Device and method for determining the microstructure of a metal product, and metallurgical installation

A device for determining a microstructure of a metal product during a metallurgical production of the metal product, said device comprising:

• at least one x-ray source;
• at least one x-ray detector;
• at least one receptacle chamber, the x-ray source and/or the x-ray detector being disposed within said receptacle chamber, and said receptacle chamber having at least one window that is permeable to x-ray radiation;
• at least one cooling installation for actively cooling the receptacle chamber, wherein the cooling installation includes at least one supply installation for supplying at least one cooling medium to the receptacle chamber, wherein the receptacle chamber is connected so as to communicate with the supply installation, wherein the cooling installation further includes at least one regulating installation which has at least one sensor and at least one regulating electronics unit that is connected to the at least one sensor, wherein the regulating electronics unit is specified for actuating the at least one supply installation while taking into account signals of the at least one sensor, wherein the cooling installation has a housing and the regulating electronics unit is specified for actuating the at least one supply installation so that a temperature of an external face and/or an internal face of the housing lies above a dew point temperature of an atmosphere within and/or outside the housing, wherein the window is configured to at least partially reflect or absorb incident infrared radiation on the window from outside of the receptacle chamber.