In modern-day calorimetry, the shower shape reconstruction technique is rapidly evolving based on the outstanding achievements of the particle-flow algorithm in LHC experiments, leaving the question of feasibility to reconstruct longitudinal shower shapes for fiber-sampling calorimeters. Therefore, there were several efforts to speculate longitudinal shower shape for such calorimeters by...
DUNE is a long-baseline neutrino oscillation experiment, which will observe neutrinos produced by a high-power, broadband neutrino beam by means of 70 kton mass liquid argon time-projection chambers. The Far Detector will be installed at the Sanford Underground Research Facility (SURF), located at a depth of 1500 m in South Dakota (USA). The Near Detector complex, located at Fermilab, is...
The Jiangmen Underground Neutrino Observatory (JUNO) is a multi-purpose experiment under construction in southern China, expecting to begin data taking in 2023. The detector consists of a target mass of $2 \cdot 10^7\,$kg of an organic liquid scintillator contained in a spherical acrylic vessel, which is located about 650$\,$m underground and submerged in a water pool to shield it from...
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 two to three orders of magnitude compared to existing devices, have been developed during the past 15 years by the CALICE collaboration and are now reaching maturity. This contribution will...
Performant electromagnetic calorimeters suited for a Particle Flow approach rely on their granularity and compactness to unravel the contributions of nearby showers. For practical reasons, their readout electronics must be close to the sensors, hence present a very low power dissipation, in a scalable geometry allowing for long (~1.5–1.8 m) detector cassettes serviced from a single end. To do...
Based on the particle-flow paradigm, a novel hadronic calorimeter (HCAL) with scintillating glass tiles is proposed to address major challenges from precision measurements of jets at the future lepton colliders, such as the Circular Electron Positron Collider (CEPC). Tiles of high-density scintillating glass, with a high energy sampling fraction, can significantly improve the hadronic energy...
Resistive Plate Chambers (RPCs) are the key active media of the muon systems of current and future collider experiments as well as the CALICE (semi-)digital hadron calorimeter. The outstanding issues with the RPCs can be listed as the loss of efficiency for the detection of particles when subjected to high particle fluxes, and the limitations associated with the common RPC gases.
We...
Extreme spatial granularity is the key component for the full exploitation of Particle Flow Algorithms, which attempt to measure each particle in a hadronic jet individually. In this context, the CALICE Collaboration developed the Digital Hadron Calorimeter (DHCAL). The DHCAL uses Resistive Plate Chambers as active media and is read out with 1 $\times$ 1 cm$^2$ pads and digital (1-bit)...
Future HEP experiments at the energy and intensity frontiers present stringent challenges to fast and heavy inorganic scintillators in radiation tolerance. Up to 500 Grad and 5×10$^{18}$ n$_{eq}$/cm$^2$ of one MeV equivalent neutron fluence are expected by the forward calorimeters at the proposed Future Hadron Circular Collider (FCC-hh). This paper reports results of investigations of neutrons...
The CMS Electromagnetic Calorimeter (ECAL) is made of 75848 lead-tungstate scintillating crystals. The excellent intrinsic energy resolution of the CMS ECAL is preserved with the aid of a precise light monitoring system. The high radiation doses from the LHC collisions in the ECAL crystals and photodetectors affects the light output. Crystal and photodetector response changes are monitored in...
The Mu2e experiment at Fermi National Accelerator Laboratory will search for charged-lepton flavour violating neutrino-less conversion of negative muons into electrons in the coulomb field of an Al nucleus. The conversion electron has a monoenergetic 104.967 MeV signature slightly below the muon mass and will be identified by a complementary measurement carried out by a high-resolution tracker...
Noble liquid calorimetry is a well proven technology that successfully operated in numerous particle physics detectors (D0, H1, NA48, NA62, ATLAS, …). Its excellent energy resolution, linearity, stability, uniformity and radiation hardness as well as good timing properties make it a very good candidate for future hadron and lepton colliders. Recently, a highly granular noble liquid sampling...
Inorganic scintillators activated by charge transfer luminescence Yb3+ are considered promising ultrafast medium to break the ps timing barrier for future HEP applications. Inorganic scintillators in ceramic form have also attracted a broad interest due to its lower fabrication temperature, effective usage of raw material, and no need for aftergrowth mechanical processing. Lu2O3:Yb and...
Deep learning methods are being applied to high-energy physics widely. We are investigating deep learning implementations for the dual-readout calorimeter. The dual-readout calorimeter, proposed for future colliders (FCC and CEPC), consists of scintillating and Cerenkov fibers readout together to measure hadronic showers with high energy resolution. Particle and jet identification has always...
For high momentum pi0 mesons, the angle between the two final-state photons decreases with the increase of the momentum of the pi0, which enhances the probability of overlapping electromagnetic showers. The performance of the cluster splitting algorithm in the EMC reconstruction is crucial for the mass resolution measurement of the pi0 at high momenta. If there are several local maxima in a...
The HERD experiment is a future space experiment which will be installed on the Chinese Space Station in 2027. The detector is based on a 3D, homogeneous, isotropic, deep and finely segmented calorimeter, and it will be capable to detect particles from every direction. Thanks to its large acceptance and energy resolution, it will expand the measurements of proton and nuclei fluxes up to the...
Future electron-positron collider experiments, aiming at precise measurement of the Higgs boson, electroweak physics and the top quark, set a high demand on the calorimetry system. Based on the particle-flow paradigm, a novel highly granular crystal electromagnetic calorimeter (ECAL) is proposed to address major challenges from jet reconstruction and to achieve the optimal EM energy resolution...
Plastic scintillators are one of the most versatile and inexpensive particle detection options available which is why the largest particle physics experiments, CMS and ATLAS, are using them. A challenging aspect of scintillators is their relatively low radiation hardness which might be inadequate for the HL-LHC program. In this study, results on the effects of ionizing radiation on the signal...
To address the challenges of providing high performance calorimetry in future hadron collider experiments under conditions of high luminosity and high radiation (FCC-hh environments), we are conducting R&D on advanced calorimetry techniques suitable for such operation, based on scintillation and wavelength-shifting technologies and photosensor (SiPM and SiPM-like) technology. In particular,...
In search for physics Beyond the Standard Model (BSM), the foreseen program of the High-Energy Physics community relies on the precision measurements of the Higgs, W, and Z bosons. Existing collider experiments and their foreseen upgrades are limited in the precision by which various BSM processes could be measured. Thus, future collider experiments pose stringent requirements on the...
Electromagnetic calorimetry in high-radiation environments, e.g. forward regions of lepton and hadron collider detectors, is quite challenging. Although the total absorption crystal calorimeters have superior performance as electromagnetic calorimeters, the availability and the cost of the radiation-hard crystals are the limiting factors as radiation-tolerant implementations. The sampling...
The optimisation of the calorimeters for Future Higgs factory experiments is a central task in evaluating their performance and cost. A reliable simulation of the calorimeters, based on realistic assumptions, if possible based on existing devices, is critical. Beyond the GEANT4 description, which provides the energy deposited in the sensitive medium (here silicon), a realistic simulation must...
The CALICE technological RPC-based SDHCAL prototype that fulfils all the requirements of compactness, hermeticity and power budget of the future lepton accelerator experiments, has been extensively tested and has provided excellent results in terms of the energy resolution and shower separation.
New phase of R&D to validate completely the SDHCAL option for the International Linear Detector...
The radiation damage in optical materials mostly manifests itself as the loss of optical transmission. This loss can recover to some extent in the presence of natural light, and at a faster rate in the presence of stimulating light. On the other hand, the systematic study of the dynamics of the recovery as a function of the stimulating light parameters such as its wavelength, intensity and...
Calorimetric space experiments have been employed for direct measurements of cosmic-ray spectra above the TeV region. According to several theoretical models, relevant features in both electron and nuclei fluxes are expected. Unfortunately, sizable disagreements between current results of different space calorimeters are presents. In order to improve future experiment accuracy, it is...
The existence of baryon number violating processes is one of the Sakharov conditions considered necessary to explain the matter-antimatter asymmetry in the universe, but is yet to be observed. The NNBAR experiment, planned to be housed at the European Spallation Source (ESS) will perform a
search with free neutrons for neutron-antineutron oscillations with a gain in sensitivity of three...
State of the art research in particle physics at the precision frontier aims at finding evidence of physics beyond the standard model by measuring prohibited or suppressed processes and quantities with an unprecedented accuracy. For such experiments it is common to search for a faint signal in a waste amount of backgrounds.
In the field of charged lepton flavour violation (cLFV), one is...
A multi-messenger, space-based cosmic ray detector for gamma rays and charged particles poses several design challenges due to the different instrumental requirements for the two kinds of particles. The optimization of the detector, to have a good angular resolution needed for gamma rays, and a good geometric factor needed for charged particles is the main purpose of the Tracker-In-Calorimeter...
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...
