D'ANDREA, MATTEOMATTEOD'ANDREAMACCULI, CLAUDIOCLAUDIOMACCULITorrioli, G.G.TorrioliARGAN, ANDREAANDREAARGANBRIENZA , DANIELEDANIELEBRIENZALOTTI, SimoneSimoneLOTTIMINERVINI, GABRIELEGABRIELEMINERVINIPIRO, LUIGILUIGIPIROBiasotti, M.M.BiasottiFerrari Barusso, L.L.Ferrari BarussoGatti, F.F.GattiRigano, M.M.RiganoVolpe, A.A.VolpeBattistelli, E. S.E. S.Battistelli2024-03-182024-03-1820200022-2291http://hdl.handle.net/20.500.12386/34976The Cryogenic AntiCoincidence detector (CryoAC) of ATHENA X-IFU is designed to reduce the particle background of the instrument and to enable the mission science goals. It is a 4-pixel silicon microcalorimeter sensed by an Ir/Au TES network. We have developed the CryoAC demonstration model, a prototype aimed to probe the critical technologies of the detector, i.e., the suspended absorber with an active area of 1 cm<SUP>2</SUP>; the low energy threshold of 20 keV; and the operation connected to a 50 mK thermal bath with a power dissipation less than 40 nW. Here, we report the test performed on the first CryoAC DM sample (namely, the AC-S10 prototype), showing that it is fully compliant with its requirements.STAMPAenArticle10.1007/s10909-019-02300-9https://link.springer.com/article/10.1007/s10909-019-02300-92020JLTP..199...65DFIS/05 - ASTRONOMIA E ASTROFISICA