FEEDTHROUGHS Feedthroughs with Low Thermal Parasitic Loads for Cryogenic Applications
2020 - 2021 | ESA
Development of a feedthrough for space cryogenic aplications, with very low thermal parasitic loads.
In order to cool cryogenic detector applications, cryocoolers with coldfingers inside the cryostat have to be employed. In applications sensitive to micro-vibrations, the respective load paths via structural and thermal interfaces can become hard to predict and design against. Hence, remote cooling applications can become interesting, which require a feedthrough to enable cooling inside the cryostat, via fluid loop or passive cooling.
The main purpose of this activity is to design and build a feedthrough, for both a cryogenic fluid line and a thermal strap, feeding inside a vacuum and EMC-tight cryostat with a room temperature interface, with minimised thermal parasitic loads into the process fluid. So as to achieve this objective, the project comprises the detailed design of a breadboard, the manufacture of such breadboard and complete test campaign for it.
The project is led by AVS and supported by INTA, the National Institute of Aerospace Technology (Public Research Organisation that depends on the Spanish Ministry of Defence).
Photo(s) and/or 3D’s: Picture shows conceptual design of a metallic feedthrough.