Abstract-The concept of an active integrated dosimetric sensor for the radiation monitoring of the Compact Muon Solenoid experiment at the CERN (European Center for Nuclear Research) LargeHadron Collider is presented. The sensor, based on RadFET, OSL, p-i-n diode, and pad detector dosimeters, will measure both ionizing and nonionizing energy losses in the harsh radiation environment produced by hadron interactions.

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The photoluminescence (PL), thermostimulated luminescence (TSL) and optical stimulated luminescence (OSL) properties of a cerium and samarium codoped strontium sulfide (SrS : Ce,Sm) used in OSL imaging devices are studied after UV or X-ray irradiation. A correlation is made between TSL and OSL results, showing a strong thermal and optical fading at room temperature, implying a significant instability of the OSL signal.