TERENZI, LUCALUCATERENZI2024-03-072024-03-072014http://hdl.handle.net/20.500.12386/34914This report describes a preliminary design of the ALMA band 2+3 cryogenic architecture. The overall design is discussed from the identification of main interfaces and requirements. The main parameters estimates found through a preliminary analysis are shown. At this stage no relevant issues or criticalities are identified, however the main aspects affecting the thermal design in the next development phases are discussedELETTRONICOenResearch reportFIS/05 - ASTRONOMIA E ASTROFISICA