SIGNAL MODELING FOR TEO2 BOLOMETRIC DETECTORS

An energetic particle impinging a large mass bolometric detector generates signals of different shape depending on where the energy is deposited: in the absorber or in thethermal sensor. By exploiting this effect and the thermal characteristic of the sensor, all the parameters needed for simulating the dynamic behaviour of the detector for small and large signals were extracted. The model was used for simulating a series of 3 TeO2 bolometers with mass of 70g and 330g. For an accurate analysis an electric field effect dependance of the electron-phonon thermal conductance and electrons heat capacity in the thermistors used was taken into account. Also an interesting measured and simulated effect was considered regarding the quasi complete thermalized energy given by an alpha-particle.