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The CMS experiment has been designed with a two-level trigger system: the Level-1 Trigger, implemented on custom-designed electronics, and the High Level Trigger, a streamlined version of the CMS offline reconstruction software running on a…

Instrumentation and Detectors · Physics 2020-11-19 Thiago R. F. P. Tomei

ALICE (A Large Heavy Ion Experiment) is one of the four major experiments at the Large Hadron Collider (LHC) at CERN. The High Level Trigger (HLT) is an online compute farm which reconstructs events measured by the ALICE detector in…

Instrumentation and Detectors · Physics 2019-08-14 David Rohr , Sergey Gorbunov , Volker Lindenstruth

Single muon triggers are crucial for the physics programmes at hadron collider experiments. To be sensitive to electroweak processes, single muon triggers with transverse momentum thresholds down to 20 GeV and dimuon triggers with even…

Instrumentation and Detectors · Physics 2019-03-27 D. Cieri , S. Abovyan , V. Danielyan , M. Fras , P. Gadow , O. Kortner , S. Kortner , H. Kroha , F. Müller , S. Nowak , P. Richter , K. Schmidt-Sommerfeld

Driven by the tremendous effort in researching novel deep learning (DL) algorithms, the training cost of developing new models increases staggeringly in recent years. We analyze GPU cluster usage statistics from a top research institute for…

Machine Learning · Computer Science 2021-03-30 Shang Wang , Peiming Yang , Yuxuan Zheng , Xin Li , Gennady Pekhimenko

During the High Luminosity LHC, the CMS detector will need charged particle tracking at the hardware trigger level to maintain a manageable trigger rate and achieve its physics goals. The tracklet approach is a track-finding algorithm based…

The trigger selection capabilities of the ATLAS detector have been significantly enhanced for the LHC Run- 2 in order to cope with the higher event rates and with the large number of simultaneous interactions (pile-up) per protonproton…

High Energy Physics - Experiment · Physics 2020-09-18 Pierre-Hugues Beauchemin

In the High-Level Trigger (HLT) of both electron-positron and hadron collision experiments, the tracking process for large-volume gaseous detectors typically consumes a latency of hundreds of milliseconds. Upgrades of existing experiments…

Instrumentation and Detectors · Physics 2026-05-18 Pengkun Jia , Zhujun Fang , Hang Zhou , Yuhe Huang , Changqing Feng , Jianbei Liu

ATLAS detector at the LHC will undergo a major Phase-II upgrade for the High Luminosity LHC. The upgrade affects all major ATLAS systems, including the Trigger and Data Acquisition systems. As part of the Level-0 Trigger System, the Global…

Instrumentation and Detectors · Physics 2020-10-16 Viacheslav Filimonov , Bruno Bauss , Volker Büscher , Ulrich Schäfer , Duc Bao Ta

Hardware-based track reconstruction in the CMS and ATLAS trigger systems for the High-Luminosity LHC upgrade will provide unique capabilities. An overview is presented of earlier track trigger systems at hadron colliders, in particular for…

Instrumentation and Detectors · Physics 2020-10-27 Anders Ryd , Louise Skinnari

In the upcoming years, with the upgrade of the LHC to higher luminosities, CMS will be subject to an increasing flux of particles, especially in its most forward region, at | \eta | > 1.6. To consolidate the muon spectrometer of CMS and…

Instrumentation and Detectors · Physics 2013-06-05 Thomas Lenzi , Gilles De Lentdecker

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 luminosity of the electron-proton collider, HERA, will be increased by a factor of five during the long shutdown starting September 2000. At the same time longitudinal lepton beam polarisation will be provided for the collider…

High Energy Physics - Phenomenology · Physics 2007-05-23 K. R. Long

This study presents advanced neural network architectures including Convolutional Neural Networks (CNN), Recurrent Neural Networks (RNN), Long Short-Term Memory Networks (LSTMs), and Deep Belief Networks (DBNs) for enhanced ECG signal…

Hardware Architecture · Computer Science 2023-07-18 Kayode Inadagbo , Baran Arig , Nisanur Alici , Murat Isik

The High-Luminosity LHC (HL-LHC) will provide the unique opportunity to explore the nature of physics beyond the Standard Model of strong and electroweak interactions. Highly selective first-level triggers are essential for the physics…

Instrumentation and Detectors · Physics 2017-02-01 S. Abovyan , V. Danielyan , M. Fras , P. Gadow , O. Kortner , S. Kortner , H. Kroha , F. Mueller , S. Nowak , R. Richter , K. Schmidt-Sommerfeld

The precise analysis and accurate measurement of harmonic provides a reliable scientific industrial application. However, the high-performance DSP processor is the important method of electrical harmonic analysis. Hence, in this research…

Signal Processing · Electrical Eng. & Systems 2018-06-13 Rozita Teymourzadeh , Memtode Jim , Mok Vee hong

The CMS experiment has been designed with a 2-level trigger system: the Level 1 Trigger, implemented on custom-designed electronics, and the High Level Trigger (HLT), a streamlined version of the CMS offline reconstruction software running…

Instrumentation and Detectors · Physics 2015-06-19 Valentina Gori

Finding tracks downstream of the magnet at the earliest LHCb trigger level is not part of the baseline plan of the upgrade trigger, on account of the significant CPU time required to execute the search. Many long-lived particles, such as…

Instrumentation and Detectors · Physics 2020-08-26 Riccardo Cenci , Andrea Di Luca , Federico Lazzari , Michael J. Morello , Giovanni Punzi

The electronic system developed for the SpaCal lead/scintillating-fibre calorimeters of the H1 detector in operation at the HERA ep collider is described in detail and the performance achieved during H1 data-taking is presented. The 10 MHz…

Instrumentation and Detectors · Physics 2009-10-31 H1 SpaCal Group , R. -D. Appuhn et al

The Compact Muon Solenoid (CMS) experiment at the Large Hadron Collider (LHC) is designed to study a wide range of high energy physics phenomena. It employs a large all-silicon tracker within a 3.8 T magnetic solenoid, which allows precise…

Instrumentation and Detectors · Physics 2019-10-29 Thomas James

The trigger systems of the LHC detectors play a crucial role in determining the physics capabilities of the experiments. A reduction of several orders of magnitude of the event rate is needed to reach values compatible with the detector…

Instrumentation and Detectors · Physics 2014-09-10 Valentina Gori