Speaker
Description
Transition edge sensors (TES) play a key role in current projects of future X-rays space
telescopes as are foreseen as detectors for the focal plane instrument. In order to full exploit
their sensitivity in the space environment, they need an active cryogenic anticoincidence
detector (CryoAC) to reject the background due to cosmic charged particles. As signal given by
the interaction of high-energy protons (> 150 MeV) and other charged particle with the X-ray
calorimeter cannot be distinguished from the one given by the scientific photons, thus degrading
the instrument performance. It will be reported the CryoAC design and, in detail, the last
prototype based on TES calorimeter where a 1-cm$^2$ silicon chip is used as both substrate and
absorber. The readout is made of 96 iridium/gold TESs uniformly distributed on its surface and
connected in parallel. Focusing on the production of the detector and its potentialities.
