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Michele Renda

Publications and source records attributed to Michele Renda.

6 recordsLinked to original sources

An Interoperable Syntax for Gas Scattering Reaction Definition

We propose a unified, human-readable, machine-processable novel syntax/notation designed to comprehensively describe reactions, molecules and excitation states. Our notation resolves inconsistencies in existing data representations and facilitates seamless integration with computational tools. We define a structured syntax for molecular species, excitation states, and reaction mechanisms, ensuring compatibility with a wide range of scientific applications. We provide a reference implementation based on Parsing Expression Grammar syntax, enabling automated parsing and interpretation of the proposed notation. This work is available as an open-source project, enabling validation and fostering its adoption and further improvement by the scientific community. Our standardized framework provides gas scattering models with increased interoperability and accuracy.

physics.comp-ph

A new advance on dimensional-aware scalar, vector and matrix operations in C++

We review the dimensional check problem of the high-level programming languages, discuss the existing solutions, and come up with a new solution suited for scientific and engineering computations. Then, we introduce Univec, our C++ library designed to make scalar, vector, and matrix operations using units of measurement. Moreover, Univec supports dimensional-aware operations for complex numbers, quaternions, octonions, and sedenions. We provide tables of the relevant functions and operators implemented. Our library was compared with several existing solutions, and the results are shown in the performance section. Finally, we present our future plans for improving the current implementation.

physics.comp-ph

Effects of gas temperature on Monte-Carlo simulations of charged particles drift in gaseous medium

We present the derivation of kinetic formulas modeling the microscopic interaction of a charged particle withing a molecular gas under effect of thermal motion. Both elastic and inelastic processes are taken in account. The results were verified to reproduce the non-thermal formulas when the target molecule velocity is set to zero. A set of simulation is provided to highlight the effects in Argon and Carbon tetrafluoride. Our results can applied in Monte-Carlo simulation of particle drift at energies of the same order of the thermal kinetic energy of the buffer gas.

physics.plasm-ph

Betaboltz: a Monte-Carlo simulation tool for gas scattering processes

We present an open-source code for the simulation of electron and ion transport for user-defined gas mixtures with static uniform electric and magnetic fields. The program provides microscopic interaction simulation and is interfaced with cross-section tables published by LXCat[1]. The framework was validated against drift velocity tables available in literature obtaining an acceptable match for atomic and non-polar molecular gases with spherical symmetry. The code is written in C++17 and is available as a shared library for easy integration into other simulation applications.

physics.comp-ph

megas: development and validation of a new simulation tool for the Micromegas detectors

We present megas, a new software tool that improves the simulation of the Micromegas gas detectors. Our tool offers the possibility to configure multiple arrangements with one or more layers of MM detectors. A series of simple commands can easily modify the constructive properties of each of these detectors, such as dimensions, gas composition, and electric field. megas is based on Betaboltz, an open-source library that simulates the step by step movement of electrons in an electric field using Monte-Carlo methods. A real-life example was simulated, and to validate our application, we perform a detailed analysis of our data compared with the actual experimental results. We present a selection of data obtained simulating real user-case scenarios, compared with results available in the literature, especially in the upgrade phase of the Muon Spectrometer of the ATLAS detector at LHC.

physics.ins-det

A sceptical analysis of Quantized Inertia

We perform an analysis of the derivation of Quantized Inertia (QI) theory, formerly known with the acronym MiHsC, as presented by McCulloch (2007, 2013). Two major flaws were found in the original derivation. We derive a discrete black-body radiation spectrum, deriving a different formulation for $F(a)$ than the one presented in the original theory. We present a numerical result of the new solution which is compared against the original prediction.

physics.gen-ph