Speaker
Description
The HiRadMat facility offers a unique possibility to study the effect of possible HL-LHC beam failure scenarios on the ATLAS detector. The requirement of detector safety is of primary importance for an accelerator, specially at HL-LHC where the increase of the TAS aperture will potentially increase the exposure of detectors to machine induced background.
By mean of complex Monte Carlo simulation, it is possible to estimate the energy deposited in the ATLAS detectors in case of accidental HL-LHC proton beam failures. The risk to produce a irremediable damages to the detector is established by comparing the energy deposition with the damage threshold.
In 2017 and 2018, for the first time, it was possible to estimate the damage threshold of ATLAS pixel and strip detector modules thanks to fast extracted and intense proton beam irradiation provided at the HiRadMat facility.
Post irradiation analysis showed that the mechanism for the protection of sensor and electronics in case of large deposit of charges in the bulk material is not yet completely understood.
We propose new test beam campaigns to evaluate the damage threshold of the latest ATLAS ITk pixel and strip detector prototypes which will be used at HL-LHC and possibly the performance of alternative solutions to protect sensor and electronics.