well as to reduce particle contamination, for example, by suppressing peeling of films attached to the inner wall. An inner wall temperature sensor is attached, in advance, to the inner wall of the reaction vessel, so as to obtain each time series data of detection values of the inner wall temperature sensor and a command value of power to be supplied to heating means. The inner wall temperature is predicted from the command value of the power obtained just before, based on the data, during an initial time of loading, so as to use the predicted value of the inner wall temperature as an object to be controlled.

Abstract: In a vertical-type heat processing apparatus, it is intended to stabilize the temperature of an inner wall of the reaction vessel upon loading as well as to reduce particle contamination, for example, by suppressing peeling of films attached to the inner wall. An inner wall temperature sensor is attached, in advance, to the inner wall of the reaction vessel, so as to obtain each time series data of detection values of the inner wall temperature sensor and a command value of power to be supplied to heating means. The inner wall temperature is predicted from the command value of the power obtained just before, based on the data, during an initial time of loading, so as to use the predicted value of the inner wall temperature as an object to be controlled.