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CONTENTS

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  1. CONTENTS ○ Overview of my training program ○ Focus on one previous work ○ Description of my work at IRFM

  2. Training program overview • EFDA Goal Oriented Training Program on Port Plug Engineering • Objective: • Train early-stage engineers in several topics related to the ITER port plug structures • Duration : • 3 years (30% of worktime at partner institutes) • Involved institutes : • CEA (coordinator), FZJ, KIT, HAS (home institute) • Task coordinator: • Louis DOCEUL

  3. Work package overview • Work package 5: Thermo mechanical engineering of in-vessel components • Objective : • to become a thermo mechanical analyst expert for the further fusion research • Duration: • 06.07.2009. – 07.2012. (secondment at CEA-IRFM: 03. Oct. 2010. – 29. Jan. 2011.) • Foreseen secondment: 2011 KIT, 2012 FZJ • Tools : • ANSYS Multiphysics and ANSYS Workbench • Supervisor: • Gábor GRUNDA • Sophie SALASCA (CEA secondment)

  4. CONTENTS ○ Overview of my training program ○ Focus on one previous work ○ Description of my work at IRFM

  5. Previous works ITER AEU frame structure structural analysis MAST BES diagnostic thermal analysis ITER CXRS shutter actuator thermal analysis ITER EQPP #1 thermo mechanical analysis

  6. ITER CXRS shutter actuator Description of the task CXRS port plug ITER cryostat EFDA taskunder the direction of FZJ Shutter Main aims: - temperature field of shutter actuator - necessity of additional cooling - optimal wall thickness of bellows

  7. ITER CXRS shutter actuator Description of the appliance pneumatic structure main parts are two bellows inside each other axial shift is controlled by the gas pressure two plates are fixed to the base two internal plates are pushed by the actuator Loads and boundary conditions internal heat generation constrained temperatures temperature dependant convection radiation Temperatures Convection Radiation

  8. ITER CXRS shutter actuator Results max. temperature 187 [C°] permissible temperature 300 [C°] no critical regions

  9. ITER CXRS shutter actuator Conclusion additional cooling is not necessary temperature differences are not significant all the wall thicknesses can be adequate Wall thickness 0,3[mm]

  10. CONTENTS ○ Overview of my training program ○ Focus on one previous work ○ Description of my work at IRFM

  11. New design of diagnostic port plugs F4E Grant 024 new design concept of diagnostic port plugs horizontal drawers diagnostic systems into the drawers Drawers

  12. Description of Vis/IR diagnostic 4 equatorial ports visible and infrared range 2 tangential and 1 divertor view GCECFP group – optical engineers neutronic calculations line of sights mirrors

  13. Further developments Distance between the first wall and pupil to integrate the shutter The mirrors are located in three areas Combined mirror holders Shielding blocks – 70% steel, 30% water Mirror holders Shielding blocks

  14. Conclusions ○ Gained experience in thermo mechanics and simulation tools (Ansys) ○ Gained skills in optical design and improvement of my 3D modeling knowledge (Catia) Many thanks to the CEA for the kind welcome!