Enhancing Performances of High Power Radio-Frequency Systems in Magnetic Confinement Fusion Devices
Julien HILLAIRET
Jeudi 27/05/2021, 10h00-12h30
Salle René GRAVIER 506 rdc, CEA Cadarache

Avis de Soutenance

Monsieur Julien HILLAIRET

Présentera oralement ses travaux sur le sujet :

Enhancing Performances of High Power Radio-Frequency Systems in Magnetic Confinement Fusion Devices

Le jeudi 27 mai 2021 à 10h

Lieu: Salle René Gravier, IRFM, CEA Cadarache, Bât. 506

(information de connexion par Skype ci-dessous)

En vue de l’obtention du diplôme d’Habilitation à Diriger des Recherches de l’Université d’Aix-Marseille

Devant le jury composé de :

  • Dr. Jeff ONGENA, Plasma Physics Laboratory, ERM-KMS, Brussels, Belgium (Rapporteur)
  • Pr. Olivier PASCAL, Laboratoire plasma et conversion d'énergie, Université Toulouse 3 (Rapporteur)
  • Pr. Stéphane HEURAUX, Institut Jean Lamour, Université de Lorraine (Rapporteur)
  • Pr. Stefan ENOCH Stefan, Institut Fresnel, Faculté des Sciences de Saint Jérôme, Marseille
  • Dr. Alain BECOULET, ITER Organization, St. Paul-lez-Durance
  • Dr. Jérôme SOKOLOFF, Laboratoire plasma et conversion d'énergie, Université Toulouse 3
  • Dr. Tuong HOANG, CEA Cadarache, St. Paul-lez-Durance
  • Dr. Jean JACQUINOT, CEA Cadarache, St. Paul-lez-Durance(Invité)

Résumé :

This work concerns the high-power Radio-Frequency Heating and Current Drive modelling and Research and Development for magnetic confinement fusion devices. After introducing important concepts in magnetic fusion, we will focus on Ion Cyclotron Resonance Heating and Lower Hybrid Current Drive systems. We will describe the modelling of the coupling into the plasma of electromagnetic waves in a mega-watt range of power by antennas located near the plasma periphery, from tens of MHz to hundreds of GHz, illustrated with experimental comparisons from Tore Supra and WEST experiments. Bringing high RF power in the harsh tokamak environment leads to many issues and specific developments. We will summarize the R&D work performed on both ICRH and LHCD systems for the WEST and ITER devices, from design to high-power tests, including a discussion on RF breakdowns induced by the multipactor phenomenon. We will suggest key directions and perspectives for future RF systems. Because it matters to the author, we will finish by describing parallel teaching and outreaching activities performed at CEA/IRFM on the topic of Fusion Education and open-source software developments.

 

 

Contact : LA216364