Patent ID: 6871111

Claim:
A performance evaluation method for a plasma processing apparatus comprising: where the plasma processing apparatus is disassembled before transfer, is transported to a customer, and is reassembled at a customer site, the plasma processing apparatus including a plasma processing chamber including a plasma excitation electrode for exciting a plasma; a radiofrequency feeder, the plasma excitation electrode being connected to the output end of the radiofrequency feeder; a radiofrequency generator for supplying a radiofrequency voltage to the plasma excitation electrode; and a matching circuit having an input terminal and an output terminal, the input terminal being connected to the radiofrequency generator and the output terminal being connected to the input end of the radiofrequency feeder so as to achieve impedance matching between the plasma processing chamber and the radiofrequency generator, determining that the plasma processing apparatus maintains a required level of performance when a loss capacitance C X1 of the plasma processing chamber after the delivery is less than 26 times a plasma electrode capacitance C e1 and that the plasma processing apparatus does not maintain the required level of performance when the loss capacitance C X1 is not less than 26 times the plasma electrode loss capacitance C e1 , wherein the loss capacitance C X1 is measured between the plasma excitation electrode and pound potential positions which are DC-grounded and the plasma electrode capacitance C e1 is measured between the plasma excitation electrode and a counter electrode which generate a plasma in cooperation with each other.