Mohamed El Khaldi

ORCID: 0000-0002-1367-5408
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Particle accelerators and beam dynamics
  • Particle Accelerators and Free-Electron Lasers
  • Gyrotron and Vacuum Electronics Research
  • Superconducting Materials and Applications
  • Magnetic confinement fusion research
  • Advanced Photonic Communication Systems
  • Photonic and Optical Devices
  • Semiconductor Lasers and Optical Devices
  • Electrostatic Discharge in Electronics
  • Pulsed Power Technology Applications
  • Optical Network Technologies
  • Ionosphere and magnetosphere dynamics
  • Advanced X-ray Imaging Techniques
  • Advanced X-ray and CT Imaging
  • Radio Frequency Integrated Circuit Design
  • Antenna Design and Optimization
  • Laser-Plasma Interactions and Diagnostics
  • Microwave Engineering and Waveguides
  • Antenna Design and Analysis
  • Advanced optical system design
  • Photocathodes and Microchannel Plates
  • Plasma Diagnostics and Applications
  • UAV Applications and Optimization
  • Smart Agriculture and AI
  • Phase-change materials and chalcogenides

Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
2018-2025

University of Balamand
2024

Centre National de la Recherche Scientifique
2003-2024

Université Paris-Saclay
2024

Institut National de Physique Nucléaire et de Physique des Particules
2024

GANIL
2015-2019

Université Paris-Sud
2013

Ghent University Hospital
2012

CEA Cadarache
2008-2011

Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2008-2011

ThomX is a new generation Compact Compton Source. It currently commissioned by and at the IJCLab (Laboratoire de physique des 2 infinis - Irène Joliot-Curie (UMR9012)) Orsay. The first beam expected begining of 2021. aim to demonstrate characteristics an intense (lab-size) X-ray source based on Scattering. performances are mostly driven laser optical system which above state art stored power. Proof principle various techniques will be performed thanks versatile beamline. Firstly, this...

10.1016/j.physo.2020.100051 article EN cc-by-nc-nd Physics Open 2020-11-20
M. Jacquet Patrick Alexandre Muath Alkadi M.A. Alves Manar Amer and 95 more Loïc Amoudry Didier Auguste Jean-Luc Babigeon Ph. Balcou Michel Baltazar C. Benabderrahmane Rachid Ben El Fekih Alain Benoît P. Berteaud Marica Biagini Alexandre Blin Sébastien Bobault Marco Bonanzingamarco J. Bonenfant J. Bonis Yazid Bouanani Said Bouaziz François Bouvet Alberto Bravin C. Bruni Cyril Bruyère Harold Bzyl L. Cassinari K. Cassou Jean-Noël Cayla Thomas Chabaud Iryna Chaikovska Sophie Chancé Christophe Chapelle V. Chaumat R. Chiche Alain Cobessi E. Cormier P. Cornebise Marie-Emmanuelle Couprie Renaud Cuoq Olivier Dalifard J. Degallaix Nicolas Delerue William Del Net Antonio Diaz Yannick Dietrich Massamba Diop Remy Dorkel D. Douillet I. Drebot Jean-Phillipe Dugal Kévin Dupraz É. Dupuy Moussa El Ajjouri Noureddine El Kamchi Mohamed El Khaldi Hélène Elleaume Ezgi Ergenlik François Estève Pierre Favier Marco Fernandez Alexis Gamelin Jean-François Garaut Luca Garolfi Philippe Gauron F. Gauthier Pascal Girault Alexandre Gonnin Denis Grasset Eric Guerard H. Guler J. Haïssinski Jean‐Louis Hazemann Dias Helder Christian Herbeaux Emmanuel Herry Jean-Louis Hodeau Jean-Michel Horodynski Nicolas Hubert G. Iaquaniello Philippe Jacquet P. Jeantet Didier Jehanno Eric Jules Grigor Kapoujyan Viacheslav Kubytskyi M. Labat François Labaye Jerome Lacipière Mickaël Lacroix Eric Lahéra Marc Langlet Titouan Lebarillec Jean-François Ledu Géraldine Le Duc Damien Le Guidec Bruno Leluan P. Lepercq Alain Lestrade

10.1140/epjp/s13360-024-05186-z article EN The European Physical Journal Plus 2024-05-30
Muath Alkadi M.A. Alves Manar Amer Loïc Amoudry Didier Auguste and 95 more Jean-Luc Babigeon Michel Baltazar Alain Benoît Alexandre Blin Marco Bonanzingamarco J. Bonenfant J. Bonis J.P. Brasile K. Cassou Jean-Noël Cayla Thomas Chabaud Iryna Chaikovska Sophie Chancé V. Chaumat R. Chiche P. Cornebise Olivier Dalifard Nicolas Delerue Remy Dorkel D. Douillet I. Drebot Jean-Phillipe Dugal Kévin Dupraz Noureddine El Kamchi Mohamed El Khaldi Ezgi Ergenlik Pierre Favier Marco Fernandez Alexis Gamelin Jean-François Garaut Luca Garolfi Philippe Gauron F. Gauthier Alexandre Gonnin Denis Grasset Eric Guerard Hayg Guler J. Haïssinski Emmanuel Herry G. Iaquaniello M. Jacquet Didier Jehanno Eric Jules Viacheslav Kubytskyi François Labaye Mickaël Lacroix Marc Langlet Titouan Lebarillec Jean-François Ledu Damien Le Guidec Bruno Leluan P. Lepercq Frédéric Letellier-Cohen Rodolphe Marie Jean-Claude Marrucho A. Martens Christophe Mageur Gabriel Mercadier Bruno Mercier Eric Mistretta H. Monard Alexandre Moutardier V.V. Mytrochenko O. Neveu D. Nutarelli Maher Omeich Y. Peinaud A. Perus Yannick Petrilli Marc Pichet Bernard Pieyre E. Plaige Christophe Prévost Thomas J. Roulet R. Roux Philippe Rudnicky V. Soskov M. Taurigna-Quere Stéphane Trochet Cynthia Vallerand A. Variola Olivier Vitez François Wicek G. Wormser Sébastien Wurth F. Zomer Patrick Alexandre Rachid Ben El Fekih P. Berteaud Sébastien Bobault Yazid Bouanani François Bouvet L. Cassinari Marie-Emmanuelle Couprie Renaud Cuoq

ThomX is a compact x-ray source based on Compton scattering, installed at IJCLab (Laboratoire de physique des 2 infinis-Irène Joliot-Curie) in Orsay. The machine uses small electron storage ring and an intense laser pulse stored high-finesse optical cavity. This article describes the various subsystems of their initial results commissioning, which began mid-2021. first commissioning phase led to production <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"...

10.1103/physrevaccelbeams.28.023401 article EN cc-by Physical Review Accelerators and Beams 2025-02-07

In the framework of ion cyclotron resonance frequency heating development at CEA Cadarache, a prototype antenna based on load-resilient electrical layout foreseen for ITER has been built. This was recently tested in Tore Supra. The ITER-like scheme validated during fast perturbations edge plasma. Clear load resilience properties are reported. main conclusions and consequences learned from discussed.

10.1088/0029-5515/48/6/065007 article EN Nuclear Fusion 2008-04-25

LAL is now equiped with its own platform for photoinjectors tests and Research Developement, named PHIL (PHotoInjectors at LAL). This facility has two main purposes: push the limits of performances working on both design associated technology provide a low energy (MeV) short pulses (ps) electron beam interested users. Another very important goal this machine will be to an opportunity form accelerator physics students, in high environment. To achieve test line was realised equipped RF source,...

10.1088/1748-0221/8/01/t01001 article EN Journal of Instrumentation 2013-01-02

Tore Supra routinely addresses the physics and technology of very long-duration plasma discharges, thus bringing precious information on critical issues long pulse operation ITER. A new ITER relevant lower hybrid current drive (LHCD) launcher has allowed coupling to a power level 2.7 MW for 78 s, corresponding density close design value foreseen an LHCD system. In accordance with expectations, distance (10 cm) been obtained. Successive stationary states profile have controlled in real-time...

10.1088/0029-5515/51/9/094014 article EN Nuclear Fusion 2011-08-31

A collaboration of seven research institutes and an industry has been set up for the ThomX project, a compact Compton Backscattering Source (CBS) based in Orsay – France. After period study definition machine performance, full description all systems provided. The infrastructure work started main are call tender phase. In this paper we will illustrate definitive parameters components characteristics. We also update results different technical experimental activities on optical resonators, RF...

10.18429/jacow-ipac2014-wepro052 article EN 5th Int. Particle Accelerator Conf. (IPAC'14), Dresden, Germany, June 15-20, 2014 2014-06-15

10.1109/iaeac59436.2024.10503803 article EN 2022 IEEE 6th Advanced Information Technology, Electronic and Automation Control Conference (IAEAC ) 2024-03-15

Abstract This paper presents an optically controlled broadband phase‐shifter using a parallel‐line coupler, that takes advantage of high‐resistivity silicon photo‐absorption at 840 nm. A continuously variable phase‐shifting 120° is achieved 11 GHz with Δ| S 21 | &lt; 5 dB and −15 in large frequency band (6–15 GHz). © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 47: 570–573, 2005; Published online InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21232

10.1002/mop.21232 article EN Microwave and Optical Technology Letters 2005-10-25

Two optically controlled phase shifters are proposed. The first structure is based on the microstrip ring resonator inserted between two gaps. Phase-shifting performed by controlling gaps capacitance. has shown excellent characteristics, however rejection rate high. To minimise reflected power, second shifter, which rat race coupler, In this case, phase-shifting adding extra lengths to gaps, judiciously placed along microwave ports. act as short-circuits under sufficient illumination...

10.1049/iet-map:20060010 article EN IET Microwaves Antennas & Propagation 2007-04-02

An optically controlled phase-shifter has been designed taking benefit of high resistive silicon photo-absorption at 843 nm. Phase-shift 85/spl deg/ achieved in the frequency range 18 GHz-28 GHz under very low optical power while magnitude remains practically constant. Physical and electromagnetic modelling performed to explain microwave effects these microstrip structures.

10.1109/mwp.2003.1422895 article EN 2005-04-25

Abstract The optically controlled phase and magnitude of a coplanar transmitted wave have been investigated, taking advantage the benefit silicon photo‐absorption at 843 nm. A phase‐shift 45° has achieved 12 GHz while remains constant. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 38: 129–132, 2003; Published online in InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10993

10.1002/mop.10993 article EN Microwave and Optical Technology Letters 2003-05-29

ThomX Compton light source is designed to maximise the average X-ray flux providing a compact and tunable machine which can operate in hospitals or museums. These constraints impose choice of high collision rate based on S-band Linac whose energy 50-70 MeV combined an electron storage ring. As most performances beam at interaction point depend quality ring entrance, linear accelerator must be carefully especially photo-injector. Simulations have been carried out order optimise emittance for...

10.18429/jacow-ipac2016-wepoy024 article EN 7th International Particle Accelerator Conference (IPAC'16), Busan, Korea, May 8-13, 2016 2016-05-08

The antenna scattering (S‐matrix) or impedance matrix at location where the is connected to power system of crucial importance assess compliance with handling requirements and design tuning‐and‐matching system. electrical behaviour an Ion Cyclotron Resonance Heating (ICRH) ITER in front infinite isotropic load was assessed numerically using HFSSR TOPICA codes for comparison. calculations were performed 45 MHz, various thicknesses vacuum layer, relative permittivities ε′ dielectric medium...

10.1063/1.3273746 article EN AIP conference proceedings 2009-01-01

Photocathode RF guns are used in the first stage of electron beam generation and acceleration. The gun THOMX is a 2.5 cell standing wave copper cavity with resonance frequency 2998.55 MHz at 30 °C under vacuum. metal photocathode such as or magnesium inserted into backplane cavity. Due to high repetition rates up 50 Hz average dissipated power internal surfaces 1.5 kW, causing heating deformation shape. Therefore, cooling system device has be well designed take control deformations...

10.18429/jacow-ipac2016-thpow002 article EN 7th International Particle Accelerator Conference (IPAC'16), Busan, Korea, May 8-13, 2016 2016-05-08

We propose here to apply the technique of optical control microwave devices perform phase-shifting for microstrip phased arrays. The physical principle used is photoconductive effect which enables creation a variable load, when gap in line illuminated with an signal adequate wavelength. This applied on hybrid ring. have designed phase-shifter continuously varying phase and quasi-constant |S<sub>21</sub>|, few return losses. measurements given interesting results. A low cost small size array...

10.1117/12.628823 article EN Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE 2005-09-28

Arc detection systems are developed for ICRH on ITER to prevent arcs from damaging the RF components. One of detectors, Sub‐Harmonic Detector (SHAD) is based frequencies emitted in MHz range by [R1]. To ensure high level reliability required this safety system, it necessary demonstrate that these present a signal with Signal Noise Ratio enough be detected under wide operational conditions (frequency, power, configuration) and different types can appear feeding lines antennas (vacuum arc,...

10.1063/1.3273739 article EN AIP conference proceedings 2009-01-01

The upgraded 3.7 GHz Lower Hybrid Current Drive (LHCD) system for the Tore Supra (TS) tokamak is in process of installation [1]. When complete, it will permit long pulse injection (1000s) at coupled power level up to 6, 5 MW. Steady state operation high RF sources and components challenging requires careful validation before can be commissioned on tokamak.Results CW klystrons, improvements forming part generation circuit development an water load sustain pulses under 700 kW are presented.

10.1063/1.3273785 article EN AIP conference proceedings 2009-01-01
Coming Soon ...