Patent ID: 8818545

Claim:
A semiconductor fabrication apparatus comprising: a semiconductor wafer mounting table having a cavity therein; a nozzle which jets a liquefied temperature adjustment medium having a jet temperature equal to or less than a target temperature to an inner wall of the cavity in order to adjust a temperature of the semiconductor wafer mounting table to the target temperature; a temperature detecting unit for detecting the temperature of the semiconductor wafer mounting table; a pressure detecting unit for detecting an internal pressure of the cavity; a vacuum pump which discharges gas from the cavity; and a controller configured to determine a target internal pressure of the cavity and to control the vacuum pump such that, if the temperature detected by the temperature detecting unit exceeds the target temperature, the internal pressure detected by the pressure detecting unit is controlled to become the target internal pressure, and wherein the controller is configured to determine the target internal pressure such that the target internal pressure is equal to or greater than a saturated vapor pressure of the temperature adjustment medium at the jet temperature and also such that the target internal pressure is equal to or less than a saturated vapor pressure of the temperature adjustment medium at the target temperature.