The chamber is 30 cm in diameter and 32 cm high. Ice samples of various sizes can be placed in the sample holder inside this chamber. The sample holder is surrounded by a shroud. Liquid nitrogen (boiling point of -196.15°C) is used as coolant in the shroud and the cooling system guarantees a continuous cooling of the facility. A radiation shield, consisting of a stainless steel plate of 0.3 mm thickness, is placed between the chamber structure and the shroud. A quartz window on top of the sample enables to monitor the sample surface evolution with the hyperspectral imaging system positioned outside the chamber. This system consists of two cameras on top of the SCITEAS chamber: a CCD visible camera, a near-infrared MCT camera, and a monochromator.
The chamber is evacuated by a turbomolecular pump assisted by a second membrane pump, allowing to reach 10-7 mbar in the chamber. The pressure in the chamber is controlled via a valve and monitored via a full pressure range gauge.