Method for manufacturing industrial magnetron

A method for manufacturing an industrial magnetron, the industrial magnetron comprising:

• an anode cylindrical body;
• an annular permanent magnet that is disposed above and below the anode cylindrical body and that supplies a magnetic field;
• and
• a cooling block that is disposed in a columnar shape on an outer circumference of the anode cylindrical body, wherein
• the cooling block has an anode cylindrical body contact portion that is in contact with the anode cylindrical body, and a permanent magnet contact portion that is in contact with the permanent magnet, and
• at the stage of manufacturing a sample, which is the stage prior to main production of the industrial magnetron in which both the anode cylindrical body and the permanent magnet are cooled by one cooling block, the industrial magnetron is subjected to a test operation to specify a heat generation position of the anode cylindrical body and measure an amount of heat generation thereof, and an arrangement position of a refrigerant flow path and a number of circuits of the refrigerant flow path are determined according to the heat generation position and the amount of heat generation.