Comparison between computed and measured response of silicon strip detectors exposed to carbon, calcium and ruthenium ion beams

The response of silicon strip detectors exposed to energetic heavy ions in the energy interval from 0.3 up to 1.4 GeV/u has been measured at the SIS accelerator at GSI. The energy deposit spectra are characterized by their mean values and widths. The carbon data, at various energies, agree within the accuracy of the measurements with the computed response of the detector. The measured widths of the energy deposit spectra for ruthenium are narrower than those calculated by the appropriate Vavilov distributions. Energetic δ-rays overflowing from the silicon detector is considered as a possible explanation for the disagreement between computed and measured widths.