Patent ID: 8367975

Claim:
A temperature adjustment method in a thermal processing system, the thermal processing system including: a heating unit for heating inside a processing chamber for processing a substrate, a heating control section for controlling the heating unit, and first and second temperature detecting units for detecting a temperature inside the processing chamber, the first temperature detecting unit being arranged at a position closer to the substrate than a position of the second temperature detecting unit, and the said second temperature detecting unit being arranged at a position closer to the heating unit than a position of the first temperature detecting unit, the temperature adjustment method comprising: a step of determining a first heat quantity in a period from a start of a temperature increase detected by the second temperature detecting unit to a time at which the temperature inside the processing chamber reaches a maximum temperature, when a control of the thermal processing system is performed based on a first output control pattern that is obtained by subjecting a detection temperature provided by the first temperature detecting unit to an integral operation, a differential operation, and a proportional operation under a condition of a first set of temperature-setting conditions; a step of determining a second output control pattern by using a second heat quantity that is obtained by subtracting an output provided by the proportional operation from the first heat quantity; and a step of correcting a portion of the second output control pattern corresponding to a condition which is different from the first set of temperature-setting conditions, of a second set of temperature-setting conditions in a subsequent temperature control cycle, when at least one condition of the second set of temperature-setting conditions is different from the first set of temperature-setting conditions.