ATLAS pixel detector design for the HL-LHC

作者：Smart B^*

来源：Journal of Instrumentation, 2017, 12(02): C02011.

DOI：10.1088/1748-0221/12/02/C02011

• Detector design and construction technologies and materials
• Particle tracking detectors
• Detector cooling and thermo-stabilization
• Detector modelling and simulations I (interaction of radiation with matter, interaction of photons with matter, interaction of hadrons with matter, etc)

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 eta-range: at least to vertical bar eta vertical bar < 3.2, and likely up to vertical bar eta vertical bar < 4.0. 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.

• 出版日期2017-2