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The CMS experiment has been designed with a two-level trigger system: the Level 1 (L1) Trigger, implemented on custom-designed electronics, and the High Level Trigger (HLT), a streamlined version of the CMS reconstruction and analysis…

Instrumentation and Detectors · Physics 2014-09-16 Zeynep Demiragli

The performance of the jet trigger for the ATLAS detector at the LHC during the 2011 data taking period is described. During 2011 the LHC provided proton-proton collisions with a centre-of-mass energy of 7 TeV and heavy ion collisions with…

High Energy Physics - Experiment · Physics 2016-10-12 ATLAS Collaboration

The outer shell of the ATLAS experiment at the LHC consists of a system of toroidal air-core magnets in order to allow for the precise measurement of the transverse momentum p$_T$ of muons, which in many physics channels are a signature of…

Instrumentation and Detectors · Physics 2011-01-27 Jörg Dubbert , Sandra Horvat , Oliver Kortner , Hubert Kroha , Robert Richter

The COMET experiment at J-PARC, Japan, aims to search for muon to electron conversion with aluminium nuclei, achieving a sensitivity four orders of magnitude higher than the current upper limit at a 90% confidence level. The proton beam…

High Energy Physics - Experiment · Physics 2023-08-29 Yuki Fujii

In this work, we present a new approach for fast tracking on multiwire proportional chambers with neural networks. The tracking networks are developed and adapted for the first-level trigger at hadron collider experiments. We use Monte…

Instrumentation and Detectors · Physics 2022-11-17 Chang Sun , Takumi Nakajima , Yuki Mitsumori , Yasuyuki Horii , Makoto Tomoto

The Kaos spectrometer is maintained by the A1 collaboration at the Mainz Microtron MAMI with a focus on the study of (e,e'K^+) coincidence reactions. For its electron-arm two vertical planes of fiber arrays, each comprising approximately 10…

The Liquid Argon Jet Trigger, installed in the H1 experiment at HERA, implements in 800 ns a real-time cluster algorithm by finding local energy maxima, summing their immediate neighbors, sorting the resulting "jets" by energy, and applying…

Instrumentation and Detectors · Physics 2009-05-18 Bob Olivier

We present JetFormer, a versatile and scalable encoder-only Transformer architecture for particle jet tagging at the Large Hadron Collider (LHC). Unlike prior approaches that are often tailored to specific deployment regimes, JetFormer is…

We present the upgraded design, construction, and beam test results for the Muon Trigger Detector (MTD) developed for the muon Electric Dipole Moment (muEDM) experiment at the Paul Scherrer Institute (PSI) in Switzerland. This experiment…

Increasing complexity of scientific simulations and HPC architectures are driving the need for adaptive workflows, where the composition and execution of computational and data manipulation steps dynamically depend on the evolutionary state…

Computational Engineering, Finance, and Science · Computer Science 2015-06-30 Janine C. Bennett , Ankit Bhagatwala , Jacqueline H. Chen , C. Seshadhri , Ali Pinar , Maher Salloum

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

ArgoNeuT, or Argon Neutrino Test, is a 170 liter liquid argon time projection chamber designed to collect neutrino interactions from the NuMI beam at Fermi National Accelerator Laboratory. ArgoNeuT operated in the NuMI low-energy beam line…

A study of the electron identification and selection efficiency of the L1 Trigger algorithm has been performed using the combined ECAL/HCAL test beam data. A detailed discussion of the electron isolation and its impact on the selection…

Instrumentation and Detectors · Physics 2009-05-12 P. Q. Ribeiro , M. Gallinaro , J. Varela

The determination of charged particle trajectories (tracking) in collisions at the CERN Large Hadron Collider (LHC) is one of the most important aspects for event reconstruction at hadron colliders. This is especially true in the high…

Instrumentation and Detectors · Physics 2022-12-06 H. Abidi , A. Boveia , V. Cavaliere , D. Furletov , A. Gekow , C. W. Kalderon , S. Yoo

There is a need for machine learning models to evolve in unsupervised circumstances. New classifications may be introduced, unexpected faults may occur, or the initial dataset may be small compared to the data-points presented to the system…

Machine Learning · Computer Science 2023-06-05 Samuel Prescott , Adrian Wheeldon , Rishad Shafik , Tousif Rahman , Alex Yakovlev , Ole-Christoffer Granmo

This short document presents a discussion of rates of a wide range of processes at a muon collider. The goal is to provide a first look at what will fill the detector, how often processes of interest are occurring, and the implications for…

High Energy Physics - Experiment · Physics 2025-08-11 Tova Holmes , Lawrence Lee

The ATLAS detector at CERN's Large Hadron Collider (LHC) will be exposed to proton-proton collisions from beams crossing at 40 MHz. At the design luminosity of 10^34 cm^-2 s^-1 there are on average 23 collisions per bunch crossing. A…

Instrumentation and Detectors · Physics 2014-11-18 David Berge

The COMET experiment at J-PARC aims to search for the neutrinoless transition of a muon to an electron. We have developed the readout electronics board called ROESTI for the COMET straw tube tracker. We plan to install the ROESTI in the gas…

The rate of muons from LHC $pp$ collisions reaching the surface above the ATLAS interaction point is measured and compared with expected rates from decays of $W$ and $Z$ bosons and $b$- and $c$-quark jets. In addition, data collected during…

The Transformer Machine Learning (ML) architecture has been gaining considerable momentum in recent years. In particular, computational High-Energy Physics tasks such as jet tagging and particle track reconstruction (tracking), have either…

High Energy Physics - Experiment · Physics 2026-02-17 Arjan Blankestijn , Uraz Odyurt , Amirreza Yousefzadeh
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