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The simulation of the ATLAS detector is a major challenge, given the complexity of the detector and the demanding environment of the LHC. The apparatus, one of the biggest and most complex ever designed, requires a detailed, flexible and,…

Data Analysis, Statistics and Probability · Physics 2007-05-23 A. Rimoldi , A. Dell'Acqua

This thesis investigates the application of state-of-the-art advances in generative neural networks for fast simulation of the Zero Degree Calorimeter (ZDC) neutron detector in the ALICE experiment at CERN. Traditional simulation methods…

Instrumentation and Detectors · Physics 2024-07-25 Maksymilian Wojnar

ALICE at CERN-LHC is an experiment dedicated to the study of high-energy heavy-ion collision. In this paper we will briefly describe the experimental layout and give an overview on the installation status of the ALICE detector components…

Instrumentation and Detectors · Physics 2019-08-14 H. R. Schmidt

ALICE (A Large Heavy Ion Experiment) is one of the four large scale experiments at the Large Hadron Collider (LHC) at CERN. The High Level Trigger (HLT) is an online computing farm, which reconstructs events recorded by the ALICE detector…

After close to 20 years of preparation, the dedicated heavy ion experiment ALICE took first data with proton collisions at the LHC starting in November 2009. This article summarizes initial operation and performance of ALICE at the LHC as…

High Energy Physics - Experiment · Physics 2019-08-13 Jurgen Schukraft

As from the run 3 of CERN LHC scheduled in 2022, the upgraded ALICE experiment will use a Common Readout Unit (CRU) at the heart of the data acquisition system. The CRU, based on the PCIe40 hardware designed for LHCb, is a common interface…

Instrumentation and Detectors · Physics 2021-06-23 O. Bourrion , J. Bouvier , F. Costa , E. David , J. Imrek , T. M. Nguyen , S. Mukherjee

The physics programme of the ALICE experiment at CERN-LHC comprises besides studies of high-energy heavy-ion collisions measurements of proton-proton interactions at unprecedented energies, too. This paper focuses on the global event…

Nuclear Experiment · Physics 2019-08-13 Ingrid Kraus

In 2002 the ATLAS experiment started a series of Data Challenges (DC) of which the goals are the validation of the Computing Model, of the complete software suite, of the data model, and to ensure the correctness of the technical choices to…

Distributed, Parallel, and Cluster Computing · Computer Science 2007-05-23 Gilbert Poulard

The IRIS-HEP Analysis Grand Challenge (AGC) is designed to be a realistic environment for investigating how analysis methods scale to the demands of the HL-LHC. The analysis task is based on publicly available Open Data and allows for…

High Energy Physics - Experiment · Physics 2023-04-12 Oksana Shadura , Alexander Held

The ALICE Collaboration completed the upgrade of the detector and is now commissioning for the beginning of the data taking during LHC Run 3. In parallel, R&D activities and simulation studies are being performed to define the future of the…

High Energy Physics - Experiment · Physics 2022-11-09 Domenico Colella , for the ALICE Collaboration

Selection of recent (in March 2022) results from the heavy-ion experiment ALICE at the CERN LHC, chosen to address various stages of the nucleus-nucleus reaction.

Nuclear Experiment · Physics 2022-08-11 Dariusz Miskowiec

The online event reconstruction for the ALICE experiment at CERN requires processing capabilities to process central Pb-Pb collisions at a rate of more than 200 Hz, corresponding to an input data rate of about 25 GB/s. The reconstruction of…

Instrumentation and Detectors · Physics 2019-08-14 David Rohr , Sergey Gorbunov , Artur Szostak , Matthias Kretz , Thorsten Kollegger , Timo Breitner , Torsten Alt

The two innermost layers of the ALICE inner tracking system are instrumented with silicon pixel detectors. Single chip assembly prototypes of the ALICE pixels have been tested in high energy particle beams at the CERN SPS. Detection…

Nuclear Experiment · Physics 2009-11-11 D. Elia

ALICE (A Large Ion Collider Experiment) is the heavy-ion detector designed to study the strongly interacting state of matter realized in relativistic heavy-ion collisions at the CERN Large Hadron Collider (LHC). A major upgrade of the…

Instrumentation and Detectors · Physics 2019-08-14 Pascal Boeschoten , Filippo Costa

ALICE (A Large Ion Collider Experiment) at the CERN Large Hadron Collider (LHC) is designed to study proton-proton and heavy-ion collisions at ultra-relativistic energies. The main goal of the experiment is to assess the properties of quark…

Instrumentation and Detectors · Physics 2022-10-25 Livia Terlizzi

A major upgrade of the ALICE experiment is in progress and will result in high-rate data taking during LHC Run 3 (2022-2024). The LHC interaction rate at Point 2 where the ALICE experiment is located will be increased to $50\ \mathrm{kHz}$…

The ALICE Collaboration has just finished a major detector upgrade that increases the data-taking rate capability by two orders of magnitude and will allow to collect unprecedented data samples. For example, the analysis input for 1 month…

Instrumentation and Detectors · Physics 2022-11-23 Raluca Cruceru

The presence of the phase transition can manifest itself by the characteristic behavior of several observables which may vary dramatically from one event to the other. Thus, the study of various conserved quantities on an event-by-event…

High Energy Physics - Experiment · Physics 2019-08-21 Satyajit Jena

ATLAS, a general-purpose experiment at the Large Hadron Collider (LHC), makes use of a large internationally-distributed computing infrastructure, including over $10^6$ TB of managed data on disk and tape and almost one million…

High Energy Physics - Experiment · Physics 2026-04-16 ATLAS Collaboration

A new bookkeeping system called Jiskefet is being developed for A Large Ion Collider Experiment (ALICE) during Long Shutdown 2, to be in production until the end of LHC Run 4 (2029). Jiskefet unifies two functionalities: a) gathering,…

Human-Computer Interaction · Computer Science 2021-02-03 Marten Teitsma , Vasco Chibante Barosso , Pascal Boeschoten , Patrick Hendriks