Technical Design Report for the Upgrade of the ALICE Inner Tracking System

Abelev, B. and Antičić, Tome and Gotovac, Sven and Mudnić, Eugen and Planinić, Mirko and Poljak, Nikola and Simatović, Goran and Šuša, Tatjana and Vicković, Linda and Zyzak, M. (ALICE Collaboration) (2014) Technical Design Report for the Upgrade of the ALICE Inner Tracking System. Journal of Physics G, 41 (8). 087002. ISSN 0954-3899

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Abstract

ALICE (A Large Ion Collider Experiment) is studying the physics of strongly interacting matter, and in particular the properties of the Quark–Gluon Plasma (QGP), using proton–proton, proton–nucleus and nucleus–nucleus collisions at the CERN LHC (Large Hadron Collider). The ALICE Collaboration is preparing a major upgrade of the experimental apparatus, planned for installation in the second long LHC shutdown in the years 2018–2019. A key element of the ALICE upgrade is the construction of a new, ultra-light, high- resolution Inner Tracking System (ITS) based on monolithic CMOS pixel detectors. The primary focus of the ITS upgrade is on improving the performance for detection of heavy-flavour hadrons, and of thermal photons and low-mass di- electrons emitted by the QGP. With respect to the current detector, the new Inner Tracking System will significantly enhance the determination of the distance of closest approach to the primary vertex, the tracking efficiency at low transverse momenta, and the read-out rate capabilities. This will be obtained by seven concentric detector layers based on a 50 μm thick CMOS pixel sensor with a pixel pitch of about 30×30 μm2. This document, submitted to the LHCC (LHC experiments Committee) in September 2013, presents the design goals, a summary of the R&D activities, with focus on the technical implementation of the main detector components, and the projected detector and physics performance.

Item Type: Article
Keywords: LHC, ALICE, Inner Tracking System
Date: 2014
Subjects: NATURAL SCIENCES > Physics
Additional Information: © 2014 CERN on behalf of The ALICE Collaboration. Content from this work may be used under the terms of theCreative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Published 2 July 2014.
Divisions: Faculty of Science > Department of Physics
Project code: 119-0982887-1006, 098-0982887-2878
Publisher: IOP Publishing
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 12 Dec 2017 21:11
Last Modified: 12 Dec 2017 21:11
URI: http://digre.pmf.unizg.hr/id/eprint/5749

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