Progress of Design and Development for the ITER Radial Neutron Camera

• Published in: Journal of fusion energy Vol. 41; no. 2; p. 22
• Main Authors: Esposito, B., Marocco, D., Gandolfo, G., Belli, F., Bertalot, L., Blocki, J., Bocian, D., Brolatti, G., Cecconello, M., Centioli, C., Pereira, R. C., Conroy, S., Crescenzi, F., Cruz, N., de Bilbao, L., Domenicone, A., Ducasse, Q., Di Mambro, G., Dongiovanni, D., Eletxigerra, I., Etxeita, B., Fernandez, A., Ficker, O., Gallina, P., Giacomin, T., Ginoulhiac, G., Godlewski, J., Hjalmarsson, A., Imrisek, M., Kantor, R., Kasprzak, K., Kotula, J., Krasilnikov, V., Lewandowska, M., Maffucci, A., Marotta, U., Marzullo, D., Mazzitelli, G., Mazzone, G., Miklaszewski, R., Mikszuta-Michalik, K., Maciocha, W., Magagnino, S., Misano, M., Mlynar, J., Monti, C., Moro, F., Ortwein, R., Passeri, M., Pinna, T., Pirovano, E., Pisciotta, V., Pompili, F., Podda, S., Riva, M., Santos, B., Sousa, J., Swierblewski, J., Szklarz, P., Tatí, A., Ventre, S., Villone, F., Virgili, N., Zimbal, A.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.12.2022; Springer; Springer Nature B.V
• Subjects: Analysis; Cameras; DEMO and IFMIF-DONES; Electromagnetic compatibility; Emissivity; Energy Systems; High temperature; ITER; Neutron camera; Neutron counters; Neutron detector; Neutron diagnostics development for fusion devices; Neutron flux; Neutrons; Nuclear Energy; Nuclear Fusion; Original Research; Physics; Physics and Astronomy; Plasma; Plasma Physics; Prototyping; Radiation; Reconstruction; Sensors; Subsystems; Sustainable Development; Time measurement; Tomography; Two dimensional analysis; Neutron detector; Tomography; ITER; Neutron camera
• ISSN: 0164-0313; 1572-9591; 1572-9591
• DOI: 10.1007/s10894-022-00333-9

The paper presents an overview of the design status of the Radial Neutron Camera (RNC), that, together with the Vertical Neutron Camera, will provide, through reconstruction techniques applied to the measured line-integrated neutron fluxes, the time resolved measurement of the ITER neutron and α-source profile (i.e. neutron emissivity, neutrons emitted per unit time and volume). The RNC is composed of two subsystems, the In-Port RNC and Ex-Port RNC located, respectively, inside and outside the Plug of Equatorial Port #01. The In-Port subsystem is in a more advanced design stage since it has recently undergone the Final Design Review in the ITER procurement process. The paper describes the diagnostic layout, the interfaces, the measurement capabilities and the main challenges in its realization. Prototyping and testing of neutron detectors and electronics components were carried out and led to the choice of the component solutions that can match the environmental and operational constraints in terms radiation hardness, high temperature and electromagnetic compatibility. The performance of the RNC in terms of neutron emissivity measurement capability was assessed through 1D and 2D reconstruction analysis. It is proven that the neutron emissivity can be reconstructed in real-time within the measurement requirements: 10% accuracy, 10 ms time resolution and a/10 (a = plasma minor radius) space resolution.