DOIAbstract
International audienceThe ATLAS Inner Detector will be replaced for the High-Luminosity LHC (HL-LHC) running in 2026. The new Inner Detector is called the Inner Tracker (ITk). The ITk will cover an extended η-range: at least to |η|<3.2, and likely up to 0|η|<4.. The ITk will be an all-Silicon based detector, consisting of a Silicon strip detector outside of a radius of 362 mm, and a Silicon pixel detector inside of this radius. Several novel designs are being considered for the ITk pixel detector, to cope with high-eta charged particle tracks. These designs are grouped into `extended' and `inclined' design-types. Extended designs have long pixel staves with sensors parallel to the beamline, while inclined designs have sensors angled such th...
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