Conveners
T12: Detector R&D and Data Handling: LHC Run 3
- Magnus Mager (CERN)
- Vincent Boudry (LLR – École polytechnique)
T12: Detector R&D and Data Handling: Miscellaneous
- Annika Vauth (Universität Hamburg)
- Vincent Boudry (LLR – École polytechnique)
T12: Detector R&D and Data Handling: Instrumentation 1
- Alessandro Cardini (INFN Sezione di Cagliari, Italy)
- Vincent Boudry (LLR – École polytechnique)
T12: Detector R&D and Data Handling: Silicon and timing detectors
- Alessandro Cardini (INFN Sezione di Cagliari, Italy)
- Annika Vauth (Universität Hamburg)
T12: Detector R&D and Data Handling: LHC Run2 operations and extrapolations
- Annika Vauth (Universität Hamburg)
- Vincent Boudry (LLR – École polytechnique)
T12: Detector R&D and Data Handling: Trigger/Readout/Reconstruction
- Magnus Mager (CERN)
- Annika Vauth (Universität Hamburg)
T12: Detector R&D and Data Handling: Future colliders
- Magnus Mager (CERN)
- Vincent Boudry (LLR – École polytechnique)
T12: Detector R&D and Data Handling: LHC Run 4, Run 5
- Alessandro Cardini (INFN Sezione di Cagliari, Italy)
- Magnus Mager (CERN)
T12: Detector R&D and Data Handling: Reconstruction
- Magnus Mager (CERN)
- Vincent Boudry (LLR – École polytechnique)
T12: Detector R&D and Data Handling: Calorimeter
- Annika Vauth (Universität Hamburg)
- Alessandro Cardini (INFN Sezione di Cagliari, Italy)
The ATLAS experiment at the LHC can record about 1 kHz of physics collisions, out of an LHC design bunch crossing rate of 40 MHz. To achieve a high selection efficiency for rare physics events while reducing the significant background rate, a two-level trigger system is used.
The event selection is based on physics signatures, such as the presence of energetic leptons, photons, jets or...
The inner tracking system of the CMS experiment, which comprise of Silicon Pixel and Silicon Strip detectors, is designed to provide a precise measurement of the momentum of charged particles and to reconstruct the primary and secondary vertices. The movements of the different substructures of the tracker detectors driven by the operating conditions during data taking, require to regularly...
The ALICE Inner Tracking System (ITS) has recently been replaced with a full silicon-pixel detector constructed entirely with CMOS monolithic active pixel sensors. It consists of three inner layers (50 $\mu$m thick sensors) and four outer layers (100 $\mu$m thick sensors) covering 10 m$^2$ and containing 12.5 billion pixels with a pixel size of 27 $\mu$m x 29 $\mu$m. Its increased granularity,...
Liquid argon (LAr) sampling calorimeters are employed by ATLAS for all electromagnetic calorimetry in the pseudo-rapidity region |η| < 3.2, and for hadronic and forward calorimetry in the region from |η| = 1.5 to |η| = 4.9. After detector consolidation during a long shutdown, Run-2 started in 2015 and about 150 fb$^{-1}$ of data at a center-of-mass energy of 13 TeV was recorded. Phase-I...
The LHCb detector is undergoing a comprehensive upgrade for data taking in the LHC's Run 3, which is scheduled to begin in 2022. The increased data rate in Run 3 poses significant data-processing and handling challenges for the LHCb experiment. The offline computing and dataflow model is consequently also being upgraded to cope with the factor 30 increase in data volume and associated demands...
The determination of charged-particle trajectories (tracking) and the identification of primary collision vertices (vertexing) are complex parts of the event reconstruction chain in collider experiments and constitute the building blocks of most high level analysis objects. During the Run 2 data-taking in ATLAS, tracking was by far the most resource intensive step, for an average number of p-p...
The upgrade of the Large Hadron Collider (LHC), with an increase of its luminosity up to 5-7 × 10^34cm^−2s^−1, will cause a huge growth of the background rates expected by the experiments. For this reason, the Compact Muon Solenoid (CMS) experiment is going through an upgrade project, which includes the installation of a new station, called GE1/1, consisting of 144 Triple-Gas Electron...
During the second Long Shutdown (LS2) of the LHC, ALICE is installing three new detectors and implementing continuous data readout with online reconstruction and data compression. The changes are needed to benefit from the increased luminosity of the LHC during Run 3 and 4. The ALICE interaction rate will increase by two orders of magnitude, reaching 50 kHz for Pb-Pb and up to 1 MHz for pp...
The LUXE experiment aims at studying high-field QED in electron-laser and photon-laser interactions, with the 16.5 GeV electron beam of the European XFEL and a laser beam with power of up to 350 TW. The experiment will measure the spectra of electrons and photons in non-linear Compton scattering where production rates in excess of 109 are expected per 1 Hz bunch crossing. At the same time...
The ESS Neutrino Super-Beam (ESSnuSB) is a proposed long-baseline neutrino oscillation experiment, performed with a high-intensity neutrino beam, to be developed as an extension to the European Spallation Source proton linac currently under construction in Lund, Sweden. The neutrinos would be detected with the near and far detectors of the experiment, the former within several hundred meters...
The Deep Underground Neutrino Experiment (DUNE) is an upcoming long-baseline neutrino experiment which will study neutrino oscillations. Neutrino oscillations will detected at the DUNE far detector 1300 km away from the start of the beam at Fermilab. The DUNE near detector (ND) will be located on-site at Fermilab, and will be used to provide an initial characterization of the neutrino beam, as...
Gaseous Time Projection Chambers (TPC) with optical readout are an innovative and very promising detection technique to enhance the the sensitivity for light dark matter candidates.
The Cygno experiment is pursuing this technique by developing a TPC operated with gas mixtures at atmospheric pressure equipped with a Gas Electron Multipliers (GEM) amplification stage that produces visible...
The LEGEND collaboration is developing an experimental search for the neutrinoless double-beta ( $0\nu\beta\beta$) decay of the $^{76}$Ge isotope.
Its first phase, LEGEND-200, uses 200 kg of $^{76}$Ge-enriched high-purity germanium (HPGe) detectors in an active liquid argon shield and is currently under construction at the Laboratori Nazionali del Gran Sasso (LNGS) in Italy.
Inverted coaxial...
The Any Light Particle Search II (ALPS II) is a light-shining-through-a-wall (LSW) experiment at DESY, Hamburg, attempting to detect axions and axion-like-particles (ALPs), which can comprise dark matter and solve long-standing problems in physics. ALPS II can convert photons into axions/ALPs in the presence of a magnetic field, in an optical cavity. After passing through an opaque,...
The Silicon Vertex Detector (SVD) consists of four layers of double-sided silicon strip sensors. The SVD is one of the two vertex subdetectors within Belle II.
Since the start of data taking in 2019 at the Super-KEKB collider (KEK, Japan), which has the highest peak-luminosity ever recorded, the SVD is operated reliably and with high efficiency, despite exposure to harsh beam...
The SuperKEKB/Belle II experiment, the successor of the former KEKB/Belle experiment at KEK, has started its physics data taking with the full detector system since March 2019. The Time-of-Propagation (TOP) detector was designed and integrated into the Belle II detector for particle identification in the barrel region. The TOP detector consists of quartz radiators and photodetectors,...
The Global Argon Dark Matter Collaboration is pursuing the construction, at the Gran Sasso Laboratory (LNGS), of DarkSide-20k a dark matter direct search experiment designed as a 20-tonne fiducial mass Time Projection Chamber (TPC) with SiPM based photosensors, expected to be free of any instrumental background for an exposure of >100 ton x years.
Large-area cryogenic SiPM tile modules...
Future circular and linear colliders as well as the Large Hadron Collider in the High-Luminosity era have been imposing unprecedented challenges on the radiation hardness of particle detectors that will be used for specific purposes e.g. forward calorimeters, beam and luminosity monitors.
We performed research on the radiation-hard active media for such detectors, particularly calorimeters,...
The spectacular progress in the improvement of scintillation properties of Ce doped Gd-based crystalline compounds was demonstrated in the last decade. That makes possible use of these materials for neutron detection, similarly to Li-based inorganic scintillators. Particularly, the materials of interest are compositionally disordered Gd3Al2Ga3O12 (GAGG) garnets, which are tolerant to a...
We present the latest performance studies of high-granularity resistive Micromegas detectors for tracking applications in high-rate environment.
With the aim of developing resistive Micromegas able to efficiently and reliably work in HEP experiments where particle fluxes as high as 10 MHz/cm$^2$ are expected, we have built and characterised several prototypes with high-granularity readout...
A double-phase argon Time Projection Chamber (TPC), with an active volume of $5\times 5 \times 5$ cm$^3$, has been designed and constructed for the Recoil Directionality (ReD) experiment, within the DarkSide collaboration. The aim of the ReD project is to investigate the directional sensitivity of argon-based TPCs via columnar recombination to nuclear recoils in the energy range of interest...
Single page abstract attached as a pdf.
Water Cherenkov detectors play a crucial role in the study of neutrinos, providing an affordable way to instrument enormous target masses. As neutrino experiments transition from discovery to precision measurement understanding the performance of these detectors becomes more and more important – in the latest T2K oscillation result the Super-Kamiokande detector uncertainty is the largest...
Plastic scintillator detectors are widely used in high-energy physics. Often they are used as active neutrino target, both in long and short baseline neutrino oscillation experiments. They can provide 3D tracking with 4$\pi$ coverage and calorimetry of the neutrino interaction final state combined with a very good particle identification, sub-nanosecond time resolution. Moreover, the large...
The Large Hadron Collider at CERN will undergo a major upgrade in the Long Shutdown 2 from 2025-2027. The so-called High Luminosity LHC (HL-LHC) is expected to deliver peak instantaneous luminosities of about $5-7.5\times10^{34}$cm$^{-2}$s$^{-1}$ and an integrated luminosity of about $3000-4500\;$fb$^{-1}$ during ten years of operation. In order to fully exploit the delivered luminosity and to...
Silicon pixel detectors are at the core of the current and planned upgrade of the ATLAS detector at the Large Hadron Collider (LHC). As the closest detector component to the interaction point, these detectors will be subjected to a significant amount of radiation over their lifetime: prior to the High-Luminosity LHC (HL-LHC), the innermost layers will receive a fluence of 1-5 10$^{15}$ 1 MeV...
The Compact Muon Solenoid (CMS) detector at the CERN Large Hadron Collider (LHC) is undergoing an extensive Phase II upgrade program to prepare for the challenging conditions of the High-Luminosity LHC (HL-LHC). A new timing detector in CMS will measure minimum ionizing particles (MIPs) with a time resolution of 30-40 ps for MIP signals at a rate of 2.5 Mhit/s per channel at the beginning of...
The increase of the particle flux (pile-up) at the HL-LHC with instantaneous luminosities up to L ~ 7.5 × 10$^{34}$ cm$^{-2}s^{-1}$ will have a severe impact on the ATLAS detector reconstruction and trigger performance.
The end-cap and forward region where the liquid Argon calorimeter has coarser granularity and the inner tracker has poorer momentum resolution will be particularly affected....
The MIP Timing Detector (MTD) of the Compact Muon Solenoid (CMS) will provide precision timestamps with 40 ps resolution for all charged particles up to a pseudo-rapidity of |η|=3. This upgrade will mitigate the effects of pile-up expected under the High-Luminosity LHC running conditions and bring new and unique capabilities to the CMS detector. The endcap region of the MTD, called the Endcap...
The next generation of high energy physics colliders call for major advances in tracking detector technology. In order to cope with the increasingly demanding specifications of HEP experiments an extensive R&D program has been underway within the RD50 Collaboration to develop timing silicon sensors with sufficient radiation tolerance for HL-LHC trackers and beyond. The critical areas of...
One of the great challenges in the next generation of experiments at the future high-luminosity particle colliders will be the event reconstruction, as the large number of interactions occurring at each bunch crossing will create very large occupancies in the innermost detectors. In many of the studies performed for their upgrades, LHC experiments have showed that the addition of track timing...
The MALTA sensors are Depleted Monolithic Active Pixel Sensors (DMAPS) made using 180nm TowerJazz CMOS technology. These have been iteratively designed towards achieving a high radiation tolerance for applications such as in the outer layers of the HL-LHC’s ATLAS Inner Tracker. To date several design enhancements have been implemented to attain a high time resolution (<2ns), granularity as...
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. By the end of the LHC proton-proton collision RUN2 in 2018, the innermost layer IBL, consisting of planar and 3D pixel sensors, had received an integrated...
The Pixel Luminosity Telescope is a silicon pixel detector dedicated to luminosity measurement at the CMS experiment. It consists of 48 silicon sensor planes arranged into 16 "telescopes" of three planes each, with eight telescopes arranged around the beam pipe at either end of the CMS detector, outside the pixel endcap at a distance of approximately 1.75 m from the interaction point. The...
The high-luminosity upgrade of the LHC (HL-LHC) is foreseen to reach an instantaneous luminosity a factor of five to seven times the nominal LHC design value. The resulting, unprecedented requirements for background monitoring and luminosity measurement create the need for new high-precision instrumentation at CMS, using radiation-hard detector technologies. This contribution presents the...
To meet new TDAQ buffering requirements and withstand the high expected radiation doses at the high-luminosity LHC, the ATLAS Liquid Argon Calorimeter readout electronics will be upgraded. Developments of low-power preamplifiers and shapers to meet low noise and excellent linearity requirements are ongoing in 130nm CMOS technology. In order to digitize the analogue signals on two gains after...
The muon campus program at Fermilab includes the Mu2e experiment that will search for a charged-lepton flavor violating processes where a negative muon converts into an electron in the field of an aluminum nucleus, improving by four orders of magnitude the search sensitivity reached so far.
Mu2e’s Trigger and Data Acquisition System (TDAQ) uses {\it otsdaq} as its solution. Developed at...
After the ALICE Long Shutdown 2 detector upgrades, including a new silicon tracker and a GEM-based readout for the TPC, the experiment will operate during LHC Run 3 at a peak Pb-Pb collision rate of 50 kHz, about 50 times higher than in previous running periods. To maximise the significance of physics signals with low S/B ratios for which triggering is not possible, all events will be read out...
After the current LHC shutdown (2019-2022), the ATLAS experiment will be required to operate in an increasingly harsh collision environment. To maintain physics performance, the ATLAS experiment is undergoing a series of upgrades. A key goal of this upgrade is to improve the capacity and flexibility of the detector readout system. To this end, the Front-End Link eXchange (FELIX) system has...
To maximize the physics reach, the LHC plans to increase its instantaneous luminosity to $7.5\times10^{34}$cm$^{-2}$s$^{-1}$, delivering from 3 to 4 ab$^{-1}$ of data at $\sqrt{s}=$14TeV. In order to cope with this operation condition, the ATLAS detector will require new sets of both front-end and back-end electronics. A new trigger and DAQ system will also be implemented with a single-level...
The High-Luminosity LHC will open an unprecedented window on the weak-scale nature of the universe, providing high-precision measurements of the standard model as well as searches for new physics beyond the standard model. Such precision measurements and searches require information-rich datasets with a statistical power that matches the high-luminosity provided by the Phase-2 upgrade of the...
In 2022 the upgraded LHCb experiment will use a triggerless readout system collecting data at an event rate of 30 MHz. A software-only High Level Trigger will enable unprecedented flexibility for trigger selections. During the first stage (HLT1), a sub-set of the full offline track reconstruction for charged particles is run to select particles of interest. After this first stage, the event...
Second stage of high-level trigger at the LHCb, deployed on a CPU server farm, not only selects events but performs an offline-quality alignment and calibration of the detector and uses this information to allow physics analysts to deploy essentially their full offline analysis level selections (including computing isolation, flavour tagging, etc) at the trigger level. This “real time...
The μ-RWELL is a Micro Pattern Gas Detector (MPGD) that inherits some of the best characteristics of existing MPGDs, like GEMs and MicroMegas, while simplifying the detector construction. It also significantly improves the spark protection by incorporating in the design a resistive layer on the anode board. The μ-RWELL [1] is composed of only two elements: the cathode, a simple FR4 PCB with a...
A large, worldwide community of physicists is working to realise an exceptional physics program of energy-frontier, electron-positron collisions with the International Linear Collider (ILC). The International Large Detector (ILD) is one of the proposed detector concepts at the ILC. The ILD tracking system consists of a Si vertex detector, forward tracking disks and a large volume Time...
Detector concepts are being developed for the foreseen electron-positron International Linear Collider (ILC) in Japan. The detectors are being optimized for precision physics in a range of energies between 90 GeV and 1 TeV. This talk will summarize the required performance of detectors, the proposed implementation and the readiness of different technologies needed for the deployment at ILC.
A muon collider has a great potential for particle physics giving the possibility to reach the high center-of-mass energy and luminosity of hadron colliders, with a greatly reduced pile up effect. However, a series of challenges arise mainly from the short muon lifetime and the Beam-induced Background. A complete simulation,based on CLIC’s ILCSoft software, is ongoing to understand the...
The aim of the LHCb Upgrade II is to operate at a luminosity in the range of 1 to 2 $\times$ 10$^{34}$ cm$^{-2}$ s$^{-1}$ to collect a data set of 300 fb$^{-1}$. This will require a substantial modification of the current LHCb ECAL due to high radiation doses in the central region and increased particle densities. The ECAL has to provide good energy and position resolutions in these...
The Electromagnetic Calorimeter (ECAL) of the CMS detector has played an important role in the physics program of the experiment, delivering outstanding performance throughout data taking. The High-Luminosity LHC will pose new challenges. The four to five-fold increase of the number of interactions per bunch crossing will require superior time resolution and noise rejection capabilities. For...
As ALICE is commissioning the detectors after major upgrades for the upcoming LHC Run 3, further projects are already on their way. R&D for a future upgrade of the Inner Tracking System has demonstrated the feasibility to operate thinned monolithic active pixel sensors bent to radii as small as 18 mm. In addition, it has been confirmed that large-scale wafers can be bent to such radii to form...
The Large Hadron Collider (LHC) will be upgraded in several phases to significantly expand its physics program. After the current long shutdown from 2018-2021 (LS2) the accelerator luminosity will be increased to 2 − 3 * 10^34cm−2s−1 exceeding the design value of 1 * 10^34cm−2s−1 allowing the CMS experiment to collect approximately 100 fb−1/year. A subsequent upgrade in 2022-23 will increase...
The High-Luminosity phase of LHC, delivering five times the LHC nominal instantaneous luminosity, is scheduled to begin in late 2027. The ATLAS Tile Hadronic Calorimeter (TileCal) will need new electronics to meet the requirements of a 1 MHz trigger, higher radiation dose, and to ensure sound performance under high pile-up conditions. Both the on- and off-detector TileCal electronics will be...
The Thin Gap Chambers (TGCs) of the LHC-ATLAS are responsible for triggering muons in the endcap region at the hardware trigger stage. The frontend system of TGC will be upgraded for HL-LHC to send binary hit-map at every bunch crossing (BC) to the backend system. Such an operation requires lots of unique challenges: high-performance hit BC Identification, fine-tuned clock distribution, and...
After 9 years of successful operation in proton-proton collisions reaching up to $\sqrt{s}$=13 TeV, the ATLAS detector started in 2018 the preparations for an ambitious physics program, aiming the exploration of very rare processes and extreme phase spaces, an endeavor that will require a substantial increase in the integrated luminosity. To accomplish this purpose, a comprehensive upgrade of...
In parallel to the commissioning of the upgraded detector system for Run 3 and the R&D for upgrades planned for Run 4, ALICE is preparing a next-generation heavy-ion experiment for LHC Run 5. It will give us access to novel measurements of electromagnetic and hadronic probes of the QGP at very low momenta that will remain inaccessible in LHC Run 3+4, both because of detector performance and...
Machine learning enjoys widespread success in High Energy Physics (HEP) analysis at LHC. However the ambitious HL-LHC program will require much more computing resources in the next two decades. Quantum computing may offer speed-up for HEP physics analysis at HL-LHC, and can be a new computational paradigm for big data analysis in High Energy Physics.
We have successfully employed...
ROOT is renovating itself at a fast pace in order to allow physicists to address the unprecedented scale of LHC Run 3 datasets and beyond. Thanks to these recent developments, many HEP analyses could be made 5 to 20 times faster, providing turnaround times in the order of minutes rather than hours.
ROOT's RDataFrame, a high-level interface for data analysis and processing in C++ and Python,...
Detector optimisation and physics performance studies are an integral part for the development of future collider experiments.
The Key4hep project aims at providing a common stack of easy to use software tools for future, or even present, High Energy Physics projects. Key4hep is to a large extent based on software tools that are already very actively used in the community like ROOT, Geant4...
Prototypes of electromagnetic and hadronic imaging calorimeters developed and operated by the CALICE collaboration provide an unprecedented wealth of highly granular data of hadronic showers for a variety of active sensor elements and different absorber materials. In this presentation, we discuss detailed measurements of the spatial and the time structure of hadronic showers to characterise...
The CMS Collaboration is preparing to build replacement endcap calorimeters for the HL-LHC era. The new high-granularity calorimeter (HGCAL) is, as the name implies, a highly-granular sampling calorimeter with approximately six million silicon sensor channels (~1.1 cm^2 or 0.5 cm^2 cells) and about four hundred thousand channels of scintillator tiles readout with on-tile silicon...
The Mu2e experiment at Fermi National Accelerator Laboratory searches for the charged-lepton flavor violating neutrino-less conversion of a negative muon into an electron in the field of an aluminum nucleus. The dynamics of such a process is well modelled by a two-body decay, resulting in a mono-energetic electron with energy slightly below the muon rest mass (104.967 MeV). Mu2e will reach a...
The next generation of collider detectors will make full use of Particle Flow algorithms, requiring high precision tracking and full imaging calorimeters. The latter, thanks to granularity improvements by 2 to 3 orders of magnitude compared to existing devices, have been developed during the past 15 years by the CALICE collaboration and are now reaching maturity. The state-of-the-art status...
The FCAL Collaboration is presently designing and testing electromagnetic sampling calorimeters foreseen for the forward region of future detectors at electron-positron colliders. Two calorimeters, LumiCal and BeamCal, are foreseen for a precise and instant measurement of the luminosity, respectively. For the integrated luminosity, obtained from the rate of low angle Bhabha scattering events,...
Crystal calorimetry has a long history of pushing the frontier of high energy resolution measurements for EM particles. Recent technological developments in the fields of crystal manufacturing and photodetector developments (SiPMs) have opened new perspectives on how a segmented crystal calorimeter with dual-readout capabilities could be exploited for particle detectors at future collider...
To address the challenges of providing high performance EM calorimetry in future experiments under high luminosity and difficult radiation and pileup conditions, R&D is being conducted on promising optical-based technologies that can inform the design of future detectors, with emphasis on ultra-compactness, excellent energy resolution and spatial resolution, and especially fast timing...
Homogeneous electromagnetic calorimeters made of crystalline scintillation elements played a crucial role in the discoveries in high-energy physics experiments at colliders during the last three decades [1]. Nevertheless, their future application at high luminosity collider facilities (High Luminosity LHC, FCC in hh mode) might become limited by radiation damage effects under the charged and...
Nowadays, it is well known that the electromagnetic interaction between high-energy particles and matter experiences substantial modifications when the latter consists of a crystalline medium and its lattice axes are almost parallel to the input beam direction. In particular, strong boosts to both the Bremsstrahlung (by electrons and positrons) and the pair production (by photons) cross...
The IDEA detector concept for a future e+e- collider adopts an ultra-low mass Drift Chamber as the central tracking system. It is a He based, 4 m long and 4 m diameter, fully stereo drift chamber with a total material budget of ~ 0.016 X0 in the barrel part and ~ 0.05 X0 in the end-caps. It will be instrumented with readout electronics implementing the Cluster Counting/Timing techniques,...
The design of the Level-0 endcap muon trigger for the ATLAS experiment at HL-LHC and the status of the development are presented. HL-LHC is planned to start the operation in 2027 with an instantaneous luminosity of 7.5 x 10$^{34}$ cm$^{-2}s^{-1}$. In order to cope with the proton-proton collision rate higher than that of LHC, the trigger and readout system needs to be replaced. The new Level-0...
Ground-based gamma-ray telescopes are built to detect Cerenkov radiation generated by the interaction of the earth's atmosphere and gamma rays coming from different astronomical sources. Major Atmospheric Cerenkov Experiment (MACE) is a 21m diameter ground-based high energy gamma-ray telescope set up by BARC at Hanle (32.7◦ N, 78.9◦ E, 4270 m asl) in the Ladakh region of North India. The...
The design of detector concepts has been driven since a long time by requirements on transverse momentum, impact parameter and jet energy resolutions, as well as hermeticity. Only rather recently it has been realised that the ability to idenfity different types of charged hadrons, in particular kaons and protons, could have important applications at Higgs factories, ranging from improvements...
Detectors filled with noble liquids represent an outstanding technology for the direct dark matter search, both in terms of the radiopurity and the high sensitivity to low energy signals, due to the high scintillation yield. For instance, this allowed the set of the most stringent exclusion limits for WIMPs below 10 GeV/c^{2} with only 50 kg of liquid argon, as done by DarkSide-50...
A muon collider is being proposed as a next generation facility. This collider would have unique advantages, since clean events as in electron-positron colliders are possible, and high collision energy as in hadron colliders could be reached due to negligible beam radiation losses. The beam-induced background, produced by the muon decays in the beams and subsequent interactions, reaches the...
The FASER experiment is a new small and inexpensive experiment that is located 480 meters downstream of the ATLAS experiment at the CERN LHC. The experiment will shed light on currently unexplored phenomena, having the potential to make a revolutionary discovery. FASER is designed to capture decays of exotic particles, produced in the very forward region, beyond the ATLAS detector acceptance....
LaBr3:Ce crystals are used for radiation imaging in medical physics, with PMT or SIPM readout. An R&D was pursued with 1/2 and 1" crystals to realize compact large area detectors (up some cm$^2$ area) with SIPM array readout, aiming at high light yields, good energy resolution/linearity and fast time response for low-energy X-raysdetection. This study was triggered by the FAMU experiment at...
To enhance the Level-1 muon trigger selectivity and maintain good muon tracking capability under future HL-LHC runs with an instantaneous luminosity of 5-7ⅹ10$^{34}$cm$^{-2}s^{-1}$, the ATLAS experiment plans to replace the present innermost station of Muon Spectrometer in the forward region, Small Wheels, with the New Small Wheel (NSW) detector system during its Phase-Ⅰ upgrade. The NSW...
To achieve the challenging target of 1% precision on luminosity determination at the high-luminosity LHC (HL-LHC) with instantaneous luminosity up to 7.5 × 10^{34} cm^{−2} s^{−1}, the CMS experiment will employ multiple luminometers with orthogonal systematics. A key component of the proposed system is a stand-alone luminometer, the Fast Beam Condition Monitor (FBCM), which is fully...
The Future Circular Collider (FCC) is designed to provide unprecedented luminosity and centre-of-mass energies. The physics reach and potential of the different FCC options $e^+e^-$, $pp$, $ep$, is studied with a dedicated software framework, FCCSW, which has been developed and used for the studies published in dedicated Conceptual Design Reports (CDRs) at the end of 2018. Since then a new...
The IDEA Experiment envisaged at future $e^+e^-$ circular colliders (FCCee and CEPC) is currently under design and optimization with dedicated full-simulation investigations. In this talk, we review the main challenges and goals of designing the IDEA fully-projective fiber-based dual-readout calorimeter using the GEANT4 toolkit. Particular attention will be given to geometry design, very-high...
Many physics analyses in Higgs, top and electroweak physics improve the kinematic reconstruction of the final state by constrained fits. This is a particularly powerful tool at $e^+e^-$ colliders, where the initial state four-momentum is known and can be employed to constrain the final state. A crucial ingredient to kinematic fitting is an accurate estimate of the measurement uncertainties,...
In view of the HL-LHC, the Phase-2 CMS upgrade will replace the entire trigger and data acquisition system. The detector readout electronics will be upgraded to allow a maximum L1A rate of 750 kHz, and a latency of 12.5 µs. The upgraded system will be entirely running on commercial FPGA processors and should greatly extend the capabilities of the current system, being able to maintain trigger...
The LHCb detector, designed to measure the decays of heavy hadrons, is a forward-arm spectrometer. Its efficiency can be degraded by collisions with high occupancy: therefore, a technique known as "luminosity levelling" has been used since the start of the LHC Run 1, allowing to control and stabilize the instantaneous luminosity with a precision of 5%. During LHC Runs 1 and 2, this technique...
Within the Phase-II upgrade of the LHC, the readout electronics of the ATLAS LAr Calorimeters is prepared for high luminosity operation expecting a pile-up of up to 200 simultaneous pp interactions. Moreover, the calorimeter signals of up to 25 subsequent collisions are overlapping, which increases the difficulty of energy reconstruction. Real-time processing of digitized pulses sampled at 40...
The flavor transition of solar neutrinos is governed by the vacuum MNS mixing parameters and MSW matter effect, however, the transition from matter- to vacuum-dominated energy region, i.e. the upturn, has not been experimentally observed. It left open questions for light sterile neutrinos or non-standard-model interactions. The solar neutrino spectrum predicted by the solar model also bears...
Future circular and linear colliders, as well as the Large Hadron Collider in the High-Luminosity era, have been imposing unprecedented challenges on the radiation hardness of particle detectors that will be used for specific purposes e.g. forward calorimeters, beam, and luminosity monitors. We performed research on the radiation-hard active media for such detectors, particularly calorimeters,...
Upon the neutrino discovery by Reines & Cowan (1956), they also paved the ground behind much of today’s neutrino detection technology. Large instrumented volumes for neutrino detection have been achieved via a key (implicit) principle: detection medium transparency and/or high purity. Much of that technology has yielded historical success, including several Nobel prizes, where the discovery of...
A ten years extension of the data taking of BESIII experiment, recently approved, motivated an upgrade program both for the leptonic collider BEPCII and for some of the sub-detectors of the spectrometer.
In particular, the current inner drift chamber is suffering from aging and the proposal is to replace it with a detector based on cylindrical GEM technology.
The CGEM detector is made of...
The High Luminosity upgrade of the LHC (HL-LHC) places unprecedented requirements for background monitoring and luminosity measurements. The CMS Tracker Endcap Pixel Detector (TEPX) will be adapted to provide high-precision online measurements of bunch-by-bunch luminosity and beam-induced background. The implementation of dedicated triggering and readout systems, the real-time clustering...
The Resistive Plate Chambers (RPC) system will be upgraded to sustain the harsher HL-LHC conditions and to help maintain good trigger efficiency and performance of the CMS experiment. The present RPC chambers would continue to operate and a new link system will be installed improving the timing resolutions of the RPC system up to 1.5 ns to cope with the expected higher background. The...
The expected High Luminosity Large Hadron Collider (HL-LHC) operations require the experiments at the LHC to upgrade the detectors with new technologies to cope with an increased event rate. A new small-diameter Monitored Drift Tube (sMDT) chamber has been developed to upgrade the Muon Spectrometer of the ATLAS experiment. A prototype sMDT chamber has been constructed at the University of...
The Tile Hadronic Calorimeter (TileCal) covers the central region of the ATLAS experiment. Wavelength-shifting fibres carry the light from active plastic scintillator tiles interspersed with steel absorber plates to photomultiplier tubes (PMTs). Analogue response of the PMTs are amplified, shaped, and digitized by a front-end electronics system that samples the signal from about 10000 channels...
Resistive Plate Chambers (RPCs) are fast gaseous detectors that are employed by the Level-1 muon trigger system in the barrel region of the ATLAS muon spectrometer. The Level-1 muon trigger system selects muon candidates produced in proton-proton collisions at the Large Hadron Collider (LHC). Muon candidates are associated by the Level-1 system with the correct LHC bunch crossing and assigned...
During Run 2 (covering 2015–2018) the LHC achieved instantaneous luminosities as high as 2x10^34cm^2s^1 while delivering proton-proton collisions at \sqrt{s}=13 TeV. The challenge for the trigger system of the CMS experiment is to reduce the registered event rate from about 40 MHz to about 1 kHz. In this poster, muon reconstruction and identification algorithms used during Run 2 and their...
The muon telescope of the Extreme Energy Events (EEE) Project is made by 3 Multigap Resistive Plate Chambers (MRPC). The whole EEE array is composed of 61 telescopes installed in Italian High Schools, built and operated by students and teachers, constantly supervised by researchers.
The unconventional working sites are a unique test field for checking the robustness and the low ageing...
The Large Hadron Collider (LHC) will soon be upgraded to prepare for the high-luminosity phase. To cope with the increase in background rates and trigger requirements, an upgrade is planned to the CMS muon system by installing additional sets of muon detectors based on Gas Electron Multiplier (GEM) technology. The GE2/1 station will consist of 72 GEM chambers, comprised of 288 modules,...
Precision luminosity calibration is critical to determine fundamental parameters of the standard model and to constrain or to discover beyond-the-standard-model phenomena at LHC. The luminosity determination at the LHC interaction point 5 with the CMS detector, using proton-proton collisions at 13 TeV during Run 2 of the LHC (2015–2018), is reported. The absolute luminosity scale is obtained...
To extend the acceptance of the CMS muon spectrometer to the region 2.4<|η|<2.8, stations of triple-GEM chambers, called ME0, are planned for the CMS Phase 2 Upgrade. These large-area, micro-pattern gaseous detectors must operate in a challenging environment with expected background particle fluxes up to 150 kHz/cm2. Unlike traditional non-resistive gaseous detectors, the rate capability of...
The LHCb detector at the LHC is a general purpose detector in the forward region with a focus on studying decays of c- and b-hadrons. For Run 3 of the LHC (data taking foreseen from 2022), LHCb will take data at an instantaneous luminosity of 2 × 10^{33} cm−2 s−1, five times higher than in Run 2 (2015-2018). To cope with the harsher data taking conditions, LHCb will deploy a purely software...
The High Luminosity Large Hadron Collider (HL-LHC) at CERN is expected to collide protons at a centre-of-mass energy of 14 TeV and to reach the unprecedented peak instantaneous luminosity of $5 x 10^{34}\,\mathrm{cm}^{-2} \mathrm{s}^{-1}$ with an average number of pileup events of 140. This will allow the ATLAS and CMS experiments to collect integrated luminosities up to 4000...
The prototype detector of Iron CALorimeter (ICAL) experiment at the India-based Neutrino Observatory i.e., mini-ICAL is currently running at IICHEP Madurai, India. An active cosmic muon veto (CMV) detector is going to house the mini-ICAL from top and sides except the front side. CMV consists of 5cm wide extruded plastic scintillators with embedded two WLS fibres to propagate scintillation...
The ATLAS collaboration at LHC has chosen the resistive Micromegas technology, along with the small-strip Thin Gap Chambers (sTGC), for the high luminosity upgrade of the first muon station in the high-rapidity region, the New Small Wheel (NSW) project. Micromegas quadruplets have been constructed at the involved construction sites in France, Germany, Italy, Russia and Greece. At CERN, the...
The Time-of-Flight (ToF) detectors of the ATLAS Forward Proton (AFP) system are designed to measure the primary vertex z-position of the pp -> pXp processes by comparing the arrival times measured in the ToF of the two intact protons in the final state.
We present the results obtained from a performance study of the AFP ToF detector operation in 2017. A time resolutions of individual...
Innovative 3D metal printing technology has been recently improved and used widely in various fields for both basic science and high technology. The next generation methodology of the novel calorimeter, dual-readout calorimeter, is one of the candidates to achieve very high energy resolutions for both EM and hadronic particles in future e+e- colliders. Traditionally the module of the...
The CMS experiment has greatly benefited from the utilization of the particle-flow (PF) algorithm for the offline reconstruction of the data. The Phase II upgrade of the CMS detector for the High Luminosity upgrade of the LHC (HL-LHC) includes the introduction of tracking in the Level-1 trigger, thus offering the possibility of developing a simplified PF algorithm in the Level-1 trigger. We...
The performance of ATLAS SemiConductor Tracker (SCT) in Run-2 at Large Hadron Collider (LHC) has been reviewed during the current long shutdown. The LHC successfully completed its Run-2 operation (2015-2018) with a total integrated delivered luminosity of 156 fb$^{−1}$ at the centre-of-mass pp collision energy of 13 TeV. The LHC high performance provide us a good opportunity for physics...
The ATLAS level-1 calorimeter trigger (L1Calo) is a hardware-based system that identifies events containing calorimeter-based physics objects, including electrons, photons, taus, jets, and missing transverse energy. In preparation for Run 3, when the LHC will run at higher energy and instantaneous luminosity, L1Calo is currently implementing a significant programme of planned upgrades. The...
The IDEA detector concept for future e+e- colliders proposes a tracking system composed by a Si based inner system, an ultra-low mass Drift Chamber central system with Particle Identification capabilities and a Si based outer layer surrounding the drift chamber. The designed tracking system allows to fulfill the high momentum and angular resolutions requirements for the whole momentum range,...
The ATLAS experiment is currently upgrading the first muon station in the high-rapidity region with the construction of new detector structures, named New Small Wheels (NSW), based on large-size multi-gap resistive strips Micromegas technology and small-strip Thin Gap Chambers (sTGC).
The NSW system will be installed in the ATLAS underground cavern during the LHC long shutdown 2 to enter in...
Dual-Readout Compensated Calorimetry with Tile Sensors Friday, March 19, 2021 2:40 PM (20 minutes) We discuss techniques and materials to develop optimize the energy resolution in the long-term performance of calorimeters as required by the challenging environment of future colliders and high intensity experiments. We extend the Dual Readout/Cerenkov compensation by using 2 tile types, one...
Among the projects currently under study for the post-LHC generation of particle accelerators the muon collider represents a unique machine, which has the capability to provide very high energy leptonic collisions and to open the path to a vast and mostly unexplored Physics program.
However, on the experimental side, such a great Physics potential is accompanied by unprecedented technological...
During the High-Luminosity phase of LHC, scheduled to start in 2026, the ATLAS detector is expected to collect more than 3ab−1 of data at an instantaneous luminosity reaching up to 7.5×10$^{34}$ cm$^{−2}s^{−1}$, corresponding to about 200 inelastic proton-proton collisions per bunch crossing. In order to cope with the large radiation doses and to maintain the physics performance reached up to...
Charged particle trajectory reconstruction at a Muon Collider detector
is more similar to the hadron collider environment than an electron
collider. The presence of the beam-induced background leaves a large
hit multiplicity in the tracking detector that complicates the pattern
recognition stage of track reconstruction. The BIB hits increase the
possible hit combinations that need to be...
This poster presents an update on the Analytical Method (AM) algorithm for trigger primitive (TP) generation in the CMS Drift Tube (DT) chambers during the High Luminosity LHC operation (HL-LHC or LHC Phase 2). The algorithm has been developed and validated both in software with an emulation approach, and through hardware implementation tests. The algorithm is mainly divided in the following...
The High-Luminosity LHC will open an unprecedented window on the weak-scale nature of the universe, providing high-precision measurements of the Standard Model as well as searches for new physics beyond the standard model. The Compact Muon Solenoid (CMS) experiment is planning to replace entirely its trigger and data acquisition system to achieve this ambitious physics program. Efficiently...
PEN is an industrial polyester plastic interesting for the physics community as a new type of wavelength shifting plastic scintillator. Recently, PEN structures with good radio-purity and attenuation length have been successfully produced using the injection compression molding technology. This opens the possibility for usage of PEN as optically active structural components in low-background...
The Large Hadron Collider (LHC) is the current highest energy collider, colliding bunches of protons at center-of-mass energy of 13 TeV. In order to further searches for new physics, even higher energies need to be reached. A $\mu^+ \mu^-$ collider is a viable alternative, allowing physicists to reach a high center-of-mass energy in a smaller ring than hadron colliders, and with smaller...
The success of any particle detector at a collider experiment depends on its ability to measure both the trajectories and energies of particles exiting the interaction point. Especially important and difficult is measuring the trajectories and energies of particles in the very forward region - particles that exit the detector with very shallow angles compared to the beam line. The difficulty...
