Investigation of processes of heat propagation in multilayer sensor of thermoelectric single-photon detector

The results of computer simulation of the processes of heat propagation inside the multilayer sensor of thermoelectric detector after absorbing the single photons with the energies 1 keV and 100 eV are presented. The variants are considered for different geometries of the sensor which consists of the tungsten absorber and of the thermoelectric layer of the cerium hexaboride. The differences of temporal dependence of the signal arising in the thermoelectric layer when the photon is absorbed in the various areas of absorber are studied in details. The energy resolution and the count rate of the sensor are estimated. It is shown that the multilayer sensors have a number of advantages as compared to the single-layered, and their use is promising in the various fields of science and technology.