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ATLAS pixel detector design for the HL-LHC

Abstract : The 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 that they point towards the interaction point. The relative advantages and challenges of these two classes of designs will be examined in this paper, along with the mechanical solutions being considered. Thermal management, radiation-length mapping, and electrical services will also be discussed.
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Contributor : Claudine Bombar Connect in order to contact the contributor
Submitted on : Monday, February 20, 2017 - 3:14:39 PM
Last modification on : Friday, November 6, 2020 - 3:34:36 AM

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B. Smart. ATLAS pixel detector design for the HL-LHC. 8th International Workshop on Semiconductor Pixel Detectors for Particles and Imaging (PIXEL 2016), Sep 2016, Sestri Levante, Italy. pp.C02011 ⟨10.1088/1748-0221/12/02/C02011⟩. ⟨in2p3-01472084⟩



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