Charbel Koumeir
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View article: PEPITES: RESULTS AND DEVELOPMENTS OF A TRANSPARENT BEAM PROFILER FOR CONVENTIONAL AND FLASH HADRONTHERAPY.
PEPITES: RESULTS AND DEVELOPMENTS OF A TRANSPARENT BEAM PROFILER FOR CONVENTIONAL AND FLASH HADRONTHERAPY. Open
View article: Oxygen Dependence on Hydrated Electron Yields: Pulsed Radiolysis Studies Using Proton Beams
Oxygen Dependence on Hydrated Electron Yields: Pulsed Radiolysis Studies Using Proton Beams Open
Understanding the yield and kinetics of the hydrated electron (e-aq) is critical for applications in both biological and chemical systems, especially in the context of innovative FLASH radiation therapy. Most studies …
View article: Studies of GAGG:Ce scintillators for space missions dedicated to Terrestrial Gamma-Ray Flashes and Gamma-Ray Bursts observation
Studies of GAGG:Ce scintillators for space missions dedicated to Terrestrial Gamma-Ray Flashes and Gamma-Ray Bursts observation Open
International audience
View article: Monte Carlo simulations of microdosimetry and radiolytic species production at long time post proton irradiation using GATE and Geant4‐DNA
Monte Carlo simulations of microdosimetry and radiolytic species production at long time post proton irradiation using GATE and Geant4‐DNA Open
Background Radiobiological effectiveness of radiation in cancer treatment can be studied at different scales (molecular till organ scale) and different time post irradiation. The production of free radicals and reactive oxygen species duri…
View article: Radiation tolerance of diamond detector : flux and fluence studies
Radiation tolerance of diamond detector : flux and fluence studies Open
International audience
View article: Prompt gamma energy integration: a new method for online-range verification in proton therapy with pulsed-beams
Prompt gamma energy integration: a new method for online-range verification in proton therapy with pulsed-beams Open
Introduction: We propose a method for prompt-gamma verification of proton range during particle therapy, called Prompt-Gamma Energy Integration (PGEI). Method: This method is based on the measurement of the total energy deposited in a set …
View article: PROTON FLASH IRRADIATION SPARES ZEBRAFISH EMBRYOS FROM RADIATION-INDUCED DNA DAMAGE AND RESULTS IN REDUCED LEVELS OF APOPTOSIS AND INFLAMMATION
PROTON FLASH IRRADIATION SPARES ZEBRAFISH EMBRYOS FROM RADIATION-INDUCED DNA DAMAGE AND RESULTS IN REDUCED LEVELS OF APOPTOSIS AND INFLAMMATION Open
View article: New experimental measurements of X-ray emissions induced by protons of several tens of MeV on elements with Z=22 to Z=79: Toward quantitative high-energy PIXE
New experimental measurements of X-ray emissions induced by protons of several tens of MeV on elements with Z=22 to Z=79: Toward quantitative high-energy PIXE Open
International audience
View article: Microdosimetry and Radiolytic Species Production at Ultra-High-Dose Rates with GATE 10.
Microdosimetry and Radiolytic Species Production at Ultra-High-Dose Rates with GATE 10. Open
International audience
View article: Methodology for small animals targeted irradiations at conventional and ultra-high dose rates 65 MeV proton beam
Methodology for small animals targeted irradiations at conventional and ultra-high dose rates 65 MeV proton beam Open
View article: Elemental analysis by XRF and HE-PIXE on silver coins from the 16th-17th centuries and on a gilded crucifix from the 12th century
Elemental analysis by XRF and HE-PIXE on silver coins from the 16th-17th centuries and on a gilded crucifix from the 12th century Open
View article: First evidence of in vivo effect of FLASH radiotherapy with helium ions in zebrafish embryos
First evidence of in vivo effect of FLASH radiotherapy with helium ions in zebrafish embryos Open
View article: Preclinical irradiations at conventional and very high dose rates (FLASH-RT) on small animals at the ARRONAX research cyclotron: repositioning, margins and field sizes
Preclinical irradiations at conventional and very high dose rates (FLASH-RT) on small animals at the ARRONAX research cyclotron: repositioning, margins and field sizes Open
View article: Design of innovative diamond detectors for beam monitoring in highly radiative environment for applications in nuclear and medical physics
Design of innovative diamond detectors for beam monitoring in highly radiative environment for applications in nuclear and medical physics Open
International audience
View article: Reduction of radiotoxicity by ultra-high dose rate protontherapy
Reduction of radiotoxicity by ultra-high dose rate protontherapy Open
View article: Upgrade of the flash beam monitoring system at ARRONAX cyclotron
Upgrade of the flash beam monitoring system at ARRONAX cyclotron Open
View article: Ultrahigh-Dose-Rate Proton Irradiation Elicits Reduced Toxicity in Zebrafish Embryos
Ultrahigh-Dose-Rate Proton Irradiation Elicits Reduced Toxicity in Zebrafish Embryos Open
View article: New experimental bremsstrahlung cross-section for light ion beams up to 60 MeV and comparison to theoretical models
New experimental bremsstrahlung cross-section for light ion beams up to 60 MeV and comparison to theoretical models Open
View article: Proton Activation Analysis of medieval lead pipes
Proton Activation Analysis of medieval lead pipes Open
View article: High energy ion beam analysis of cultural heritage objects, a study of provenance and manufacturing techniques
High energy ion beam analysis of cultural heritage objects, a study of provenance and manufacturing techniques Open
View article: Réduction de la radiotoxicité par hadronthérapie à ultra-haut débit de dose
Réduction de la radiotoxicité par hadronthérapie à ultra-haut débit de dose Open
View article: Proton Irradiations at Ultra-High Dose Rate vs. Conventional Dose Rate: Strong Impact on Hydrogen Peroxide Yield
Proton Irradiations at Ultra-High Dose Rate vs. Conventional Dose Rate: Strong Impact on Hydrogen Peroxide Yield Open
During ultra-high dose rate (UHDR) external radiation therapy, healthy tissues appear to be spared while tumor control remains the same compared to conventional dose rate. However, the understanding of radiochemical and biological mechanis…
View article: Response characterization of a new radiochromic film to ultra high dose rates for light ions beams
Response characterization of a new radiochromic film to ultra high dose rates for light ions beams Open
View article: Technical note: Proton beam dosimetry at ultra‐high dose rates (FLASH): Evaluation of GAFchromic™ (EBT3, EBT‐XD) and OrthoChromic (OC‐1) film performances
Technical note: Proton beam dosimetry at ultra‐high dose rates (FLASH): Evaluation of GAFchromic™ (EBT3, EBT‐XD) and OrthoChromic (OC‐1) film performances Open
Purpose The ARRONAX cyclotron facility offers the possibility to deliver proton beams from low to ultra‐high dose rates (UHDR). As a good control of the dosimetry is a prerequisite of UHDR experimentations, we evaluated in different condit…
View article: First Results of PEPITES, A New Transparent Profiler Based on Secondary Electrons Emission for Charged Particle Beams
First Results of PEPITES, A New Transparent Profiler Based on Secondary Electrons Emission for Charged Particle Beams Open
The PEPITES project* consists of a brand new operational prototype of an ultra-thin, radiation-resistant profiler capable of continuous operation on mid-energy (O(100 MeV)) charged particle accelerators. Secondary electron emission (SEE) i…
View article: Beam Instrumentation, Challenging Tools for Demanding Projects –– a Snapshot from the French Assigned Network
Beam Instrumentation, Challenging Tools for Demanding Projects –– a Snapshot from the French Assigned Network Open
Particle accelerators are thrusting the exploration of beam production towards several demanding territories, that is beam high intensity, high energy, short time and geometry precision or small size. Accelerators have thus more and more s…
View article: Study of Injection Line of the Cyclotrons C70XP of Arronax
Study of Injection Line of the Cyclotrons C70XP of Arronax Open
The cyclotron C70XP is an accelerator built for the production of non-conventional radionuclides for nuclear medicine, research in physics, radio-chemistry and biology. Its injection section has been designed for 4 types of ions (HH⁺, D-, …
View article: Performance of CVD diamond detectors for single ion beam-tagging applications in hadrontherapy monitoring
Performance of CVD diamond detectors for single ion beam-tagging applications in hadrontherapy monitoring Open
View article: Section efficace de production de rayons X de la couche K : qu'en est-il à haute energie ?
Section efficace de production de rayons X de la couche K : qu'en est-il à haute energie ? Open
View article: Bremsstrahlung X-rays as a non-invasive tool for ion beam monitoring
Bremsstrahlung X-rays as a non-invasive tool for ion beam monitoring Open