Marco Patrucco
Cryogenic Cooling for Spacecraft Payload.
Rel. Manuela Battipede, Savino De Palo. Politecnico di Torino, Master of science program in Aerospace Engineering, 2025
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Abstract
This thesis investigates the implementation of a cryocooler for the THESEUS (Transient High Energy Sky and Early Universe Surveyor) mission, one of the three candidate missions for the European Space Agency's (ESA) seventh medium-class scientific mission (M7), currently in its preliminary study phase (Phase A) since September 2023. The primary objective of THESEUS is to study gamma-ray bursts to enhance our understanding of the early evolution of the universe. Additionally, the mission includes monitoring X-ray transients and conducting infrared observations in response to external signals detected by dedicated sensors. To meet the stringent thermal requirements of the infrared observation sensor, the implementation of a cryogenic cooling system, either active or passive, is essential.
Maintaining low operating temperatures is crucial for detecting faint signals from deep space, shielding it from potential disturbances, such as the infrared radiation emitted by the Sun and the Earth, while minimizing interference to have a clear signal while limiting background noises
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