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The CMS detector at the LHC has recorded events from proton-proton collisions, with muon momenta reaching up to 1.8 TeV in the collected dimuon samples. These high-momentum muons allow direct access to new regimes in physics beyond the…

Instrumentation and Detectors · Physics 2020-03-04 CMS Collaboration

We present a study of the CMS trigger system in heavy-ion collisions. Concentrating on two physics channels, dimuons from decays of quarkonia and single jets, we evaluate a possible trigger strategy for Pb+Pb running that relies on event…

Nuclear Experiment · Physics 2019-08-14 G. Roland

The ATLAS Muon Spectrometer is designed to measure the momentum of muons with a resolution of dp/p = 3% and 10% at 100 GeV and 1 TeV momentum respectively. For this task, the spectrometer employs 355,000 Monitored Drift Tubes (MDTs) arrayed…

This article documents the muon reconstruction and identification efficiency obtained by the ATLAS experiment for 139 fb$^{-1}$ of $pp$ collision data at $\sqrt{s}=13$ TeV collected between 2015 and 2018 during Run 2 of the LHC. The…

High Energy Physics - Experiment · Physics 2021-08-27 ATLAS Collaboration

The Compact Muon Solenoid (CMS) is one of two general-purpose detectors that reconstruct the products of high energy particle interactions at the Large Hadron Collider at CERN. The silicon pixel detector is the innermost component of the…

Instrumentation and Detectors · Physics 2019-10-01 Tamas Almos Vami

Studies of heavy-ion collisions at the LHC will benefit from an array of qualitatively new probes not readily available at lower collision energies. These include fully formed jets at ET > 50 GeV, Z0's and abundantly produced heavy flavors.…

Nuclear Experiment · Physics 2019-08-13 Christof Roland

Recent innovations focused around {\em parallel} processing, either through systems containing multiple processors or processors containing multiple cores, hold great promise for enhancing the performance of the trigger at the LHC and…

Computational Physics · Physics 2015-06-17 V. Halyo , P. LeGresley , P. Lujan , V. Karpusenko , A. Vladimirov

Small-diameter Muon Drift Tube (sMDT) chambers have been developed for the ATLAS muon detector upgrade. They possess an improved rate capability and a more compact design with respect to the existing chambers, which allows to equip detector…

Instrumentation and Detectors · Physics 2016-11-17 H. Kroha , O. Kortner , F. Müller , S. Nowak , K. Schmidt-Sommerfeld

We report on the development, implementation, and performance of a fast neural network used to measure the transverse momentum in the CMS Level-1 Endcap Muon Track Finder. The network aims to improve the triggering efficiency of muons…

High Energy Physics - Experiment · Physics 2025-11-21 Efe Yigitbasi

In Run 3 of the LHC, the instantaneous luminosity at the LHCb interaction point has been increased by a factor of five, from $4\times 10^{32}\rm{cm}^{-2}\rm{s}^{-1}$ to $2\times 10^{33}\rm{cm}^{-2}\rm{s}^{-1}$. Several hardware…

The extremely high rate of events that will be produced in the future Large Hadron Collider requires the triggering mechanism to take precise decisions in a few nano-seconds. We present a study which used an artificial neural network…

Data Analysis, Statistics and Probability · Physics 2009-11-10 E. Etzion , H. Abramowicz , Y. Benhammou , D. Horn , L. Levinson , R. Livneh

In view of a possible extension of the forward CMS muon detector system and future LHC luminosity upgrades, Micro-Pattern Gas Detectors (MPGDs) are an appealing technology. They can simultaneously provide precision tracking and fast trigger…

The high-luminosity phase of the Large Hadron Collider (HL-LHC) will result in ten times higher particle background than measured during the first phase of LHC operation. In order to fully exploit the highly-demanding operating conditions…

Instrumentation and Detectors · Physics 2020-06-09 CMS Muon Group

The upgrade of the ATLAS muon spectrometer for high-luminosity LHC requires new trigger and readout electronics for the various elements of the detector. We present the design of a time-to-digital converter (TDC) ASIC prototype for the…

Instrumentation and Detectors · Physics 2018-03-14 Jinhong Wang , Yu Liang , Xiong Xiao , Qi An , John W. Chapman , Tiesheng Dai , Bing Zhou , Junjie Zhu , Lei Zhao

In 2010, the Compact Muon Solenoid (CMS) experiment at LHC recorded over 45 pb^-1 of pp collision data at sqrt(s)=7 TeV. The large collected datasets are of very high quality and have been used to commission and calibrate the CMS detector,…

High Energy Physics - Experiment · Physics 2011-08-05 Christos Leonidopoulos

The CMS-TOTEM Precision Proton Spectrometer (CT-PPS) is an approved project to add tracking and timing information at approximately $\pm$210~m from the interaction point around the CMS detector. It is designed to operate at high luminosity…

Instrumentation and Detectors · Physics 2017-04-05 Michele Gallinaro

For the muon spectrometer of the ATLAS detector at the large hadron collider (LHC), large drift chambers consisting of 6 to 8 layers of pressurized drift tubes are used for precision tracking covering an active area of 5000 m2 in the…

Instrumentation and Detectors · Physics 2016-10-04 M. Deile , H. Dietl , J. Dubbert , S. Horvat , O. Kortner , H. Kroha , A. Manz , S. Mohrdieck , F. Rauscher , R. Richter , A. Staude

For Run 3 (from 2021), the LHC will undergo a significant increase in instantaneous luminosity to 1.5 times its current value which will lead to larger collected statistics and an enhanced sensitivity to new physics. The Phase-1 upgrade of…

Instrumentation and Detectors · Physics 2018-06-26 Shunichi Akatsuka

In the High Luminosity Large Hadron Collider (HL-LHC) program, during the next years, the instantaneous luminosity will increase up to 5 $\times$ 10$^{34}$ cm$^{-2}$ s$^{-1}$ which means a factor five higher than the nominal LHC. In that…

Instrumentation and Detectors · Physics 2021-11-30 R. Aly