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RISS 인기검색어
- 검색키워드
- 저자 : Loesser, D. (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
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Giacomin, T.,Delhom, D.,Drevon, J.-M.,Guirao, J.,Iglesias, S.,Jourdan, T.,Loesser, D.,Maquet, P.,Ordieres, J.,Pak, S.,Proust, M.,Smith, M.,Udintsev, V.S.,Vacas, C.,Walsh, M.J.,Zhai, Y. Elsevier 2015 Fusion engineering and design Vol.98 No.-
<P><B>Abstract</B></P> <P>Due to this position close to the plasma, the port plug structure and the diagnostic first wall (DFW) contain water to allow cooling during operation and for heating during bake-out. To remove the heat coming from the plasma due to radiation and neutrons, the pressure inside these structures should be up to 44 bars. On the other hand, the dominant load expected to drive the design of these structures is of electromagnetic origin during the plasma disruption. Description of the loads acting on DFWs and generic port plug structures and the significance of the load due to the water pressure, with implications on the design and inspection, are discussed in this paper.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The ESP/ESPN regulation is applied to all equatorial and upper port-based diagnostic systems. </LI> <LI> The EPP and UPP structure provides a flexible platform for a variety of diagnostics. </LI> <LI> The EPP and UPP structure provide a support the diagnostic shielding module. </LI> </UL> </P>
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Final design of the generic upper port plug structure for ITER diagnostic systems
Pak, S.,Feder, R.,Giacomin, T.,Guirao, J.,Iglesias, S.,Josseaume, F.,Kalish, M.,Loesser, D.,Maquet, P.,Ordieres, J.,Panizo, M.,Pitcher, S.,Portales, M.,Proust, M.,Ronden, D.,Serikov, A.,Suarez, A.,Tan North-Holland ; Elsevier Science Ltd 2016 Fusion engineering and design Vol.102 No.-
The generic upper port plug (GUPP) structure in ITER is a 6m long metal box which deploys diagnostic components into the vacuum vessel. This structure is commonly used for all the diagnostic upper ports. The final design of the GUPP structure, which has successfully passed the final design review in 2013, is described here. The diagnostic port plug is cantilevered to the vacuum vessel with a heavy payload at the front, so called the diagnostic first wall (DFW) and the diagnostic shield module (DSM). Most of electromagnetic (EM) load (~80%) occurs in DFW/DSM. Therefore, the mounting design to transfer the EM load from DFW/DSM to the GUPP structure is challenging, which should also comply with thermal expansion and tolerance for assembly and manufacturing. Another key design parameter to be considered is the gap between the port plug and the vacuum vessel port. The gap should be large enough to accommodate the remote handling of the heavy port plug (max. 25t), the structural deflection due to external loads and machine assembly tolerance. At the same time, the gap should be minimized to stop the neutron streaming according to the ALARA (as low as reasonably achievable) principle. With these design constraints, the GUPP structure should also provide space for diagnostic integration as much as possible. This requirement has led to the single wall structure having the gun-drilled water channels inside the structure. Furthermore, intensive efforts have been made on the manufacturing study including material selection, manufacturing codes and French regulation related to nuclear equipment and safety. All these main design and manufacturing aspects are discussed in this paper, including requirements, interfaces, loads and structural assessment and maintenance.
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