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Charged-particle reconstruction is a fundamental part of the event reconstruction in modern multi-purpose high-energy physics detectors. This paper describes the algorithms used to reconstruct charged particles and primary vertices with the…

Instrumentation and Detectors · Physics 2026-05-11 ATLAS Collaboration

The ATLAS inner detector is used to reconstruct secondary vertices due to hadronic interactions of primary collision products, so probing the location and amount of material in the inner region of ATLAS. Data collected in 7 TeV pp…

High Energy Physics - Experiment · Physics 2012-08-27 ATLAS Collaboration

We summarize the R&D activities on a novel semitransparent microstrip sensor to be used on laser-based alignment systems for silicon trackers. The new sensor is used both for particle tracking and laser detection. The aim of this research…

ALICE is a general purpose experiment dedicated to the study of nucleus-nucleus collisions at LHC. After more than 3 years of successful operation, an upgrade of the apparatus during the second long shutdown of LHC (LS2) in 2017/18 is in…

Instrumentation and Detectors · Physics 2019-08-14 Serhiy Senyukov

Although people spend most of their time indoors, outdoor tracking systems, such as the Global Positioning System (GPS), are predominantly used for location-based services. These systems are accurate outdoors, easy to use, and operate…

Emerging Technologies · Computer Science 2024-10-04 Alpha Diallo , Benoit Garbinato

We describe the design and operation of the RASNIK optical relative alignment system designed for and installed on the CDF inner tracking detectors. The system provides low-cost minute-by-minute alignment monitoring with submicron…

High Energy Physics - Experiment · Physics 2009-11-07 David Goldstein , David Saltzberg

The ALICE apparatus includes an Inner Tracking System for high-precision vertexing and tracking at midrapidity. Thanks to this detector, remarkable results were obtained with Run 2 data in all collision systems studied at the LHC. In this…

Instrumentation and Detectors · Physics 2020-09-01 Mattia Faggin

The inner silicon detector of the Compact Muon Solenoid experiment (CMS) at CERN's LHC consists of 16588 modules. Charged-particle tracks in the detector are used to improve the accuracy to which the position and orientation of the modules…

Instrumentation and Detectors · Physics 2015-05-27 Volker Blobel , Claus Kleinwort , Frank Meier

3D cell tracking in a living organism has a crucial role in live cell image analysis. Cell tracking in C. elegans has two difficulties. First, cell migration in a consecutive frame is large since they move their head during scanning.…

Computer Vision and Pattern Recognition · Computer Science 2024-03-21 Kaito Shiku , Hiromitsu Shirai , Takeshi Ishihara , Ryoma Bise

Several algorithms for tracking and for primary and secondary vertex reconstruction have been developed by the ATLAS collaboration following different approaches. This has allowed a thorough cross-check of the performances of the algorithms…

Instrumentation and Detectors · Physics 2009-09-29 Pamela Ferrari

This conference proceeding presents the first results of the full CMS Tracker alignment based on several million reconstructed tracks from the cosmic data taken during the commissioning runs with the detector in its final position and…

Instrumentation and Detectors · Physics 2011-05-18 Frank Meier

ALICE (A Large Ion Collider Experiment) is the CERN LHC experiment optimized for the study of the strongly interacting matter produced in heavy-ion collisions and devoted to the characterization of the Quark-Gluon Plasma. To achieve the…

Instrumentation and Detectors · Physics 2019-12-30 Domenico Colella

Detection-based tracking is one of the main methods of multi-object tracking. It can obtain good tracking results when using excellent detectors but it may associate wrong targets when facing overlapping and low-confidence detections. To…

Computer Vision and Pattern Recognition · Computer Science 2023-05-17 Huan Mao , Yulin Chen , Zongtan Li , Feng Chen , Pingping Chen

The Inner Tracking System (ITS) Upgrade for the ALICE experiment at LHC is the first large-area ($\sim$10~m$^2$) silicon vertex detector based on the CMOS Monolithic Active Pixel Sensor (MAPS) technology, which combines sensitive volume and…

Instrumentation and Detectors · Physics 2020-01-10 G. Contin

The ALICE collaboration is preparing an upgrade of the three innermost layers of the current Inner Tracking System (ITS) during the next LHC long shutdown (LS3). The new ITS detector will use wafer-scale (up to \SI{27}{cm} in length)…

Instrumentation and Detectors · Physics 2026-01-29 Stefania Perciballi

The ALICE Collaboration is developing a novel vertexing detector to extend the heavy-flavour physics programme of the experiment during Run 4 by improving the pointing resolution of the tracking, particularly at low transverse momentum. It…

Instrumentation and Detectors · Physics 2024-08-05 Domenico Colella

The ATLAS Pixel detector is a high-resolution, low-noise silicon-based device designed to provide tracking and vertexing information within a distance of 12 cm from the LHC beam axis. It consists of approximately 80 million pixel channels…

Instrumentation and Detectors · Physics 2019-08-13 J. Biesiada

Tracking-by-detection has become an attractive tracking technique, which treats tracking as a category detection problem. However, the task in tracking is to search for a specific object, rather than an object category as in detection. In…

Computer Vision and Pattern Recognition · Computer Science 2015-10-13 Changxin Gao , Feifei Chen , Jin-Gang Yu , Rui Huang , Nong Sang

The SemiConductor Tracker (SCT) together with the Pixel detector and the Transition Radiation Tracker (TRT) form the central tracking system of the ATLAS experiment at the LHC. It consists of single-sided microstrip silicon sensors, which…

Instrumentation and Detectors · Physics 2019-08-14 Vasiliki A. Mitsou

The upgrade of the Inner Tracking System (ITS) of ALICE is planned for the second long shutdown of the LHC in 2019-2020. The ALICE physics program after the shutdown requires the ITS to have improved tracking capabilities and improved…

Instrumentation and Detectors · Physics 2015-11-30 Monika Kofarago