Development of the plasma facing components for the dome-liner component of the ITER divertor |
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| Affiliation: | 1. EFET/Ansaldo Ricerche s.p.a., C.so Perrone 25, 16152 Genova, Italy;2. FN s.p.a., ss 35 bis dei Giovi km 15, 15062 Bosco Marengo (AL), Italy;3. EFDA, Boltzmanstr. 2, 85748 Garching, Germany;4. EFET/SENER, Av.da Zugazarte 56, 48930 Las Arenas, Spain;1. Aragon Institute of Engineering Research (I3A), Universidad Zaragoza, Mariano Esquillor, s/n, Ed. “I+D”, E50.018 Zaragoza, Spain;2. Department of Engineering and Materials Science, E.T.S. de Ingenieros, Universidad de Sevilla, Spain;1. Project Manager, FLABEG FE GmbH, Im Zollhafen 18, 50678 Cologne, Germany;2. FLABEG FE GmbH, Im Zollhafen 18, 50678 Cologne, Germany;1. ITER Organization, Route de Vinon-sur-Verdon—CS 90046, 13067 St Paul-lez-Durance, France;2. Assystem Engineering & Operation Services, rue J-M Jacquard CS 60117, 84120 Pertuis, France;1. Laboratory for Alternative Energy Conversion (LAEC), School of Mechatronic Systems Engineering, Simon Fraser University, Surrey, BC V3T 0A3, Canada;2. Institute for Integrated Energy Systems (IESVic) & Energy Systems and Transport Phenomena Lab (ESTP), Department of Mechanical Engineering, University of Victoria, Victoria, BC V8W 3P6, Canada;3. Department of Chemical and Biological Engineering, University of British Columbia, 2360 East Mall, Vancouver, BC V6T 1Z3, Canada;4. Vancouver International CleanTech Research Institute Inc., 4475 Wayburne Dr. Suite 310, Burnaby, BC V5G 4X4, Canada;5. Department of Material Science and Engineering, Southern University of Science and Technology of China (SUSTech), 1088 Xueyuan Ave, Nanshan Qu, Shenzhen Shi, Guangdong Sheng 518055, China;1. The Department of Mechanical Engineering, Imperial College London, London SW7 2AZ, UK;2. EURATOM/CCFE, Culham Science Centre, Abingdon, Oxfordshire OX14 3DB, UK |
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| Abstract: | On the basis of the design and the specification of the dome-liner elaborated by EFDA, a manufacturing route based on high temperature brazing has been developed and proved by means of the fabrication and testing of several samples and mock-ups. The dome is protected with tungsten armour tiles joined onto heat sinks obtained from a bimetallic plate made of precipitation hardened copper–chromium–zirconium alloy and stainless steel realized by explosion bonding. The brazed joint between the tungsten tiles and the heat sink has been qualified by means of thermal fatigue tests on small-scale mock-ups in reactor relevant conditions. The properties of the explosion bonding joint between the front copper alloy plate to the rear steel backing has been assessed by means of an extensive metallurgical and mechanical test program according to the specification provided by EFDA. The dimensional stability during the fabrication route has been investigated by means of the realization of a relevant curved component that has been dimensionally tested after the completion of each step of the manufacturing route. The results of the experimental activity are presented and discussed in this paper. |
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