Patent ID: 11862438
Assignee: TOKYO ELECTRON LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A plasma processing apparatus comprising:
a mounting table including a heater configured to adjust a temperature of a mounting surface of the mounting table on which a consumable part is mounted; and
a process controller comprising:
a heater controller configured to control a supply power to the heater such that the heater reaches a setting temperature,
a measurement element configured to measure, while the supply power to the heater is controlled by the heater controller such that the temperature of the heater becomes constant, the supply power in a non-ignition state in which plasma is not ignited and the supply power in an ignition state after the plasma is ignited, and
a parameter calculator configured to calculate a thickness of the consumable part by using a heat input amount from plasma to the consumable part, a thermal resistance between the consumable part and the mounting surface, the thickness of the consumable part as parameters, and using the measured supply power in the non-ignition state and the measured supply power in the ignition state.