Specifications and pre-production of n.sup.+./sup.-in-p large-format strip sensors fabricated in 6-inch silicon wafers, ATLAS18, for the inner tracker of the ATLAS Detector for High-Luminosity Large Hadron Collider

0572406 - FZÚ 2024 RIV US eng J - Journal Article
Unno, Y. - Abidi, H. - Affolder, A. - Federičová, Pavla - Kroll, Jiří - Kvasnička, Jiří - Latoňová, Věra - Mikeštíková, Marcela … Total 56 authors
Specifications and pre-production of n⁺-in-p large-format strip sensors fabricated in 6-inch silicon wafers, ATLAS18, for the inner tracker of the ATLAS Detector for High-Luminosity Large Hadron Collider.
Journal of Instrumentation. Roč. 18, č. 3 (2023), č. článku T03008. ISSN 1748-0221. E-ISSN 1748-0221
R&D Projects: GA MŠMT(CZ) LTT17018; GA MŠMT(CZ) LM2018104
Institutional support: RVO:68378271
Keywords : Particle tracking detectors (Solid-state detectors) * Radiation-hard detectors * Si microstrip and pad detectors
OECD category: Particles and field physics
Impact factor: 1.3, year: 2022
Method of publishing: Limited access
https://doi.org/10.1088/1748-0221/18/03/T03008

The ATLAS experiment is constructing new all-silicon inner tracking system for HL-LHC. The strip detectors cover the radial extent of 40 to 100 cm. A new approach is adopted to use p-type silicon material, making the readout in n+-strips, so-called n+-in-p sensors. This allows for enhanced radiation tolerance against an order of magnitude higher particle fluence compared to the LHC. To cope with varying hit rates and occupancies as a function of radial distance, there are two barrel sensor types, the short strips (SS) for the inner 2 and the long strips (LS) for the outer 2 barrel cylinders, respectively. The barrel sensors exhibit a square, 9.8 x 9.8 cm2, geometry, the largest possible sensor area from a 6-inch wafer. The strips are laid out in parallel with a strip pitch of 75.5 mu m and 4 or 2 rows of strip segments. The strips are AC-coupled and biased via polysilicon resistors. The endcap sensors employ a ‚‚stereo-annulus„ geometry exhibiting a skewed-trapezoid shapes with circular edges.
Permanent Link: https://hdl.handle.net/11104/0349074