Thermal Response Analysis

Abstract

It has been shown that the behavior of the data can be explained assuming that the thermal response $\Updelta T$ does neither depend on the energy released in the bolometer nor on the variation of the bolometer temperature. The non-linearities of the voltage signal $\Updelta V$ seem to be generated by the thermistor and by the biasing circuit. Here we propose an algorithm to extract $\Updelta T$ from the measured $\Updelta V$, and we will make the data analysis using $\Updelta T$. Being the thermal response more regular than the voltage signal, an improvement is expected in the data analysis. This algorithm has the advantage that it does not take into account the thermal model at all, a topic in which our knowledge is very small, limiting the analysis just to a description of $\Updelta T$ without trying to explain its origin. We will compare the data analysis based on $\Updelta T$ with the standard analysis used so far with bolometers that is instead based on $\Updelta V$.