The technology of Silicon Drift Detectors (SDDs) has been selected for thetwo instruments aboard the Large Observatory For X-ray Timing (LOFT) spacemission. LOFT underwent a three year long assessment phase as candidate for theM3 launch opportunity within the "Cosmic Vision 2015 -- 2025" long-term scienceplan of the European Space Agency. During the LOFT assessment phase, we studiedthe displacement damage produced in the SDDs by the protons trapped in theEarth's magnetosphere. In a previous paper we discussed the effects of the NonIonising Energy Losses from protons on the SDD leakage current. In this paperwe report the measurement of the variation of Charge Collection Efficiencyproduced by displacement damage caused by protons and the comparison with theexpected damage in orbit.

The effect of the displacement damage on the Charge Collection Efficiency in Silicon Drift Detectors for the LOFT satellite

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