European organization for nuclear research (cern)

This paper presents the techniques used to monitor radiation damage in the LHCb Tracker Turicensis from 2011 to 2017. Bulk leakage currents in the silicon sensors are monitored continuously, while the full depletion voltage of the sensors is estimated at regular intervals by performing dedicated scans of the charge collection efficiency as a function of the applied bias voltage. Predictions of the expected leakage currents and full depletion voltages are extracted from the simulated radiation profile, the luminosity delivered by the LHC, and the thermal history of the silicon sensors. Good agreement between measurements and predictions is found. Submitted to JINST c © CERN on behalf of the LHCb collaboration, license CC-BY-4.0. ar X iv :1 80 9. 05 06 3v 1 [ ph ys ic s. in sde t] 1 3 Se p 20 18