Ultrafast TSPD on the basis of CeB6 sensor

The results of computer simulation of heat distribution on the sensor of Thermoelectric Single Photon Detector after photon absorption are presented in this work. The kinetic processes emerging after the absorption of 100 eV (hard UV) and 1 KeV (X-ray) energy photons in different areas of the absorber for different sensor and absorber geometries are investigated. The calculations were performed for the tungsten absorber and the cerium hexaboride sensor. It is shown, that waveform of time dependence of response doesn't strongly depend from the depth of photon thermalization area in absorber and the height on which the temperature gradient on the edges of thermoelectric sensor is measured.