Studio della risposta di dosimetri a stato solido da utilizzare per la misura dei campi di radiazione nell'esperimento CMS a LHC

In the CMS experiment at the Large Hadron Collider (LHC) intense radiation fields are expected during p-p collisions. To guarantee the correct functioning of CMS for many years, an on-line dosimetric system will be required to check the energy deposed (via ionizing and non-ionizing energy losses) in the detectors during collisions. In the present work, two types of solid-state dosimeters, p+/n/n+ diodes for fluence measurement and RadFETs for absorbed dose measurement, were tested in neutrons, protons, and positive pions beams. The analysis include the study of the response of the devices compared with the field intensities expected in CMS, as well as the study of different instabilities that could affect the measure of the absorbed dose for RadFETs dosimeters only.