Study of damages induced on ATLAS silicon by fast extracted and intense proton beam irradiation

Abstract The ATLAS silicon tracker detectors are designed to sustain a high dose integrated over several years of operation. The radiation hardness should also favor the survival of the detector in case of accidental beam losses. In 2006, a measurement published for the ATLAS Pixel detector modules (silicon planar hybridly coupled with FE-I3 electronics) established that they could survive to beam losses (1.5 × 1 0 10  protons/cm 2 in a single bunch) with minimal or no deterioration of performance. In this paper, preliminary results are shown, reporting the effect of a very intensive proton beam releasing a high instantaneous dose in two IBL pixel and one ITk strip module detectors at the HiRadMat facility at CERN.