Investigations into the impact of locally modified sensor architectures   on the detection efficiency of silicon micro-strip sensors
  The High Luminosity Upgrade of the LHC will require the replacement of the Inner Detector of ATLAS with the Inner Tracker (ITk) in order to cope with higher radiation levels and higher track densities. Prototype silicon strip detector modules are currently developed and their performance is studied in both particle test beams and X-ray beams. In previous test beam studies of prototype modules, silicon sensor strips were found to respond in regions varying from the strip pitch of 74.5 {\upmu}m. The variations have been linked to local features of the sensor architecture. This paper presents results of detailed sensor measurements in both X-ray and particle beams investigating the impact of sensor features (metal pads and p-stops) on the responding area of a sensor strip. 
Luise Poley, Kristin Lohwasser, Andrew Blue, Mathieu Benoit, Ingo   Bloch, Sergio Diez, Vitaliy Fadeyev, Bruce Gallop, Ashle...
physics.ins-det