ALICE ITS3: the first truly cylindrical inner tracker

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F24%3A00584996" target="_blank" >RIV/61389005:_____/24:00584996 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.22323/1.449.0538" target="_blank" >https://doi.org/10.22323/1.449.0538</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.22323/1.449.0538" target="_blank" >10.22323/1.449.0538</a>

Result language

angličtina

Original language name

ALICE ITS3: the first truly cylindrical inner tracker

Original language description

During the next LHC Long Shutdown 3 in 2026-2028, the ALICE Collaboration plans to replace the three innermost layers of the current Inner Tracking System (ITS) with truly cylindrical layers, made of wafer-scale, thin (< 50 μm), and bent Monolithic Active Pixel Sensors (MAPS) that will be produced with the 65 nm CMOS imaging process. To fabricate the wafer-scale sensors, a technology, called stitching, is utilized to 'stitch' small reticles and build sensors up to 300 mm in length in a single wafer. The upgrade aims to decrease the material budget of the innermost layers from the present 0.35% of X0/layer to 0.05% of X0/layer, essentially reducing it to the silicon contribution only. The upgraded ITS will improve the pointing resolution in the transverse plane by a factor of 2 and increase the reconstruction efficiency for low-pT tracks. The construction of this detector encompasses many cutting-edge R&D efforts, for instance, production and characterization of the MAPS in the 65 nm CMOS process, fabrication of the stitched wafer-scale MAPS, and development of an ultra-light detector mechanics and a new air cooling system. This contribution provides a brief overview of the ALICE ITS3 detector and the R&D achievements, mentioned above.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

10304 - Nuclear physics

Project

<a href="/en/project/LM2023040" target="_blank" >LM2023040: Research infrastructure for experiments at CERN</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Proceedings of Science

ISBN

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ISSN

1824-8039

e-ISSN

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Number of pages

6

Pages from-to

538

Publisher name

Sissa Medilab srl

Place of publication

Trieste

Event location

Hamburg

Event date

Aug 21, 2023

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

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