SIGNAL MODELING FOR TEO2 BOLOMETRIC DETECTORS

An energetic particle impinging a large mass bolometric detector gener ates signals of different shape depending on where the energy is depos ited: in the absorber or in thethermal sensor. By exploiting this effe ct and the thermal characteristic of the sensor, all the parameters ne eded for simulating the dynamic behaviour of the detector for small an d large signals were extracted. The model was used for simulating a se ries of 3 TeO2 bolometers with mass of 70g and 330g. For an accurate a nalysis an electric field effect dependance of the electron-phonon the rmal conductance and electrons heat capacity in the thermistors used w as taken into account. Also an interesting measured and simulated effe ct was considered regarding the quasi complete thermalized energy give n by an alpha-particle.