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Interaction et Transport de Faisceaux Intenses dans les Plasmas
(Interaction and Transport of Intense Beams in Plasmas)

Group Leader: Brigitte CROS
Last update : 13/02/2017


Fundamental objectives and applications

Research Topics


PhD Thesis prepared in the ITFIP group

Organization of events



Fundamental objectives and applications

  • The ITFIP team activity covers fundamental and exploratory research, making use of large scale facilities, to perform experimental and theoretical studies of laser-plasma interaction in the strong field regime, and of laser propagation and guiding at ultra-high intensity in plasma media.
  •  The main applications domains are the acceleration of particles to ultra-relativistic energy in under-dense plasmas, the development of new coherent, soft X-ray sources created by short pulse laser and inertial fusion.

Research topics


The ITFIP is actively pursuing modelling and experimental studies of electron acceleration driven by laser wakefield in plasmas.  Several key issues for the development of future accelerators are being studied, such as intense laser guiding inside waveguides, the design of new plasma cells,   physical mechanisms for trapping and accelerating electrons in a plasma wave for multi-stage laser plasma accelerators. This work is undertaken in the frame of the electron acceleration scientific programme of  the CILEX project, and contributes to the design of the equipment that will be implemented in the long focal length area of  CILEX. The ITFIP team is involved in the coordination of working groups of the European projects  EUPRAXIA (design study) and ARIES. The ITFIP team uses and contributes to the development of the numerical codes WAKE and WARP. Experiments are performed using French (UHI100) and European  (LLC, Lund Sweden) laser facilities. The ITFIP  team also develops tools for numerical modelling of coherent XUV radiation sources in dense rare gases, in support to experiments performed at the Salle-jaune laser facility of LOA. 



European Plasma Research Accelerator with eXcellence In Applications (EuPRAXIA) project

 The ITFIP group  is strongly involved in the EuPRAXIA project. In addition to contribute to the definition of common parameters and the layout of the facility through simulations, the LPGP will coordinate the design of high-gradient laser plasma accelerator structures.

  The studies undertaken by the ITFIP group are in the frame of several projects and collaboration networks at different levels (regional, national and international), supported by the French National Research Agency (ANR: projects equipex CILEX, ROLEX, ELAHI and COCKER), the RTRA « Triangle de la Physique » (projects APPEAL, ELISA, MULTIPLACCELE) and the European Commission (project EuroLEAP, 2006-2009 and programme « Keep-in-touch » Euratom-CEA on inertial fusion, 2004-2008). The expertise of the group and its scientific production (76 publications in international reviews for 2008-2013) are internationally recognised and ITFIP members have a leading role in these projects especially concerning:

  • The guiding of ultra-high laser intensity in order to create large volumes of plasma with controlled properties, used as X-UV amplifying medium or for electron acceleration,
  • The study of warm dense matter during the interaction with ion beams,
  • The fast-ignition of inertial fusion target.

PhD Thesis  prepared in the ITFIP group

  • Thomas Audet: Développement d'un injecteur pour l'accélération laser plasma multi-étages (10 november 2016)
  • Frédéric Desforges: Injection induite par ionisation pour l'accélération laser-plasma dans des tubes capillaires diélectriques (July 10, 2015)

  • Jean-Sébastien Macé: Modélisation du fonctionnement d’un gyrolaser He-Ne de très haute précision (July 21,2014)

  •  Jinchuan Ju: Electron acceleration and betatron radiation driven by laser wakefield inside dielectric capillary tubes (June 27, 2013)

  • Amar Boudaa: Optimisation of XUV sources generated by the interaction of a sub-picosecond laser and a rare gas (November 25, 2010)
  • Bruno Robillart: Modelling of atomic physics and radiative transfer for XUV lasers (October 29, 2010)
  • Franck Wojda: Measurement of the amplitude of a plasma wave created by guided laser wakefield  (May 6, 2010)
  • Daniel Zimmer (co-supervision with GSI): A new double laser pulse pumping scheme for transient collisionally excited plasma soft x-ray laser (july 6,  2010)
  • Jamil Habib: Study and development of a high repetition rate XUV laser for the LASERIX facility. Application to radiobiology (december 21, 2009)
  • Kamel Bennadji: Effects of local field corrections on hydrodynamic and transport properties of correlated plasmas (May 28,  2009)
  • Romain Popoff: Multiple diffusion multiple and slowing down of a low speed ion in fusion plasma (December 18, 2008)
  • Flavien Lambert (co-supervision with CEA-DAM): Approche sans orbitale des plasmas chauds et denses (July 6, 2007)
  • David Patin : Stochastic Heating in laser-plasma interaction at very high flux ( March 15, 2006)
  • Antoine Bret :  Ralentissement d'agrégats chargés et de charges non ponctuelles dans la matière dense et chaude (1994)

Organization of events

  • Journées Accélérateurs 2017 ,  4 -6 October 2017 in Roscoff
  • Advanced an Novel Accelerators for High Energy Physics Roadmap workshop 2017, ANAR2017,  25-28 April 2017 at CERN
  • European Conference on Laser Interaction with Matter: ECLIM2014, September 2014 in Paris.
  • Journées Accélérateurs de la SFP in  Roscoff in 2009, 2011 et 201", meeting of the French accelerator community every two year.
  • «International Workshop on High Energy Electron Acceleration Using Plasma»  June 2005 in Paris (
  • «16th International Symposium on Heavy Ion Inertial Fusion » which brought together over 80 international experts to St.Malô in July 2006 (


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