Patent ID: 9659752
Date: 2017-05-23
CPC Classifications: H01J

Claim:
1. A method for presetting a tuner of a plasma processing apparatus that matches a power required for plasma emission in the plasma processing apparatus including a controller, the method comprising: generating, by the controller, plasma in a processing chamber of the plasma processing apparatus; calculating, by the controller, a relationship between a time lapse from power supply and an emission intensity of the plasma, and a relationship between the time lapse from the power supply and a setting position of the tuner in the plasma processing apparatus; differentiating, by the controller, the emission intensity by time and calculating, by the controller, a time when an increase rate of the emission intensity becomes maximum; and setting, by the controller, the setting position of the tuner at a time, which is obtained by subtracting a time required from the setting of the tuner until the setting is reflected on the emission intensity from the time when the increase rate of the emission intensity becomes maximum, as a preset position.