Patent ID: 7828928

Claim:
A vacuum processing apparatus comprising: an outer chamber which constitutes a vacuum container in which an inside thereof is decompressed, the vacuum container including an upper member which opens and closes an opening of the vacuum container; an inner chamber which is cylindrically-shaped and in which a plasma used for processing a wafer is generated, the inner chamber being disposed inside of the outer chamber so as to be detachable from the outer chamber through the opening of the vacuum container; a wafer holder on which the wafer is located is disposed inside of the inner chamber; at least one support beam disposed in an outer periphery of the wafer holder and connected to the wafer holder and to a ring-shaped member of the cylindrically-shaped inner chamber so as to form a single body; and an exhausting opening disposed below the wafer holder which is connected to an exhausting device which exhausts the inside of the inner chamber to a vacuum pressure; wherein the inner chamber is sealed in an air-tight manner with respect to a space between the inner chamber and the outer chamber while the space is maintained at a vacuum pressure.