Development and Characterisation of Radiation Monitoring Sensors for the High Energy Physics Experiments of the CERN LHC Accelerator

The Radiation monitoring at the High Energy Physic experiments of the LHC, the next CERN particle accelerator, will be a challenge for the existing dosimetry technologies. The radiation environment generated by the high-energy proton collisions will be complex reaching locally very high levels. The measurement of the energy deposition, in the IEL and NIEL channels, for semiconductor materials will therefore help to insure the reliability of the electronic systems during the LHC operation. In this work, the qualification of RadFET and p-i-n diode dosimeters, suitable for the measurements in the LHC radiation field, is presented. A series of two RadFETs and two p-i-n diodes have been then selected and characterized in detail in view of their installation at the LHC. Sensors integration issues, supported by Monte Carlo simulations studies, are also presented. Finally, the applicability of OSL materials for the dosimetry of the mixed fields at the LHC has been also discussed here.