Tullio Basaglia

CERN, Genève, Geneva, Switzerland

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Publications (14)10.31 Total impact

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    ABSTRACT: This paper summarizes experience and results collected by the authors in the process of developing and testing physics models related to Geant4, and discusses them in the context of establishing a common epistemology and openly available tools for the validation of the physics implemented in Monte Carlo particle transport codes. It reviews basic concepts pertinent to the validation of the physics of Monte Carlo transport systems, and discusses the interplay between software design and the test process. It illustrates some recent results in the validation of Geant4 electromagnetic physics and elucidates the methodology enabling their achievement.
    ANS MC2015 - Joint International Conference on Mathematics and Computation (M&C), Supercomputing in Nuclear Applications (SNA) and the Monte Carlo (MC) Method · Nashville, Tennessee · April 19–23, 2015, Nashville, Tennessee · April 19–23, 2015; 04/2015
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    ABSTRACT: Backscattering is a sensitive probe of the accuracy of electron scattering algorithms implemented in Monte Carlo codes. The capability of the Geant4 toolkit to describe realistically the fraction of electrons backscattered from a target volume is extensively and quantitatively evaluated in comparison with experimental data retrieved from the literature. The validation test covers the energy range between approximately 100 eV and 20 MeV, and concerns a wide set of target elements. Multiple and single electron scattering models implemented in Geant4, as well as preassembled selections of physics models distributed within Geant4, are analyzed with statistical methods. The evaluations concern Geant4 versions from 9.1 to 10.1. Significant evolutions are observed over the range of Geant4 versions, not always in the direction of better compatibility with experiment. Goodness-of-fit tests complemented by categorical analysis tests identify a configuration based on Geant4 Urban multiple scattering model in Geant4 version 9.1 and a configuration based on single Coulomb scattering in Geant4 10.0 as the physics options best reproducing experimental data above a few tens of keV. At lower energies only single scattering demonstrates some capability to reproduce data down to a few keV. Recommended preassembled physics configurations appear incapable of describing electron backscattering compatible with experiment. With the support of statistical methods, a correlation is established between the validation of Geant4-based simulation of backscattering and of energy deposition.
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    ABSTRACT: Several physics methods for the simulation of the photoelectric effect are quantitatively evaluated with respect to a large collection of experimental data retrieved from the literature. They include theoretical and empirical calculations of total and partial cross sections, and calculations of the photoelectron angular distribution. Some of these models are currently implemented in general purpose Monte Carlo systems; some have been implemented and evaluated for possible use in Monte Carlo particle transport for the first time in this study.
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    ABSTRACT: The broad coverage of the search for the Higgs boson in the mainstream media is a relative novelty for high energy physics (HEP) research, whose achievements have traditionally been limited to scholarly literature. This paper illustrates the results of a scientometric analysis of HEP computing in scientific literature, institutional media and the press, and a comparative overview of similar metrics concerning representative particle physics measurements. The picture emerging from these scientometric data documents the scientific impact and social perception of HEP computing. The results of this analysis suggest that improved communication of the scientific and social role of HEP computing would be beneficial to the high energy physics community.
    Journal of Physics Conference Series 11/2013; 513(6). DOI:10.1088/1742-6596/513/6/062039
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    ABSTRACT: An overview of the evolution of computing-oriented publications in high energy physics following the start of operation of LHC. Quantitative analyses are illustrated, which document the production of scholarly papers on computing-related topics by high energy physics experiments and core tools projects, and the citations they receive. Several scientometric indicators are analyzed to characterize the role of computing in high energy physics literature. Distinctive features of software-oriented and hardware-oriented scholarly publications are highlighted. Current patterns and trends are compared to the situation in previous generations' experiments.
    Journal of Physics Conference Series 09/2012; 396(6). DOI:10.1088/1742-6596/396/6/062015
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    ABSTRACT: A scientometric analysis of Monte Carlo simulation and Monte Carlo codes has been performed over a set of representative scholarly journals related to radiation physics. The results of this study are reported and discussed. They document and quantitatively appraise the role of Monte Carlo methods and codes in scientific research and engineering applications. Comment: 5 pages, to appear in proceedings of the Joint International Conference on Supercomputing in Nuclear Applications and Monte Carlo 2010 (SNA + MC2010)
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    ABSTRACT: A scientometric analysis has been performed on selected physics journals to estimate the presence of simulation and modeling in physics literature in the past fifty years. Correlations between the observed trends and several social and economical factors have been evaluated.
    Nuclear Science Symposium Conference Record (NSS/MIC), 2010 IEEE; 12/2010
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    ABSTRACT: This biennial Review summarizes much of particle physics. Using data from previous editions, plus 2158 new measurements from 551 papers, we list, evaluate, and average measured properties of gauge bosons, leptons, quarks, mesons, and baryons. We also summarize searches for hypothetical particles such as Higgs bosons, heavy neutrinos, and supersymmetric particles. All the particle properties and search limits are listed in Summary Tables. We also give numerous tables, figures, formulae, and reviews of topics such as the Standard Model, particle detectors, probability, and statistics. Among the 108 reviews are many that are new or heavily revised including those on neutrino mass, mixing, and oscillations, QCD, top quark, CKM quark-mixing matrix, V_(ud) & V_(us), V_(cb) & V_(ub), fragmentation functions, particle detectors for accelerator and non-accelerator physics, magnetic monopoles, cosmological parameters, and big bang cosmology. A booklet is available containing the Summary Tables and abbreviated versions of some of the other sections of this full Review. All tables, listings, and reviews (and errata) are also available on the Particle Data Group website: pdg.lbl.gov.
    Journal of Physics G Nuclear and Particle Physics 07/2010; DOI:10.1088/0954-3899/37/7A/075021 · 2.84 Impact Factor
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    ABSTRACT: The Geant4 reference paper published in Nuclear Instruments and Methods A in 2003 has become the most cited publication in the whole Nuclear Science and Technology category of Thomson-Reuter's Journal Citation Reports. It is currently the second most cited article among the publications authored by two major research institutes, CERN and INFN. An overview of Geant4 presence (and absence) in scholarly literature is presented; the patterns of Geant4 citations are quantitatively examined and discussed.
    Nuclear Science Symposium Conference Record (NSS/MIC), 2009 IEEE; 12/2009
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    ABSTRACT: A set of patterns related to the impact factor of technological journals has been analyzed, with emphasis on radiation instrumentation and medical physics publications. Attention was devoted in particular to two IEEE journals, IEEE Transactions on Nuclear Science and IEEE Transactions on Medical Imaging, representative of these categories. The results are compared to a similar survey of particle physics journals. The weight of citations coming from inside the same subject area has been evaluated with respect to the amount of citations deriving from publications in external domains. A preliminary analysis hints to a significant degree of correlation between a high impact factor of some journals and a large fraction of citations originating from the same field. The results highlight the cross-disciplinary role of technological journals.
    Nuclear Science Symposium Conference Record, 2008. NSS '08. IEEE; 11/2008
  • Physics Letters B 09/2008; DOI:10.1016/j.physletb.2008.07.018 · 6.02 Impact Factor
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    ABSTRACT: An analysis of publications related to high energy physics computing in refereed journals is presented. The distribution of papers associated to various fields of computing relevant to high energy physics is critically analyzed. The relative publication rate of software papers is evaluated in comparison to other closely related physics disciplines, such as nuclear physics, radiation protection and medical physics, and to hardware publications. The results hint to the fact that, in spite of the significant effort invested in high energy physics computing and its fundamental role in the experiments, this research area is underrepresented in scientific literature; nevertheless the analysis of citations highlights the significant impact of software publications in experimental research.
    IEEE Transactions on Nuclear Science 05/2008; DOI:10.1109/TNS.2008.919563 · 1.46 Impact Factor
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    ABSTRACT: The PDG is an international collaboration that reviews particle physics and related areas of astrophysics, and compiles/analyzes data on particle properties. The Review of Particle Physics is the most cited publication in particle physics during the last decade. It summarizes most of particle physics: New measurements plus data from previous editions are compiled and evaluated in Particle Listings and Summary Tables. Included are properties of gauge bosons, leptons, quarks, mesons, and baryons, plus searches for hypothetical particles such as Higgs bosons, heavy neutrinos, monopoles, and supersymmetric particles. There are many reviews, tables, and plots on topics such as Standard Model, particle detectors, probability, and statistics.
  • [Show abstract] [Hide abstract]
    ABSTRACT: This biennial Review summarizes much of particle physics. Using data from previous editions, plus 2158 new measurements from 551 papers, we list, evaluate, and average measured properties of gauge bosons, leptons, quarks, mesons, and baryons. We also summarize searches for hypothetical particles such as Higgs bosons, heavy neutrinos, and supersymmetric particles. All the particle properties and search limits are listed in Summary Tables. We also give numerous tables, figures, formulae, and reviews of topics such as the Standard Model, particle detectors, probability, and statistics. Among the 108 reviews are many that are new or heavily revised, including those on CKM quark-mixing matrix, V_ud & V_us, V_cb & V_ub, fragmentation functions, particle detectors for accelerator and non-accelerator physics, magnetic monopoles, cosmological parameters, and big bang cosmology. A booklet is available containing the Summary Tables and abbreviated versions of some of the other sections of this full Review. All tables, listings, and reviews (and errata) are also available on the Particle Data Group website: http://pdg.lbl.gov.