Conveners
Operation, Performance and Upgrade (incl. HL-LHC) of Present Detectors: Operation, Performance and Upgrade of Present Detectors
- Andrรฉ David (CERN)
- Marcela Mikestikova (Czech Academy of Sciences (CZ))
Operation, Performance and Upgrade (incl. HL-LHC) of Present Detectors: Operation, Performance and Upgrade of Present Detectors
- Andrรฉ David (CERN)
- Marcela Mikestikova (Czech Academy of Sciences (CZ))
Operation, Performance and Upgrade (incl. HL-LHC) of Present Detectors: Operation, Performance and Upgrade of Present Detectors
- Marcela Mikestikova (Czech Academy of Sciences (CZ))
- Silvia Franchino (Heidelberg University (DE))
Operation, Performance and Upgrade (incl. HL-LHC) of Present Detectors: Operation, Performance and Upgrade of Present Detectors
- Silvia Franchino (Heidelberg University (DE))
- Marcela Mikestikova (Czech Academy of Sciences (CZ))
Operation, Performance and Upgrade (incl. HL-LHC) of Present Detectors: Operation, Performance and Upgrade of Present Detectors
- Silvia Franchino (Heidelberg University (DE))
- Ioana Maris
Operation, Performance and Upgrade (incl. HL-LHC) of Present Detectors: Operation, Performance and Upgrade of Present Detectors
- Ioana Maris (Universitรฉ Libre de Bruxelles)
- Silvia Franchino (Heidelberg University (DE))
Operation, Performance and Upgrade (incl. HL-LHC) of Present Detectors: Operation, Performance and Upgrade of Present Detectors
- Andrรฉ David (CERN)
- Katsuro Nakamura
Operation, Performance and Upgrade (incl. HL-LHC) of Present Detectors: Operation, Performance and Upgrade of Present Detectors
- Katsuro Nakamura
- Andrรฉ David (CERN)
Operation, Performance and Upgrade (incl. HL-LHC) of Present Detectors: Operation, Performance and Upgrade of Present Detectors
- Ioana Maris
- Danijela Bogavac (CERN)
Operation, Performance and Upgrade (incl. HL-LHC) of Present Detectors: Operation, Performance and Upgrade of Present Detectors
- Danijela Bogavac (CERN)
- Ioana Maris
Operation, Performance and Upgrade (incl. HL-LHC) of Present Detectors: Operation, Performance and Upgrade of Present Detectors
- Danijela Bogavac (CERN)
- Katsuro Nakamura
Operation, Performance and Upgrade (incl. HL-LHC) of Present Detectors: Operation, Performance and Upgrade of Present Detectors
- Katsuro Nakamura
- Danijela Bogavac (CERN)
The LHC will undergo an upgrade program to deliver an instantaneous luminosity of $7.5\times 10^{34}$ cm$^{-2}$ s$^{-1}$ and collect more than 3 ab$^{-1}$ of data at $\sqrt{s}=$13.6 (14) TeV. To benefit from such a rich data-sample it is fundamental to upgrade the detector to cope with the challenging experimental conditions. The ATLAS upgrade comprises a new all-silicon tracker with extended...
The Belle II experiment at the SuperKEKB $e^+e^-$ collider started recording collision data in 2019, with the ultimate goal of collecting $50~\mathrm{ab}^{-1}$. The wealth of physics results obtained with the current data sample of $424~\mathrm{fb}^{-1}$ demonstrate excellent detector performance. The first years of running, however, also reveal novel challenges and opportunities for reliable...
The Upgrade II of the LHCb experiment is proposed for the long shutdown 4 of the LHC. The upgraded detector will operate at a maximum luminosity of 1.5ร1034 cm-2 s-1, with the aim of reaching a total integrated luminosity of โผ300 fb-1 over the lifetime of the HL-LHC. The collected data will probe a wide range of physics observables with unprecedented accuracy, with unique sensitivities for the...
The LHCb detector underwent a major upgrade after Run-2 of the LHC which
ended in 2018. To fully profit from an increased instantaneous luminosity
of 2x10^33 cm-2s-1 , the lowest level hardware trigger is removed, and the
full event information is shipped to a software trigger at 40 MHz. As a
result, all detector readout electronics is replaced. In addition, the
tracking detectors...
During LHC LS3 (2026-28) ALICE will replace its inner-most three tracking layers by a new detector, "ITS3", based on newly developed wafer-scale monolithic active pixel sensors, bent into cylindrical layers, and held in place by light carbon foam edge ribs. Unprecedented low values of material budget (0.07% per layer) and closeness to interaction point (19 mm) lead to a factor two improvement...
The High Luminosity Large Hadron Collider at CERN is expected to produce proton collisions at a center-of-mass energy of 14 TeV, aiming to achieve an unprecedented peak instantaneous luminosity of 7 x 10^34 cm^-2 s^-1, implying an average pileup of 200. To cope with these running conditions, the CMS detector will undergo an extensive upgrade: Phase-2. This upgrade includes the complete...
The ALICE detector underwent significant upgrades during the LHC Long Shutdown 2 from 2019 to 2021. A key upgrade was the installation of the new Inner Tracking System (ITS2), comprising 7 layers with 12.5 billion pixels over 10 mยฒ, enhancing its tracking capabilities using the ALPIDE chips that are capable of recording Pb-Pb collisions at an interaction rate of 50 kHz. It offers a significant...
The tracking system of the CMS experiment is the worldโs largest silicon tracker with its 1856 and 15148 silicon pixel and strip modules, respectively. To accurately reconstruct trajectories of charged particles the position, rotation and curvature of each module must be corrected such that the alignment resolution is smaller than, or comparable to, the hit resolution. This procedure is known...
The tracking performance of the ATLAS detector relies critically on its 4-layer Pixel Detector. As the closest detector component to the interaction point, this detector is subjected to a significant amount of radiation over its lifetime. At present, at the start of 2024-Run3 LHC collision ATLAS Pixel Detector on innermost layers, consisting of planar and 3D pixel sensors, will operate after...
The LHCb Experiment is running after its first major upgrade to cope with increased luminosities of LHC Run3, being able to improve on many world-best physics measurements. A new tracker based on scintillating fibers (SciFi) replaced Outer and Inner Trackers and is delivering an improved spatial resolution for the new LHCb trigger-less era, with a readout capable of reading ~524k channels at...
To cope with the resulting increase in occupancy, bandwidth and radiation damage at the HL-LHC, the ATLAS Inner Detector will be replaced by an all-silicon system, the Inner Tracker (ITk). The innermost part will consist of a pixel detector with an active area of about 13m^2. Several silicon sensor technologies will be employed. The pixel modules assembled with RD53B readout chips have been...
The HL-LHC is expected to provide an integrated luminosity of 4000 fb-1, that will allow to perform precise measurements in the Higgs sector and improve searches of new physics at the TeV scale. ATLAS is currently preparing for the HL-LHC upgrade, and an all-silicon Inner Tracker (ITk) will replace the current Inner Detector, with a pixel detector surrounded by a strip detector. The strip...
The increased instantaneous luminosity levels expected to be delivered by the High-Luminosity LHC (HL-LHC) will present new challenges to High-Energy Physics experiments, both in terms of detector technologies and software capabilities. The current ATLAS inner detector will be unable to cope with an average number of 200 simultaneous proton-proton interactions resulting from HL-LHC collisions....
The VELO is the detector surrounding the interaction region of the LHCb experiment, responsible of reconstructing the proton-proton collision as well as the decay vertices of long-lived particles. It consists of 52 modules with hybrid pixel technology, with the first sensitive pixel being at 5.1 mm from the beam line. It operates in an extreme environment, which poses significant challenges to...
The LHCb detector has undergone a major upgrade, enabling the experiment to acquire data with an all software trigger, made possible by front-end readout in real-time and fast and efficient online reconstruction. At the heart of the real-time analysis is a fast and efficient track reconstruction, without spurious tracks composed of segments associated with hits from different charged...
At the beginning of 2024 data taking of the Belle II experiment resumed after the Long Shutdown 1, primarily required to install a new two-layer DEPFET detector (PXD) and upgrade accelerator components. The whole silicon tracker (VXD) was extracted, the two halves of the outer strip detector (SVD) were split for the PXD insertion and reconnected again. The new VXD was commissioned for the...
ALICE 3 is the next generation heavy-ion experiment proposed for the LHC Runs 5-6. Its tracking system includes a vertex detector, on a retractable structure inside the beam pipe to achieve a pointing resolution of better than 10 microns for $p_{\rm T}$>200 MeV/c, and a large-area tracker covering 8 units of pseudorapidity (|$\eta$|<4). The tracking system will be based on Monolithic Active...
The Belle II experiment considers upgrading its vertex detector with new pixel sensors to prepare for the target luminosity of 6 10^35 cm-2 s-1. The 5 layers of the new VTX detector are equipped with the same depleted monolithic active CMOS pixel sensor, featuring a 33 ยตm pitch, a 100 ns integration time and a trigger logic matching 30 kHz average rate and 10 ยตs trigger latency for a maximum...
The upgraded LHCb detector is taking data at a five times higher instantaneous luminosity than in Run 2. To cope with the harsher data taking conditions, LHCb deployed a purely software based trigger composed of two stages: in the first stage the selection is based on a fast and simplified event reconstruction, while in the second stage a full event reconstruction is used. This gives room to...
The increased particle flux expected at the HL-LHC poses a serious challenge for the ATLAS detector performance, especially in the forward region which has reduced detector granularities. The High-Granularity Timing Detector (HGTD), featuring novel Low-Gain Avalanche Detector silicon technology, will provide pile-up mitigation and luminosity measurement capabilities, and augment the new...
The Compact Muon Solenoid (CMS) detector at the CERN Large Hadron Collider (LHC) is undergoing an extensive Phase 2 upgrade program to prepare for the challenging conditions of the High-Luminosity LHC (HL-LHC). A new timing detector for CMS will measure minimum ionizing particles (MIPs) with a time resolution of ~30-40 ps. The precise timing information from the MIP timing detector (MTD) will...
The ALICE Collaboration proposed a completely new apparatus, ALICE 3, for the LHC Runs 5 and 6, which will enable novel studies of the QGP focusing on low-pT heavy-flavour production and on precise multi-differential measurements of dielectron emission. The detector consists of a large pixel tracker covering eight units of pseudorapidity and a comprehensive particle identification (PID)...
During the second LHC long shutdown, the LHCb experiment underwent a major upgrade in order to be able to operate at the instantaneous luminosity of 2 ร 10โ33 cmโ2 sโ1, reading data at the full LHC bunch crossing rate. The RICH system of LHCb has been completely refurbished installing new photon detectors (Multi-anode Photomultiplier Tubes) equipped with a custom developed read-out chain. In...
TORCH is a novel particle identification detector for the high-luminosity Upgrade-II of LHCb. This research also contributes to CERNโs DRD4 programme. TORCH is designed to provide 15 ps timing resolution for charged particles, resulting in K/pi (p/K) particle identification up to 10 (15) GeV/c momentum over a 10 m flight path. Cherenkov photons radiated from a 1cm thick quartz plate are...
The ATLAS experiment in the LHC Run 3 uses a two-level trigger system to select events of interest to reduce the 40 MHz bunch crossing rate to a recorded rate of up to 3 kHz of fully-built physics events. The trigger system is composed of a hardware based Level-1 trigger and a software based High Level Trigger.
The selection of events by the High Level Trigger is based on a wide variety of...
The ALICE Fast Interaction Trigger (FIT) has been working since beginning of LHC Run 3, demonstrating excellent performance. FIT serves as an interaction trigger, online luminometer, initial indicator of the vertex position, and the forward multiplicity counter. In the offline mode, it provides collision time, collision centrality and interaction plane. It also selects diffractive and...
The Compact Muon Solenoid (CMS) experiment at the Large Hadron Collider (LHC) features a sophisticated two-level triggering system composed of the Level 1 (L1), instrumented by custom-design hardware boards, and the High-Level Trigger (HLT), a software based trigger. The CMS L1 Trigger relies on separate calorimeter and muon trigger systems that provide jet, e/ฮณ, ฯ, and muon candidates along...
Since 2022, the LHCb experiment is using a triggerless readout system collecting data at an event rate of 30 MHz and a data rate of 4 TB/s. The trigger system, implemented as a high-level trigger (HLT), is split in two stages. During the first stage (HLT1), implemented on GPGPUs, track reconstruction and vertex fitting for charged particles is performed to reduce the event rate to 1 MHz, where...
The ATLAS Level-1 Trigger, crucial for the selection of LHC events at CERN, has been upgraded for Run-3 with advanced processors and FPGAs, extensively using optical links to enhance performance. The software has adopted modern continuous integration tools and advanced monitoring. The Calorimeter Trigger system, utilizing the detector's full granularity, enhances object identification...
We present a novel long-lived particle (LLP) trigger that exploits the Run~3 upgrade of the Compact Muon Solenoid (CMS) Hadron Calorimeter (HCAL), which introduced a precision timing ASIC, programmable front-end electronics, and depth segmentation to the CMS HCAL barrel. The hardware- and firmware-based trigger algorithm identifies delayed jets resulting from the decay of massive LLPs, and...
To fully exploit the extended capability of its upgraded L1 trigger at the High-Luminosity LHC, CMS is pioneering a novel L1 Data Scouting (L1DS) system, capable of acquiring and processing the quasi-offline-quality trigger primitives produced by the upgraded L1 at the accelerator bunch-crossing rate of 40 MHz. The goal of the system is to give full access to potential physics signatures...
As a hadron collider, the LHC produces a large number of hadronic jets. Properties of these jets are good tests of QCD; however, hadronic decays of Standard Model particles, as well as signs of new physics, can be hidden in events containing jets too. The ATLAS jet trigger system is an important element of the event selection process, providing data to study a wide range of physics processes...
The ATLAS Trigger, upgraded for the increased instantaneous luminosity of the LHC in Run 3, includes a topological trigger system (L1Topo) that performs complex multi-object trigger calculations within a very small processing time of 75 ns. L1Topo is based on 6 Xilinx Ultrascale+ 9P FPGAs for massively parallel and fully synchronous computation using 2.5M LUTs per FPGA. Its firmware is...
The IceCube Neutrino Observatory is a cubic kilometer Cherenkov light detector that also searches for signatures of particles beyond the standard model including fractionally charged particles. These are predicted to carry a fraction of the elementary charge, resulting in faint tracks in the detector.
To enhance the efficiency of detecting these faint signatures, we developed the novel Faint...
During the third data taking period, the Large Hadron Collider provided record-breaking integrated and instantaneous luminosities, resulting in huge amounts of data being provided with numbers of interaction per bunch crossing significantly beyond initial projections. In spite of these challenging conditions, the ATLAS Inner Detector (ID) track reconstruction continued to perform excellently....
The efficient and precise reconstruction of charged particle tracks is crucial for the overall performance of the CMS experiment. Prior to the beginning of the Run 3 at the LHC in 2022, the first layer of the Tracker Barrel Pixel subdetector was replaced in order to cope with the high pileup environment, and significant upgrades were made to the track reconstruction algorithms. Performance...
Unstable long-lived particles with lifetime above 100 ps occur in the Standard Model (SM) and show up in many of their extensions. They are, however, challenging to reconstruct and trigger at the LHC due to their very displaced decay vertices. The new software-based trigger system of the LHCb experiment for Run 3 onwards consists of two stages, HLT1 and HLT2, the first one enabling the...
Every bunch crossing at the LHC causes not just one proton-proton interaction, but several which are called "pileup". With the increasing luminosity of the LHC the number of pileup interactions per bunch crossing increases and it will reach up to 200 during high-luminosity LHC operation. Removing the pileup from an event is essential, because it does not only affect the jet energy but also...
Experimental uncertainties related to hadronic object reconstruction can limit the precision of physics analyses at the LHC, and so improvements in performance have the potential to broadly increase the impact of results. Recent refinements to reconstruction and calibration procedures for ATLAS jets and MET result in reduced uncertainties, improved pileup stability and other performance gains....
The electromagnetic calorimeter (ECAL) of the CMS experiment at LHC is crucial for many physics analyses, from Higgs measurements to new physics searches. A precise calibration of the detector and its individual channels is essential to achieve the best possible resolution for electron and photon energy measurements, as well as the measurement of the electromagnetic component of jets and the...
The High Luminosity upgrade of the CERN LHC (HL-LHC) will deliver unprecedented instantaneous and integrated luminosities to the detectors and an average of up to 200 simultaneous interactions per bunch crossing is expected. The CMS detector is undergoing an extensive Phase-2 upgrade program to prepare for these severe conditions and a major upgrade of the electromagnetic calorimeter (ECAL) is...
The Compact Muon Solenoid (CMS) is one of the two multi-purpose experiments at the Large Hadron Collider (LHC) and has a broad physics program. Many aspects of this program depend on the ability to trigger, reconstruct, and identify events with final state electrons, positrons, and photons with high efficiency and excellent resolution.
In this talk we present the characteristics and the...
The FAMU experiment (Fisica degli Atomi MUonici), led by INFN at the Rutherford Appleton Laboratory (UK), is designed to measure the hyperfine splitting of the muonic hydrogen ground state. This measurement, aiming to give an accurate insight of the proton's magnetic structure, plays a key role in verifying the most accurate QED calculations and tests the interaction between proton and muon. A...
We will present the operational status of the LHC Run 3 milliQan detector un, whose installation began last year and was completed during the 2023-4 YETS, and is being commissioned at the time of submission. We will also show any available initial results from data obtained with Run 3 LHC Collisions.
A precise measurement of the luminosity is a crucial input for many ATLAS physics analyses, and represents
the leading uncertainty for W, Z and top cross-section measurements. ATLAS luminosity determination in Run-3 of the LHC follows the procedure developed in Run-2 of the LHC. It is based on van-der-Meer scans during dedicated running periods each year to set the absolute scale, and an...
Precision luminosity evaluation is an essential ingredient to cross section measurements at the LHC, needed to determine fundamental parameters of the standard model and to constrain or discover beyond-the-standard-model phenomena. The latest results of the CMS experiment are reported. The absolute luminosity scale is obtained with beam-separation โvan der Meerโ scans, and the systematic...
The LHCb detector optimised its performance in Run 1 and 2 by stabilising the instantaneous luminosity during a fill, by tuning the distance between the two colliding beams according using a hardware-based trigger. In Run 3, the LHCb experiment has being upgraded to cope with the 5-fold increase of luminosity and it has a fully software-based trigger. A brand new luminometer, PLUME, has been...
Cross section measurements are an essential part of the ALICE physics program and require precise knowledge of the luminosity delivered by the LHC. In ALICE, the luminosity determination relies on visible cross sections measured in dedicated calibration sessions, the van der Meer scans.
In this talk, the methodology and results of the luminosity measurement will be discussed. For the LHC Run...
The CMS Beam Radiation, Instrumentation and Luminosity (BRIL) system aims to provide high-precision bunch-by-bunch luminosity determination in the harsh conditions of the High-Luminosity LHC. Luminosity instrumentation will use diverse technologies, including a dedicated detector, the fast beam conditions monitor (FBCM) with Si-pad sensors and a fast triggerless readout. Various CMS...
The physics program at the HL-LHC calls for a precision in the luminosity measurement of 1%. To fulfill this requirement in an environment characterized by up to 140 simultaneous interactions per bunch crossing (200 in the ultimate scenario), ATLAS will rely on multiple, complementary luminosity detectors, covering the full range of HL-LHC beam conditions from the low-luminosity, low-pileup...
The CMS Collaboration is preparing to replace its current endcap calorimeters for the HL-LHC era with a high-granularity calorimeter (HGCAL), featuring a previously unrealized transverse and longitudinal segmentation, for both the electromagnetic and hadronic compartments, with 5D information (space-time-energy) read out. The proposed design uses silicon sensors for the electromagnetic section...
The FoCal is a high-granularity forward calorimeter to be installed as an ALICE upgrade during the LHC Long Shutdown 3 and take data in Run 4.
It will cover a pseudorapidity interval of $3.4 < \eta < 5.8$, allowing to explore QCD at unprecedented low Bjorken-$x$ of down to $\approx 10^{-6}$ -- a regime where non-linear QCD dynamics are expected to be sizable.
It consists of a compact...
The FASER experiment at the Large Hadron Collider (LHC) aims to detect new, long-lived fundamental particles and to study neutrino interactions. To enhance its discovery potential, a new W-Si preshower detector is being built, which will enable the identification and reconstruction of electromagnetic showers produced by high-energy photon pairs with separations as fine as 200 ยตm. The detector...
To cope with the increase of the LHC instantaneous luminosity, new trigger readout electronics were installed on the ATLAS Liquid Argon Calorimeters. On the detector, 124 new electronic boards digitise at high speed 10 times more signals than the legacy system. Downstream, large FPGAs are processing up to 20 Tbps of data to compute the deposited energies. Moreover, a new control and monitoring...
The Tile Calorimeter (TileCal) is a sampling hadronic calorimeter covering the central region of the ATLAS experiment, with steel as absorber and plastic scintillators as active medium. New electronics of the TileCal is needed to meet the requirements of a 1 MHz trigger, higher ambient radiation, and to ensure better performance under high pile-up conditions at the HL-LHC. Both the on- and...
The Tile Calorimeter (TileCal) is a central hadronic calorimeter of the ATLAS experiment at the LHC. The TileCal plays an important role in the reconstruction of jets, hadronically decaying tau leptons, missing transverse energy and provides information to the dedicated calorimeter trigger. This sampling calorimeter is composed by the plastic scintillating tiles and steel absorbers. The...
A key focus of the physics program at the LHC is the study of head-on proton-proton collisions. However, an important class of physics can be studied where the protons narrowly miss one another and remain intact. In such cases, the electromagnetic fields surrounding the protons can interact producing high-energy photon-photon collisions. Alternatively, interactions mediated by the strong force...
The CMS Precision Proton Spectrometer is designed for studying Central Exclusive Production in pp collisions at the LHC. It consists of tracking and timing detectors to measure protons that escape along the LHC beam line after the interaction in CMS. Both tracking and timing systems underwent a substantial upgrade for Run 3. The tracking detector employs new single-sided 150 um-thick silicon...
The TOTEM experiment at the LHC has produced a
large set of measurements on diffractive processes and pp cross sections.
A new detector, called nT2, has been designed to measure the inelastic scattering rate during the LHC special run of 2023.
Due to the high radiation environment and the special run schedule,
the detector had to be installed in 10-20 minutes at most, then commissioned...
The ATLAS Zero Degree Calorimeters (ZDCs) detect neutral particles emitted at very forward rapidities in nuclear collisions at the LHC. The ZDCs consist of modules of sampling hadronic calorimeters made up of alternating tungsten-fused silica rod layers that act as Cherenkov radiators. They have been upgraded for LHC Run 3 with new fused silica rods for better radiation hardness, along with...
SND@LHC is a new forward experiment measuring neutrinos produced at the LHC. Its detector has been installed in 2021-2022. The first physics data yielded, among the rest, the first observation of neutrinos produced at a collider.
The detector currently in use is a hybrid system based on a 830 kg target with tracking capabilities, followed by a calorimeter and a muon system. Its...
AugerPrime, the major upgrade of the Pierre Auger Observatory, has as its main objective to provide an enhanced estimation of the mass composition of the highest energy cosmic rays on an event-by-event basis. It consists of the addition of a surface scintillator detector (SSD) and a radio antenna on top of the existing water-Cherenkov detectors (WCD) of the surface detector array (SD). An...
LHC restarted in April 2022 and the plan is to run at an average instantaneous luminosity of 2.0ร10^33 cmโ2 sโ1 at the LHCb interaction point, a factor of five higher than in the past. In order to cope with the increased luminosity and to take data at the full bunch crossing frequency (30MHz visible interaction rate) in trigger-less mode, the LHCb Detector has undergone a major...
The most important ATLAS upgrade for LHC run-3 has been in the Muon Spectrometer, where the replacement of the two forward inner stations with the New Small Wheels (NSW) introduced two novel detector technologies: the small strip Thin Gap Chambers (sTGC) and the resistive strips Micromegas (MM). The integration of the two NSW in the ATLAS endcaps marks the culmination of an extensive...
The CMS experiment at the LHC has started data taking in Run 3 at a pp collision energy of 13.6 TeV. A highly performing muon system has been crucial to achieve many of the physics results obtained by CMS. This is achieved by the highly efficient muon spectrometer. The legacy CMS muon detector system consists of Drift Tube chambers in the barrel and Cathode Strip Chambers in the endcap...
The muon system of the CMS experiment at the LHC has been upgraded by the installation of the first station of Gas Electron Multiplier (GEM), GE1/1, over the Long Shutdown 2 (LS2). The High-Luminosity phase of the LHC (HL-LHC) upgrade for CMS incorporates two additional stations, GE2/1 and ME0. Three GE2/1 chambers have been installed in CMS, with two new ones added at the beginning of 2024,...
With the LHC operating beyond its design parameters, CMS keeps pushing the limits of SM measures and BSM searches. In this context, the CMS Drift Tubes community is challenged to assess performance with increasing accuracy, while identifying issues as soon as possible. Novel strategies and tools were explored for these purposes. Dedicated analysis-oriented data formats were designed to retain...
Muon objects play a key role in the CMS physics program, as many are the analyses targeting final state with muons. The ability to trigger, reconstruct, and identify events with prompt and non-prompt muons with high efficiency and excellent resolution is thus crucial for the success of the experiment. In this talk, muon reconstruction, identification and isolation efficiencies as well as...
During runs 1 and 2 of the LHC, the ALICE Muon Spectrometer (MS) has produced many results at forward pseudorapidities (2.5<$\eta$<4) and down to $p_{\rm T}$=0, mainly on quarkonia and open heavy flavors. However, the frontal absorber of the MS prevented the separation of charm and beauty contributions because of the lack of spatial resolution in the interaction point region. To remove this...
The LHCb detector, a single-arm forward spectrometer designed for the investigation of heavy flavor physics at the Large Hadron Collider (LHC), features one of the worldโs largest and most radiation-exposed muon detectors. Throughout Runs 1 and 2 of the LHC, operating at an instantaneous luminosity of 4x10^32 cm-2 s-1 this detector has exhibited remarkable performance, with a tracking...
To withstand the challenging conditions of increased luminosity and higher pileup expected during the high-luminosity LHC (HL-LHC), the muon spectrometer of the CMS experiment will undergo specific upgrades targeting both the electronics and detectors to cope with the new challenging data-taking conditions and to improve the present tracking and triggering capabilities. The upgrade of the...
The CMS Muon system is undergoing significant upgrades for High-Luminosity LHC operation, including the installation of the Muon Endcap 0 (ME0) detector. ME0 is a 6-layer station, scheduled for production starting in 2024, that will expand the geometrical acceptance for muons in the pseudorapidity range 2.03<|ฮท|<2.8. Comprising 18 chambers per endcap, each housing 6 triple-GEM detectors, ME0...
In view of the challenging data taking of CMS in HL-LHC Collisions, an extensive upgrade is underway for the CMS Muon System to ensure its optimal performance in muon triggering and reconstruction. The key role of RPCs as dedicated muon detectors will provide relevant timing information, profiting of their time resolution, to secure sub-bunch crossing event timestamp. To meet the requirements...
Resistive Plate Chambers are used in the ATLAS experiment for triggering muons in the barrel region. These detectors use a Freon-based gas mixture containing C2H2F4 and SF6, high global warming potential greenhouse gases. To reduce the greenhouse gas emissions and cost, it is crucial to search for new environmentally friendly gas mixtures. In August 2023, at the end of the proton-proton...
RPC detectors play a crucial role in triggering events with muons in the ATLAS central region; it is facing a significant upgrade in view of the HL-LHC program. In the next few years, 306 triplets of new generation RPCs, with 1 mm gas gap (instead of 2 mm) will be installed in the innermost region of the ATLAS Muon Barrel Spectrometer, increasing from 6 to 9 the number of tracking layers,...
The current RPC system of the ATLAS Muon Spectrometer is undergoing a major upgrade, with the installation of approximately 1000 RPC detector units of new generation in the innermost barrel layer. The goal of the project is to increase the detector coverage and improve the trigger robustness and efficiency. The Italian collaboration is taking care of the construction and test of the chambers...
