Speaker
Mr
Edoardo Rossi
(DESY)
Description
During the High-Luminosity phase of the LHC the luminosity will be almost five times larger than the present LHC luminosity, corresponding to approximately 200 inelastic proton-proton interactions per beam crossing, while the total integrated luminosity will exceed 3000 fb^-1. In order to cope with the higher radiation level and the higher pile-up, the ATLAS experiment will need a complete replacement of the current tracking system with an all silicon detector, the Inner Tracker (ITk). For this reason, new radiation-hard sensors and front-end chips will be used and are now under development. With the pre-production phase expected in 2018-2019 and the module production expected to start in 2020, a full understanding of the current prototype modules is essential. This talk presents the results of the tests of a prototype barrel module and of the first prototype end-cap module. The measurements were performed at the DESY test beam facility and the track reconstruction was done using the EUTelescope framework. Significant modifications to EUTelescope have been made to handle the radial geometry of the strips of the end-cap module. The main focus of the analysis lies in the study of the efficiency, charge collection and cluster size in different regions of the modules. The obtained results show a good agreement with previous test beam data as well as with the simulations, and give confidence that the ITk strip detector will perform well for the full duration of the HL-LHC.
Primary author
Mr
Edoardo Rossi
(DESY)
Co-authors
Dr
Jiri Kroll
(Academy of Sciences of the Czech Republic)
Dr
John Stakely Keller
(Carleton University)
