partOf Specification for ASPNC reactor: industrial-scale; cylindrical with an inner diameter of 1 m and a volume of approximately 1 m^3; walls consist of a massive steel wall with internal water-cooling and vacuum sealing, and a heat shield of four layers of steel sheets adding about 5 cm to the wall thickness; active screen is a double mesh of construction steel (1.0038) with a diameter of 0.8 m and a height of 0.75 m