K. Nikolopoulos
A5011795053- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Particle Detector Development and Performance
- Quantum Chromodynamics and Particle Interactions
- Dark Matter and Cosmic Phenomena
- Computational Physics and Python Applications
- Cosmology and Gravitation Theories
- Neutrino Physics Research
- Radiation Detection and Scintillator Technologies
- Atomic and Subatomic Physics Research
- Distributed and Parallel Computing Systems
- Astrophysics and Cosmic Phenomena
- Black Holes and Theoretical Physics
- Medical Imaging Techniques and Applications
- Muon and positron interactions and applications
- Nuclear Physics and Applications
- Radiation Therapy and Dosimetry
- Superconducting Materials and Applications
- CCD and CMOS Imaging Sensors
- advanced mathematical theories
- Advanced Data Storage Technologies
- Particle Accelerators and Free-Electron Lasers
- Bone fractures and treatments
- Hip and Femur Fractures
- Spinal Fractures and Fixation Techniques
University of Birmingham
2016-2025
Universität Hamburg
2024-2025
Fermi National Accelerator Laboratory
2024
University of Chicago
2024
European Organization for Nuclear Research
2010-2024
AGH University of Krakow
2012-2024
Birmingham City University
2024
University of Toronto
2019-2024
Jagiellonian University
2017-2024
Federación Española de Enfermedades Raras
2024
The Compact Linear Collider (CLIC) is an option for a future $${\mathrm{e}^{+}}{\mathrm{e}^{-}} $$ collider operating at centre-of-mass energies up to $$3\,\text {TeV} , providing sensitivity wide range of new physics phenomena and precision measurements the energy frontier. This paper first comprehensive presentation Higgs reach CLIC three stages: $$\sqrt{s} = 350\,\text {GeV} 1.4 . initial stage operation allows study boson production in Higgsstrahlung ( \rightarrow {\mathrm{Z}}...
Author(s): Contino, R; Curtin, D; Katz, A; Mangano, ML; Panico, G; Ramsey-Musolf, MJ; Zanderighi, Anastasiou, C; Astill, W; Bambhaniya, Behr, JK; Bizon, Dev, PS Bhupal; Bortoletto, Buttazzo, Cao, Q-H; Caola, F; Chakrabortty, J; Chen, C-Y; S-L; Florian, D de; Dulat, Englert, Frost, JA; Fuks, B; Gherghetta, T; Giudice, Gluza, Greiner, N; Gray, H; Hartland, NP; Issever, Jelinski, Karlberg, Kim, JH; Kling, Lazopoulos, Lee, SJ; Liu, Y; Luisoni, Mazzitelli, Mistlberger, Monni, P; Nikolopoulos, K;...
We present the Migdal In Galactic Dark mAtter expLoration (MIGDAL) experiment aiming at unambiguous observation and study of so-called effect induced by fast-neutron scattering. It is hoped that this elusive atomic process can be exploited to enhance reach direct dark matter search experiments lower masses, but it still lacking experimental confirmation. Our goal detect predicted electron emission which thought accompany nuclear scattering with low, calculable, probability, deploying an...
Spherical proportional counters (SPCs) are gaseous particle detectors sensitive to single ionization electrons in their target media, with large detector volumes and low background rates. The $\mbox{NEWS-G}$ collaboration employs this technology search for low-mass dark matter, having previously performed searches at the Laboratoire Souterrain de Modane (LSM), including a recent campaign 135 cm diameter SPC filled methane. While situ calibrations of response were carried out LSM,...
Abstract Management of high energy intra-articular fractures the proximal tibia, associated with marked soft-tissue trauma, can be challenging, requiring combination accurate reduction and minimal invasive techniques. The purpose this study was to evaluate whether intervention hybrid external fixation such using Orthofix system provide an acceptable treatment outcome less complications. Between 2002 2006, 33 patients a median ISS 14.3 were admitted our hospital, level I trauma centre,...
This report summarises the physics opportunities for study of Higgs bosons and dynamics electroweak symmetry breaking at 100 TeV pp collider.
This study investigates linkages between personal competencies and leadership style among female small micro business owners. Although prior research suggests that is shaped according to a leader's traits abilities, few empirical studies corroborate this, particularly Using survey data from the North West of ngland, orkshire, orth ales, we reveal transformational most dominant adopted, it linked perceived human as well entrepreneurial competencies.
This paper responds to recent calls explore the nuances of interaction between sciences, arts and their inherent creativity better understand potential within teaching learning. Building on previous arguments that science-arts-creativity relationship is dialogic relational, this research focuses question: How are dialogue material/embodied activity manifested creative pedagogy? We begin with a fusion Bakhtinian-inspired New-Materialist understandings drawing out importance embodiment in...
A 10-year follow-up evaluation of the effectiveness school screening for scoliosis performed in a closed island population.To evaluate diagnostic accuracy methods used and to re-examine long-term program.The forward-bending test efficacy programs have not been clearly established.In 1987, 2700 pupils aged 8 16 years from Samos were screened scoliosis. The Adams test, Moire topography, scoliometer, humpometer used. Radiologic spine was available each pupil number false-negative false-positive...
Electronic government is the use of Information and Communication Technology in transformation government; primarily aiming to improvement accessibility, effectiveness responsibility. It based on diffusion information policy development. guides increasing citizens' participation active development affecting mechanisms democracy. democracy (e-democracy) includes technological innovations that allow empowerment democratic institutions with or without internet. E-democracy aims production...
The spherical proportional counter is a gaseous detector used in variety of applications, including direct dark matter and neutrino-less double beta decay searches. ACHINOS multi-anode structure read-out technology that overcomes the limitations single-anode structures for large-size detectors operation under high pressure. A resistive presented, where 3D printed central component coated Diamond-Like Carbon (DLC) layer. production testing structure, terms stability resolution, described.
Elucidating the nature of dark matter is a key priority that would involve discovering new fundamental physics and essential for understanding structure evolution universe. Despite decades-long ever-more-sensitive searches, particle content remains elusive. Direct searches candidates, to-date, focused mainly on candidates in 10 GeV to 1 TeV, however, more recently lighter with sub-GeV mass have been brought spotlight. This an experimentally challenging region, which largely uncharted. The...
Deep learning-based object detection algorithms enable the simultaneous classification and localization of any number objects in image data. Many these are capable operating real-time on high resolution images, attributing to their widespread usage across many fields. We present an end-to-end pipeline designed for rare event searches Migdal effect, at speeds, using high-resolution data from scientific CMOS camera readout MIGDAL experiment. The effect nuclear scattering, critical sub-GeV dark...
Spherical Proportional Counters (SPCs) are a novel gaseous detector technology employed by the NEWS-G low-mass dark matter search experiment for their high sensitivity to single electrons from ionization. In this paper, we report on first characterization of electron response SPCs with unprecedented precision, using UV-laser calibration system. The experimental approach and analysis methodology presented along various direct applications upcoming next phase at SNOLAB. These include...
The NEWS-G collaboration uses spherical proportional counters (SPCs) to search for weakly interacting massive particles (WIMPs). In this paper, we report the first measurements of nuclear quenching factor in neon gas at 2 bar using an SPC deployed a neutron beam TUNL facility. energy-dependence is modeled simple power law: $\ensuremath{\alpha}{\mathrm{E}}_{\mathrm{nr}}^{\ensuremath{\beta}}$; determine its parameters by simultaneously fitting data collected with detector over range energies....
We present the conceptual design and physics potential of DarkSPHERE, a proposed 3 m in diameter spherical proportional counter electroformed underground at Boulby Underground Laboratory. This effort builds on R&D performed experience acquired by NEWS-G Collaboration. DarkSPHERE is primarily designed to search for nuclear recoils from light dark matter 0.05--10 GeV mass range. Electroforming shell implementation shield based pure water ensures background level below 0.01 dru. These, combined...
Kaluza-Klein axions appear in theories with extra dimensions as higher mass, significantly shorter lifetime, excitations of the Peccei-Quinn axion. When produced Sun, they would remain gravitationally trapped solar system, and their decay to a pair photons could provide an explanation corona heating problem. A low-density detector discriminate such signal from background, by identifying separation interaction point two photons. The NEWS-G collaboration uses large volume spherical...
The effect of ionisation quenching for ions is critical experiments relying on the measurement low energy recoils, such as direct Dark Matter searches. We present factor estimates over a range energies protons, α-particles, and heavier in H2, CH4, N2, Ar, CO2, C3H8 gases, estimated from respective reference W-value measurements. resulting factors are compared with predictions SRIM.