2011 IEEEINPSS 24th Symposium on Fusion Engineering SPI-31 Progress on the integration of ITER diagnostics equatorial port plugs in Europe S. Salasca, B. Cantone, M. Dapena*, M. Joanny, MH. Aumeunier, J. Travere Institute for Magnetic Fusion Research French Alterative Energies and Atomic Energy Commission F-13108 Saint-Paul-lez-Durance, France sophe.salasca@cea.fr *ow i Nle S a En Dision l1 O., 13115 S-Paul-lez-Dce, Fr B. Esposito, F. Moro, D. Marocco, R. Villari, G. Brolatti Associazione Euratom-ENEA sulla Fusione 1-00044 Frascati (Roma), Italy E. Rincon Centro de Investigaciones Energeticas, MedioAmbientales y Technologicas 28040 Madrid, Spain Abstract- Diagnostics in ITER are supported by big structures called port plugs, the second main function of which is to ensure a sufcient shielding against neutrons and gammas. Regarding the integration of diagnostics in equatorial port plugs, a new approach is under study, which consists in installing the diagnostics in "drawers". This paper describes the recent work which has been performed in Europe on the integration of diagnostics in drawers in the Equatorial Port Plug 1 (EPPl). First the methodology which has been followed to progress on the integration of the diagnostics in this port plug is described and the resulting arrangement of diagnostics is shown. Then a special attention is paid to the integration of the two main diagnostics of EPPl, namely the visible/infrared wide angle viewing system and the radial neutron camera. Finally the preliminary design of the drawers of EPPl, in particular the shielding modules around the diagnostics, is presented, and the preliminary results of the analyses performed to validate this design are provided. Keword- ITER; por plugs; diagnostics; integration; shield modules I. INTRODUCTION Diagnostics in ITER are supported by big structures called port plugs, the second main fnction of which is to ensure a sufcient shielding against neutrons and gammas, in order to limit the nuclear loads in crucial components (such as diagnostics and coils) as well as the dose levels in the controlled zones of the tokamak. Regarding the integration of diagnostics in equatorial port plugs, a new approach is under study, which consists in installing the diagnostics in "drawers". 978-1-4577-0668-4/11/$26.00 ©2011 IEEE P. Varela Instituto de Plasmas e Fusao Nuclear EURATOM/1ST Association, 1ST, UTL 1049-001 Lisboa, Portugal D. Nagy, J. Nemeth KFKI-RMKI H-1525 Budapest, Hungary C. Zeile Institute for Neutron Physics and Reactor Techology Karlsruhe Institute of Technology D-76344 Eggenstein-Leopoldshafen, Germany G. Perrollaz AMETRA 13770 Venelles, France The latter would be inserted, once flled with diagnostics and shielding blocks, inside the port plug structure through guiding rails. This paper describes the recent work which has been performed in Europe by a consortium of fve European institutes on the integration of diagnostics in drawers in the Equatorial Port Plug 1 (EPPl). This port plug appears as a relevant test bench for such integration work since it is one of the most crowded port plugs with ten diagnostics to be provided by four Domestic Agencies (DA), which induces non negligible interface issues. Section II describes the methodology which has been followed to progress on the integration of diagnostics : collection of integration requirements, clarifcation of fexibility of positioning, analysis of the consistency with oter diagnostics, etc. It then shows the resulting integration of diagnostics in EPPl, emphasizing the difculties encountered as well as the remaining issues. The two following sections are devoted to the integration of the two main diagnostics of EPPl, respectively the Equatorial VISiblelInfaRed Wide Angle Viewing System (Eq VISIIR WAVS or WAVS) and the Radial Neutron Camera (RNC), both developed in Europe. The last section presents the preliminary design of the EPPI drawers, specifcally the design of the shielding blocks surrounding the diagnostics, and also provides the preliminay results of the neutronic analyses which have been initiated to validate the design of these dawers.