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Design and testing of the ITER ECRH Upper Launcher KIT - Universität des Landes Baden-Württemberg und nationales Forschungszentrum in der Helmholtz-Gemeinschaft.

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Presentation on theme: "Design and testing of the ITER ECRH Upper Launcher KIT - Universität des Landes Baden-Württemberg und nationales Forschungszentrum in der Helmholtz-Gemeinschaft."— Presentation transcript:

1 Design and testing of the ITER ECRH Upper Launcher KIT - Universität des Landes Baden-Württemberg und nationales Forschungszentrum in der Helmholtz-Gemeinschaft ITER Port-Plug Engineering Gaetano Aiello 1 | RST - Cadarache, 12 July 2010 G. Aiello

2 KIT - Universität des Landes Baden-Württemberg und nationales Forschungszentrum in der Helmholtz-Gemeinschaft Outline 2 | RST - Cadarache, 12 July 2010 G. Aiello 1.EFDA Goal Oriented Training Programme on Port Plug Engineering 2.Description of my working activities at Karlsruhe Institute of Technology (KIT) 3.Description of the working activity during my stage at CEA/Cadarache

3 KIT - Universität des Landes Baden-Württemberg und nationales Forschungszentrum in der Helmholtz-Gemeinschaft Training programme overview - Fusion training programme: ITER Port-Plug Engineering Task leader: Louis Doceul Involved associations: CEA, FZJ, HAS, KIT Objective: train early-stage engineers in several topics related to the ITER port plug structures during 3 years. - Background 3 | RST - Cadarache, 12 July 2010 G. Aiello Degree in Safety and Nuclear Technologies Engineering, 3 years (base degree) + 2 years (specialistic degree), University of Palermo.

4 KIT - Universität des Landes Baden-Württemberg und nationales Forschungszentrum in der Helmholtz-Gemeinschaft My position in the training programme Work package 3 Location: KIT, Institute for Materials Research I Start date: 1 st September 2008 Supervisor: Theo Scherer Topic: materials, manufacturing and assembly of upper port plug structures in ITER Sharing beetween the associations: CEA/Cadarache, HAS 02 May – 30 July 2010: secondment at CEA/IRFM 4 | RST - Cadarache, 12 July 2010 G. Aiello Electon Cyclotron Heating Upper Launcher (ECH UL)

5 KIT - Universität des Landes Baden-Württemberg und nationales Forschungszentrum in der Helmholtz-Gemeinschaft The ECH UL in ITER 4 Upper Launchers: length 6 m, weight 16 t Outer structure: two separate units Cantilevered structure 5 | RST - Cadarache, 12 July 2010 G. Aiello Physics mission: control of the MHD instabilities in the plasma. BSM Main frame Support flange Connection flange

6 KIT - Universität des Landes Baden-Württemberg und nationales Forschungszentrum in der Helmholtz-Gemeinschaft The ECH UL: internal overview 6 | RST - Cadarache, 12 July 2010 G. Aiello Closure plate Waveguides Internal shield Front shield Steering mirrors Focusing mirrors Quasi optical mirrors Support flange Intermediate plate Auxiliary shield Main frame – double wall area Main frame – single wall area Socket First wall panel BSM with double wall shell Main frame – BSM flange Main components Socket Closure plate Main frame: single/double wall BSM with First Wall Panel Shield blocks Millimeter wave components

7 KIT - Universität des Landes Baden-Württemberg und nationales Forschungszentrum in der Helmholtz-Gemeinschaft Involvement in the prototype testing of the ECH UL at KIT Launcher Handling Test facility (example: BSM) Experimental outgassing measurements for the structural material of the ECH UL Learning of design and simulation tools (example: CFD simulations of the cooling circuit for transmission diamond windows in the gyrotrons) 7 | RST - Cadarache, 12 July 2010 G. Aiello My working activities at KIT

8 KIT - Universität des Landes Baden-Württemberg und nationales Forschungszentrum in der Helmholtz-Gemeinschaft Prototyping and testing of the BSM Testing of thermo- hydraulic behaviour HIP prototype of BSM corner 8 | RST - Cadarache, 12 July 2010 G. Aiello Objective: identify the optimum manufacturing strategy for double wall components. 3 concepts: HIP, brazing, machining

9 KIT - Universität des Landes Baden-Württemberg und nationales Forschungszentrum in der Helmholtz-Gemeinschaft Outgassing measurements: why? Outgassing is the gas desorbed from a vacuum surface due to the temperature of the surface. Critical issue: contamination of the ITER plasma! 9 | RST - Cadarache, 12 July 2010 G. Aiello In-vessel component: 316L(N)-IG stainless steel T= °C (240°C for baking) Internal vacuum ~ Pa Outgassing limits are given in the ITER Vacuum Handbook. Experimental measurements are necessary to verify the compliance with the limits. HIPing: no outgassing data are available in literature.

10 KIT - Universität des Landes Baden-Württemberg und nationales Forschungszentrum in der Helmholtz-Gemeinschaft Outgassing measurements: setup 10 | RST - Cadarache, 12 July 2010 G. Aiello An experimental setup has been developed to investigate the partial outgassing rates q of HIPed stainless steel samples. Outgassing depends on temperature, time, surface finish…

11 KIT - Universität des Landes Baden-Württemberg und nationales Forschungszentrum in der Helmholtz-Gemeinschaft 11 | RST - Cadarache, 12 July 2010 G. Aiello CFD simulations for diamond windows in the gyrotrons Transmission diamond windows are necessary to keep the vacuum in the gyrotrons and also act as tritium barriers. The silicon oil DC200(R)5cSt has been investigated as alternative coolant with respect to water for the window assembly.

12 KIT - Universität des Landes Baden-Württemberg und nationales Forschungszentrum in der Helmholtz-Gemeinschaft 12 | RST - Cadarache, 12 July 2010 G. Aiello My working activity at CEA/Cadarache Study of the Equatorial Port Plug 1 (EPP 1) Monte Carlo transport code MCNP (already studied at University of Palermo) EPP 1 catia model for neutronic purposes

13 KIT - Universität des Landes Baden-Württemberg und nationales Forschungszentrum in der Helmholtz-Gemeinschaft The Diagnostic Equatorial Port Plug 1 in ITER 13 | RST - Cadarache, 12 July 2010 G. Aiello Objective: create a simplified EPP 1 Catia model in order to enable neutronic analysis. Interface programs are able to convert CAD (Catia) geometry data into a suitable model for the Monte Carlo transport code MCNP.

14 KIT - Universität des Landes Baden-Württemberg und nationales Forschungszentrum in der Helmholtz-Gemeinschaft Neutronic catia model 14 | RST - Cadarache, 12 July 2010 G. Aiello Flexibility: different configurations for neutronic analysis by managing the skeleton.

15 KIT - Universität des Landes Baden-Württemberg und nationales Forschungszentrum in der Helmholtz-Gemeinschaft Conclusions 15 | RST - Cadarache, 12 July 2010 G. Aiello Gained experience in vacuum technology and manufacturing methods Gained skills in design and simulation tools (improvement of my Catia knowledge at CEA/IRFM) Many thanks to CEA/IRFM people for the kind welcome!


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