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LHCb is a forward spectrometer experiment dedicated to the study of new physics in the decays of beauty and charm hadrons produced in proton collisions at the Large Hadron Collider (LHC) at CERN. The VErtex LOcator (VELO) is the microstrip…

Instrumentation and Detectors · Physics 2013-02-26 Rodriguez Perez P. , LHCb VELO Group

Real-time data processing is a central aspect of particle physics experiments with high requirements on computing resources. The LHCb experiment must cope with the 30 million proton-proton bunches collision per second rate of the Large…

We examine the Xeon Phi, which is based on Intel's Many Integrated Cores architecture, for its suitability to run the FDK algorithm--the most commonly used algorithm to perform the 3D image reconstruction in cone-beam computed tomography.…

Distributed, Parallel, and Cluster Computing · Computer Science 2014-01-16 Johannes Hofmann , Jan Treibig , Georg Hager , Gerhard Wellein

Driven by the increasing volume of recorded data, the demand for simulation from experiments based at the Large Hadron Collider will rise sharply in the coming years. Addressing this demand solely with existing computationally intensive…

The LHCb experiment at CERN has undergone a comprehensive upgrade, including a complete re-design of the trigger system into a hybrid-architecture, software-only system that delivers ten times more interesting signals per unit time than its…

Instrumentation and Detectors · Physics 2025-03-26 Luke Grazette , Ross Hunter , Ella Noomen , Nicole Skidmore , Sascha Stahl , Mika Vesterinen , Shunan Zhang

In high-energy physics, the increasing luminosity and detector granularity at the Large Hadron Collider are driving the need for more efficient data processing solutions. Machine Learning has emerged as a promising tool for reconstructing…

High Energy Physics - Experiment · Physics 2025-05-01 Fotis I. Giasemis , Vladimir Lončar , Bertrand Granado , Vladimir Vava Gligorov

Power density constraints are limiting the performance improvements of modern CPUs. To address this we have seen the introduction of lower-power, multi-core processors such as GPGPU, ARM and Intel MIC. To stay within the power density…

LHCb's Run 3 upgrade introduced a fully software-based trigger system operating at 30~MHz, processing an average of 5.6 proton-proton collision vertices per bunch crossing (event). This work presents the development of an inference engine…

High Energy Physics - Experiment · Physics 2026-02-24 Simon Akar , Mohamed Elashri , Conor Henderson , Michael Sokoloff

The LHCb collaboration has redesigned its trigger to enable the full offline detector reconstruction to be performed in real time. Together with the real-time alignment and calibration of the detector, and a software infrastructure to make…

High Energy Physics - Experiment · Physics 2019-06-26 R. Aaij , S. Akar , J. Albrecht , M. Alexander , A. Alfonso Albero , S. Amerio , L. Anderlini , P. d'Argent , A. Baranov , W. Barter , S. Benson , D. Bobulska , T. Boettcher , S. Borghi , E. E. Bowen , L. Brarda , C. Burr , J. -P. Cachemiche , M. Calvo Gomez , M. Cattaneo , H. Chanal , M. Chapman , M. Chebbi , M. Chefdeville , P. Ciambrone , J. Cogan , S. -G. Chitic , M. Clemencic , J. Closier , B. Couturier , M. Daoudi , K. De Bruyn , M. De Cian , O. Deschamps , F. Dettori , F. Dordei , L. Douglas , K. Dreimanis , L. Dufour , G. Dujany , P. Durante , P. -Y. Duval , A. Dziurda , S. Esen , C. Fitzpatrick , M. Fontanna , M. Frank , M. Van Veghel , C. Gaspar , D. Gerstel , Ph. Ghez , K. Gizdov , V. V. Gligorov , E. Govorkova , L. A. Granado Cardoso , L. Grillo , I. Guz , F. Hachon , J. He , D. Hill , W. Hu , W. Hulsbergen , P. Ilten , Y. Li , C. P. Linn , O. Lupton , D. Johnson , C. R. Jones , B. Jost , M. Kenzie , R. Kopecna , P. Koppenburg , M. Kreps , R. Le Gac , R. Lefèvre , O. Leroy , F. Machefert , G. Mancinelli , S. Maddrell-Mander , J. F. Marchand , U. Marconi , C. Marin Benito , M. Martinelli , D. Martinez Santos , R. Matev , E. Michielin , S. Monteil , A. Morris , M. -N. Minard , H. Mohamed , M. J. Morello , P. Naik , S. Neubert , N. Neufeld , E. Niel , A. Pearce , P. Perret , F. Polci , J. Prisciandaro , C. Prouve , A. Puig Navarro , M. Ramos Pernas , G. Raven , F. Rethore , V. Rives Molina , P. Robbe , G. Sarpis , F. Sborzacchi , M. Schiller , R. Schwemmer , B. Sciascia , J. Serrano , P. Seyfert , M. -H. Schune , M. Smith , A. Solomin , M. Sokoloff , P. Spradlin , M. Stahl , S. Stahl , B. Storaci , S. Stracka , M. Szymanski , M. Traill , A. Usachov , S. Valat , R. Vazquez Gomez , M. Vesterinen , B. Voneki , M. Wang , C. Weisser , M. Whitehead , M. Williams , M. Winn , M. Witek , Z. Xiang , A. Xu , Z. Xu , H. Yin , Y. Zhang , Y. Zhou

Collider experiments are equipped with trigger systems that rapidly inspect the physics content emerging from collisions to decide whether the resulting products are worth saving for later analysis. One crucial aspect for analyzing the…

High Energy Physics - Experiment · Physics 2026-04-14 Andrea Coccaro , Carlo Schiavi , Alessandro Zaio

The LHC accelerator complex will be upgraded between 2020-2022, to the High-Luminosity-LHC, to considerably increase statistics for the various physics analyses. To operate under these challenging new conditions, and maintain excellent…

Instrumentation and Detectors · Physics 2015-04-09 C. Nellist , N. Dinu , E. Gkougkousis , A. Lounis

The Large Hadron Collider (LHC) at the European Organisation for Nuclear Research (CERN) will be upgraded to further increase the instantaneous rate of particle collisions (luminosity) and become the High Luminosity LHC (HL-LHC). This…

Detailed detector simulation is the major consumer of CPU resources at LHCb, having used more than 90% of the total computing budget during Run 2 of the Large Hadron Collider at CERN. As data is collected by the upgraded LHCb detector…

High energy physics (HEP) experiments at the LHC generate data at a rate of $\mathcal{O}(10)$ Terabits per second. This data rate is expected to exponentially increase as experiments will be upgraded in the future to achieve higher…

High Energy Physics - Phenomenology · Physics 2022-10-25 Dhananjay Saikumar

Imaging Cherenkov detectors are largely used for particle identification (PID) in nuclear and particle physics experiments, where developing fast reconstruction algorithms is becoming of paramount importance to allow for near real time…

Data Analysis, Statistics and Probability · Physics 2020-05-21 Cristiano Fanelli , Jary Pomponi

Track reconstruction in high track multiplicity environments at current and future high rate particle physics experiments is a big challenge and very time consuming. The search for track seeds and the fitting of track candidates are usually…

Instrumentation and Detectors · Physics 2016-12-21 Andre Schöning

In the next decade, the demands for computing in large scientific experiments are expected to grow tremendously. During the same time period, CPU performance increases will be limited. At the CERN Large Hadron Collider (LHC), these two…

The LHCb VELO Timepix3 telescope is a silicon pixel tracking system constructed initially to evaluate the performance of LHCb VELO Upgrade prototypes. The telesope consists of eight hybrid pixel silicon sensor planes equipped with the…

Future upgrades to the LHC will pose considerable challenges for traditional particle track reconstruction methods. We investigate how artificial Neural Networks and Deep Learning could be used to complement existing algorithms to increase…

Instrumentation and Detectors · Physics 2019-10-16 Felix Dietrich