Conveners
Contributed talks: Medical Physics & Radiotherapy
- Herman White
- Stephen Inkoom
Contributed talks: High Energy Physics (LHC & Beyond)
- Diallo Boye (Brookhaven National Laboratory)
- Deepak Kar (University of the Witwatersrand)
Contributed talks: Solar & Renewable Energy Technologies
- Komlan Segbéya GADEDJISSO-TOSSOU (University of Lome)
- Kossi Tepe (University of Lome, Togo)
Contributed talks: Astrophysics & Cosmology
- Diallo Boye (Brookhaven National Laboratory)
- Mirjana Povic
Contributed talks: Nuclear & Particle Physics Applications
- Herman White
- Benard Mulilo (University of Zambia)
Contributed talks: Physics Education, Policy & Social Impact
- Christine Darve (European Spallation Source)
Contributed talks: Computational Physics & Machine Learning
- Horst Severini (University of Oklahoma (US))
Contributed talks: Applied & Fluid Physics
- Diallo Boye (Brookhaven National Laboratory)
- Azwinndini Muronga (Nelson Mandela University)
Contributed talks: Materials Physics & Nanoscience
- Milohum Mikesokpo DZAGLI (University of Lomé)
- Herman White
Over the past decade, researchers have focused on developing affordable, durable, and efficient electrocatalysts for photoelectrochemical (PEC) water splitting as a potential remedy for the energy crisis. Among these, CuO has emerged as a promising photocathode material due to its unique physicochemical characteristics and narrow bandgap, making it one of the few photocatalysts capable of...
Abstract
Introduction: Radiotherapy aims to precisely target tumors while sparing healthy tissue, traditionally relying on CT imaging for accurate dose planning. However, CT has limitations in soft tissue contrast and exposes patients to ionizing radiation. MRI offers superior soft tissue contrast without radiation but lacks electron density information, restricting its use in dose planning....
The ATLAS detector is one of the two general-purpose detectors at the Large Hadron Collider (LHC)at CERN, designed to explore a wide range of physics, including the discovery of new particles, precision measurements of known particles, and searches for signs of new physics beyond the Standard Model. One of the essential parts of the ATLAS experiment is the trigger system, which manages large...
South Africa's ongoing energy crisis, marked by regular load shedding, presents formidable obstacles to economic growth and sustainable development, particularly in rural regions with restricted access to the national grid. Renewable energy microgrids present a practical solution for rural electrification, providing cleaner, decentralized, and more resilient power options. However, the...
Evaluation of secondary cancer risk after radiotherapy in high- and intermediate-risk
prostate cancer patients
Background and Purpose:
External beam radiotherapy is the primary approach for cancer treatment. This method can result in radiation-induced second cancers that mainly affect healthy tissues and organs at risk due to out-of-field doses. This study aimed to evaluate the risk of...
A collider search for dark matter through dark photons based on a phenomenological study is presented. Where simulated samples with the ATLAS detector at the CERN LHC with a center-of-mass energy of 13 TeV are used. A dark photon is a hypothetical dark matter particle which may be detected through its kinetic mixing with the general photon. In which it couples weakly to electrically charged...
Accurate determination of the solar declination angle is essential for the calculation of other solar angles that give the Sun’s position in the sky and relative to a solar photovoltaic (PV) module surface. These angles give insight into the optimal orientation of the PV for maximised energy output throughout the year. This study analyses existing approaches for calculating the solar...
Background
Ensuring precise dose distribution calculations by treatment planning systems (TPS) is crucial in brachytherapy. Accurate dose computation is essential for effective treatment planning and patient safety. This study aims to evaluate the accuracy of TPS calculations by comparing them with various analytical methods used for dose verification.
Materials and Methods
This study used...
Neutrinos, elusive and abundant particles, play a pivotal role in understanding some of the most extreme astrophysical events, including supernovae. This presentation explores the role of neutrinos in stellar evolution, with a particular focus on their importance in the mechanisms of supernova explosions. We will introduce the Hyper-Kamiokande experiment, a next-generation water Cherenkov...
Face à l'épuisement mondial des ressources naturelles en énergie fossiles, et d’origine
thermonucléaire; face aux multiples crises pétrolières, économiques, et les problèmes de
changements climatiques dus à l’effet de serre, la science s’intéresse aux ressources en
énergie renouvelables plutôt éco-responsable et durable.
la plupart des travaux de
recherche dans le domaine des énergies...
Given the continuous increase in modulated radiation therapy plans, patient-specific quality assurance became mondatory. Measurement-based patient-specific quality assurance is time-consuming and burdensome for medical physicists, particularly in busy radiotherapy centers. This study predicts and classifies gamma passing rate outcomes at the planning stage for head-and-neck volumetric...
Sci. China-Phys. Mech. Astron., 66(1): 211062 (2023)
arXiv:2411.09345 [Conceptual Design Report]
Nucl. Sci. Tech.35,148(2024)
Nucl. Sci. Tech.35,201(2024)
Nucl. Sci. Tech. 36,41(2025)
arXiv:2407.20723 [submitted to JINST]
arXiv:2401.15477 [10.1007/978-981-97-0065-3_19]
PoS ICHEP2024 (2025) 728 [DOI:10.22323/1.476.0728]
DOI:10.5281/zenodo.8373963 [LeptonPhoton2023...
Shortly after the Big Bang, the universe was in an incredibly hot and dense state, with particles moving at nearly the speed of light. During this brief period, lasting only a few microseconds, quarks and gluons were the dominant components. Due to the extremely high temperatures, these quarks and gluons—collectively known as partons—were only loosely bound and could move freely, forming a...
Introduction: Accurate prediction of radiotherapy complications is crucial for optimizing treatment planning and improving outcomes in breast cancer patients. However, modeling the risk is challenging due to intricate interactions between clinical, demographic, and dosimetric parameters. This study aimed to conduct a comprehensive comparative analysis of advanced machine learning techniques...
Space weather, defined as the variable conditions in space driven by the sun, significantly impacts
the performance of both terrestrial and space-based technologies. To mitigate these adverse effects,
it is essential to develop accurate storm-time space weather models. Since the sun is the primary
driver of these models, solar indices like SSN and F10.7 are crucial for creating these...
The structural, electronic, optical, and photocatalytic properties of pure and Ti-doped on the B-site of Cs2BI6 (B= Hf and Zr) are explored using the first principal calculation based on the Density Functional Theory (DFT). Our finding band gap values are 3.175 eV for Cs2ZrI6 and 4.153 eV for Cs2HfI6 by PBE-GGA + mBJ approximation, is closer to the experimental data. Besides, Cs2B1−xTixI6 (B =...
Authors : Kokou GNRONFOUa,c, Tchamye Tcha-Esso BOROZEa,b,c*, Essohouna TAKOUGNADIa,c
a. Department of Physics, University of Lomé, 01 B.P. 1515 Lomé – TOGO
b. Regional Center of Excellence for Electricity Management (CERME), University of Lomé, 01 B.P. 1515 Lomé – TOGO
c. Research Team on Agricultural Mechanization and Process Engineering (ERMAP), University of Lomé, 01 B.P. 1515 Lomé –...
iThemba Laboratories for Accelerator Based Sciences (LABS) is a national research facility in South Africa with its various activities centred around a number of sub-atomic particle accelerators. The largest accelerator at the facility, a K=200 separated sector cyclotron (SSC), accelerates protons of energies up to 200MeV, and heavier particles to much higher energies. With the protons beams...
Abstract:
Quantum walks (QWs) play a fundamental role in the development of quantum algorithms, making their dynamics essential for enhancing quantum computing and quantum information transport applications. In this study, we investigate the scattering properties of quantum walks on a one-dimensional line through numerical simulations in both continuous- and discrete-time frameworks....
Each year, various forms of particle physics masterclasses are offered to the world by the International Particle Physics Outreach Group. These masterclasses use authentic physics research data to enable students and their teachers to experience how physics works. African participation is rising and can go further to benefit science education and workforce development. We will provide an...
The large-scale distribution of galaxies contains crucial information about the acoustic waves that propagated in the primordial baryon-photon plasma. These waves imprint a characteristic scale into the galaxy two-point correlation function. This scale, called the "Linear Point" (LP), is defined as the mid-point between the peak and dip of the correlation function at scales of about 150...
SLOWPOKE-2 is a pool-type research reactor whose accurate modeling is challenging due to its compact core and significant neutron leakage. In this study, a detailed three-dimensional continuous-energy model of the SLOWPOKE-2 reactor was developed using the Monte Carlo code OpenMC. The model was validated through criticality calculations, showing good agreement with measured excess reactivity...
Understanding the behaviour of matter under extreme conditions remains a central challenge in high-energy nuclear physics and astrophysics. This study presents a comparative analysis of relativistic shock wave propagation in the plasma environments of heavy-ion collisions (HIC) and core-collapse supernovae (CCSNe). Using both analytical and numerical techniques, we model shock generation in...
Abstract
Inorganic scintillator materials find widespread use in ionizing radiation detectors across various fields such as nuclear physics and medical physics. Recently, there have been advancements in enhancing their optical properties through the addition of small quantities (doping) of metals, typically from the rare-earth family. The primary objective of this research is to conduct...
In this study, we examined variability of sun-related energies, auroral electrojet current, ring current, and magnetopause current during solar cycles 23 and 24. The study revealed a dependence of sun-related energies on the Sun and Earth current systems with solar activity from 1996 to 2019. A decrease in the correlation between sun-related energies and sunspot number was observed over solar...
In this paper, we observationally test the f(Q) gravity model at both background and perturbation levels using Pantheon+, Hubble measurements, and Redshift Space Distortion Data. We obtain the best-fit parameters by solving numerically the modified Friedmann equations for two distinct cosmological models of f(Q) gravity namely the Power law and Exponential models. This involves performing a...
Ce projet s’inscrit dans le cadre de l’étude du comportement hyperélastique des élastomères, avec pour objectif la caractérisation avancée de leur réponse sous des conditions de chargement multiaxial. L’approche expérimentale adoptée repose sur l’essai historique de traction-torsion développé par Rivlin et Saunders en 1951 [1], reconnu pour sa capacité à révéler les non-linéarités du...
This study aims to analyze the energy deposition distribution of lithium-7 (⁷Li) ions in a multi-cell model applied to Boron Neutron Capture Therapy (BNCT). Using Monte Carlo simulations with Geant4, we evaluate the influence of charged particle interactions at the cellular scale and their impact on BNCT dosimetry. Results show that ⁷Li ions deposit their energy primarily in the cytoplasm and...
We present an analysis that investigates the $H_0$ and $S_8$ tensions by considering a phantom dark energy model. The latter is a late-time model characterized by a future abrupt event known as the Little Rip (LR) model and characterised by one extra parameter, $\Omega_{\text{lr}}$, compared to the standard model, $\Lambda$CDM. To test this approach, we perform a statistical analysis by the...
In this paper, we propose a version of the Swampland Weak Gravity Conjecture (WGC) for higher-spin (HS) massive topological AdS₃ gravity. We demonstrate that the conjecture can be formulated in terms of mass Mhs, charge Qhs and coupling constant ghs of 3D gravity coupled to higher spin fields as Mhs≤√2 Qhs ghs MPl.
To the best of our knowledge, this question has not been explored in the...
There are currently rather few catalogues of rotational velocity of FGK type stars, based on high-resolution spectra. This paper aims to present a method for determining the rotational velocities of cool stars, for the AMBRE Project. The AMBRE main goal is to parametrize European Southern Observatory (ESO) archived high-resolution spectra, make their parameters publicly available and help in...
Abstract:
This study investigates the synthesis and characterization of ZnFe₂O₄-ZnO nanocomposite thin films, focusing on the effect of film thickness on the appearance of ZnFe₂O₄ in the composite. The films were prepared using the spray pyrolysis technique. Structural, optical, morphological, electrical, and magnetic properties of the thin films were systematically analyzed. X-ray...
Cancer induction and progression are major challenges faced by humanity [1]. Several procedures and methods have been used to detect the disease at various stages within the clinical setting [2]. However, many of these clinical tests are geared towards biochemical cues [3,4]. This study studied the inherent nanomechanical properties of breast and colorectal biopsies. The tissues were obtained...
The global decline in coal demand, driven by environmental concerns, has prompted research into alternative uses for coal. Graphite, as a high value carbon materials and similar structure to coal molecules, provide a promising route to repurpose coal. This study investigates the conversion of coal into high-purity graphite using an innovative, low-cost, metal-assisted microwave treatment...
Abstract
For diagnostic X-ray rooms to remain compliant with regulations and radiation safety guidelines, an accurate radiation dose estimation is requisite to guide the optimization of radiation safety. The spatial and energy-dependence distribution of ionizing radiation in the radiation room were characterized using Geant4 Monte Carlo-based simulations. An X-ray machine was modeled...
Chalcogen perovskites have become one of the most competitive materials in the field of environmentally friendly energy production due to their stability and non-toxicity. In this context, both stability and structural, optoelectronic, and thermoelectric properties were studied using the DFT method. We also addressed the calculation of photovoltaic parameters via the Scaps-1D simulation code....
Pour les machines industrielles dont la complexité n'a cessé d'augmenter, la compréhension et le diagnostic des phénomènes vibratoires mis en jeu nécessitent des simulations de plus en plus fines de leur comportement. L’étude de la dynamique des machines tournantes est donc plus que jamais d’actualité. Les gyroscopes présentent une dynamique très riche et sont présents dans une large gamme de...
The cement industry is facing major challenges due to dwindling clinker reserves, high CO2 emissions, and high electrical energy consumption. Partially or completely replacing clinker in cement production represents a possible solution, and the use of clays is one of the most promising options to achieve this. In the field of research, the partial replacement of clinker with calcined...
The objective of this work is to use the Casson fluid model to analyze the hemorheological characteristics in the arterial region using computer simulations of two-dimensional (2D) hemodynamics of unsteady blood flow via an inclined overlapping time-variant stenosed artery in the presence of nanoparticles. A uniform electric and magnetic field is applied to the blood flow in an axial and...
Dans un contexte de précarité énergétique persistante au Togo — où seulement 55,4 % de la population avait accès à l’électricité en 2020 [1] —, cette étude analyse les déterminants socio-économiques, comportementaux et spatiaux de la consommation électrique résidentielle à Lomé. S’appuyant sur une enquête menée en 2025 auprès de 1 094 ménages, elle mobilise une approche méthodologique mixte...
Small satellite (SmallSat) technologies have enhanced the potential and feasibility of geodesic missions, through simplification of design and decreased costs allowing for more frequent launches. These aspects are especially relevant for the development of space programs in Africa, where satellite-based Earth surveys can enhance local science, industry, and communities. SmallSat data...
The Peltier modules are used for small scale cooling and refrigeration purposes at both domestic and industrial sectors. Portable refrigerators operated by Peltier element have been constructed, and experiments are conducted on air or/and water as coolants on module efficiency using water pump or fans. In this study, experimental approach is used to evaluate the possibility to homogenize...
The Molten Salt Reactor (MSR) is one of the Generation IV reactors, utilizing liquid fuel that flows through the core and other supporting components. Due to its liquid nature, an optimal flow will distribute the reactor power evenly across all pin channels, ensuring efficient heat transfer throughout the system [2]. Therefore, an optimal design is required to ensure flow uniformity throughout...
Lithium-ion batteries (LIB) have emerged as the most representative and versatile rechargeable energy-storage system. Among the numerous anode materials used in LIBs, titanium dioxide stands out as an excellent material. However, the poor conductivity of titanium dioxide in its raw form and limited cell capacity have hindered its practical use. In this study, we investigate aluminum-doped...
The MeerKAT radio telescope in South Africa, a pathfinder for the Square Kilometre Array (SKA1-Mid), is highly sensitive and has a wide field of view, making it ideal for studying changes in the radio sky over time. This study uses MeerKAT images from three fields of the MHONGOOSE Large Survey Project (LSP) to search for new transient and variable radio sources. Each field includes 10...
Stratified epithelial tissues, such as the skin epidermis, cover the body and serve as primary barrier against external assaults and pathogens. These tissues are composed of multiple layers, with a basal stem cell layer attached to the basement membrane and suprabasal layers of differentiated cells. The fluidity of the basal layer plays a key role in maintaining the mechanical barrier between...
Solid-state systems have emerged as highly promising candidates for realizing qubits in quantum technologies. Among these systems, graphene stands out as an exceptional platform due to its remarkable electronic properties and long coherence times. This presentation focuses on investigating the quantum properties of graphene that make it particularly suitable for advancing solid-state quantum...
