We are running a project to develop new particle detectors based on the superconducting microwave microresonator technique. These low temperature detectors are very sensitive devices compatible with large-scale multiplexed frequency domain read-out. They are sensitive to the energy absorbed through a characteristic property of superconductors subjected to an electromagnetic field: the kinetic inductance, which is related to the kinetic energy stored by the Cooper pairs in their motion within the superconductor. The faint binding energy of the Cooper pairs (order of the meVs) make the theoretical energy resolution extremely good.

Low temperature TES microcalorimeters for high energy resolution spectroscopy of low energy electrons