Status of the Final Design of the EC UPP Launcher
| Autor: | Gaetano Aiello, René Chavan, Peter Spaeh, Mario Gagliardi, Sabine Schreck, Cock J.M. Heemskerk, Theo Scherer, Andreas Meier, B. Weinhorst, Alessandro Vaccaro, Giovanni Grossetti, J.-D. Landis, Dennis Ronden, J. Pacheco, Dirk Strauss |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Tokamak Mechanical Engineering Nuclear engineering Cyclotron Plasma Blanket 01 natural sciences 010305 fluids & plasmas law.invention Nuclear Energy and Engineering law 0103 physical sciences Electromagnetic shielding Water cooling General Materials Science 010306 general physics Waveguide Microwave Civil and Structural Engineering |
| Zdroj: | Fusion Engineering and Design, 136, 1058-1062 |
| DOI: | 10.1016/j.fusengdes.2018.04.068 |
| Popis: | Four EC H&CD (Electron Cyclotron Heating and Current Drive) launchers will be installed into the upper ports #12, #13, #15 and #16 in ITER. Beside plasma heating their main purpose is to counteract plasma instabilities by injecting up to 20 MW of microwave power at a frequency of 170 GHz at dedicated positions into the plasma. The microwave power is generated in 24 Gyrotrons outside the Tokamak and transmitted into the dedicated ports by 8 waveguide lines per launcher. After passing a CVD (Chemical Vapor Deposition) diamond window and another section of circular waveguides, the microwaves are quasi-optically guided into the plasma by an adjusted set of mirrors. These mirrors and also the foremost segments of the waveguides are mounted into the Upper Port Plug, which is a massive steel structure capable to dissipate up to 800 kW heat and to withstand heavy mechanical loads induced mainly from plasma disruptions. This paper presents the most recent status of the design of the EC H&CD Upper Port Plug (UPP), featuring the construction of the supporting structure and the BSM (Blanket Shield Module) with its plasma facing First Wall, the PHTS (Primary Heat Transfer System) water cooling layout, the shielding components engineering, the microwave system integration and comprehensive manufacturing strategies. Also correlated computational analyses to prove the final design of the launcheŕs structural system are given. |
| Databáze: | OpenAIRE |
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