Spectrum

The data collected in an experiment studying solar neutrinos can be visualised in a spectrum: a plot in which is reported the number of signals, received by the detector, as function of their energy. In the beginning, the spectrum shows usually all signals that occurred in the detector. In order to show only the spectrum of the signals one is looking for, one has to “clean” the original spectrum from signals due to background interactions (cosmic rays, environmental radiations and radioactive elements present in the material, which makes up the detector).