DFW Design for integration of Equatorial Port Plug #8 and #17

In ITER, many diagnostics are inserted through port plug to diagnose the plasma temperature, density, radiative properties, first-wall resilience, etc. The diagnostic instruments and components are sensitive to high heat load, neutron damage, coating by dust and metallic vapour deposition, etc. On each port a DFW is installed to protect diagnostic instrumentation and components. The DFW is an assembly of FW and shielding elements that attaches to the diagnostic port plug. The scope of this activity is to develop customized design configurations of six DFWs belonging to the EQ#8 and EQ#17 port plug (EDFW). These elements consist of a plasma-facing first wall element and a shielding block portion which is attached and replaceable from a supporting DSM. The work comprises integration and design of the cooling scheme compatible with the techniques and methods assessed for the generic component, the analyses required for assessing the design feasibility (thermal-hydraulics) and those required for justifying the Structural Integrity of the customized DFWs. References regarding technical spec IDM 3PXW5J • DDD Diag DFW (EDFW for FDR) (ITER_D_LWBPC8 v1.1) • System Load Specification of EDFW (ITER_D_2ABEPK v1.0) • EDFW Structural integrity report (ITER_D_2ABH2M v1.1) • DFW-DSM-PP_Structure_Interface_Load_Transfer_ (ITER_D_Q45MZX v1.0) • DFW coolant line stress at DSM supports (ITER_D_QC7TNL v1.0)` Link: https://user.iter.org/FileSharing/?uid=0ba5a0e1-b289-4b13-9290-1b0f5b14e317

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