ITER’s (International Thermonuclear Experimental Reactor) Radial Neutron Camera (RNC), together with the Vertical Neutron Camera, aims to provide, through reconstruction techniques applied to integrated neutron fluxes, the time-resolved measurement of neutron flux profile generated during the fusion plasma production process. Specifically, neutron emissivity should be measured by the RNC, i.e. the neutrons emitted per unit time and volume. The RNC consists of two subsystems, the RNC In-Port and the RNC Ex-Port, located inside and outside the Equatorial Gate Plug #01, respectively. This report presents and discusses the studies performed and results obtained for the design of the ITER RNC focusing on an optical system for the calibration of photomultiplier neutron detectors. The latter will be installed in the Ex-Port part for time-resolved measurement of neutron flux. These activities were carried out within the framework of a collaboration agreement between the ENEA NUCTECFIS-DIM and NUC-FUSEN-DIA laboratories on the topic: “Sviluppo di una diagnostica ottica per ITER Radial Neutron Camera” (“Development of an optical diagnostics for ITER Radial Neutron Camera”) which is part of the F4E (Fusion for Energy) activities assigned to ENEA (grant SG07).
La Radial Neutron Camera (RNC) di ITER (International Thermonuclear Experimental Reactor), insieme alla Vertical Neutron Camera, ha come obiettivo quello di fornire, attraverso tecniche di ricostruzione applicate ai flussi di neutroni integrati, la misura risolta nel tempo del profilo del flusso neutronico generato durante il processo di produzione del plasma fusionistico. Più esattamente, con l’RNC si vuole valutare l’emissività neutronica, ovvero i neutroni emessi per unità di tempo e di volume. L’RNC è composto da due sottosistemi: l’RNC In-Port e l’RNC Ex-Port situati, rispettivamente, all’interno e all’esterno del Plug della Porta Equatoriale #01. In questo rapporto si presentano e discutono gli studi effettuati e i risultati ottenuti per la progettazione della ITER RNC focalizzandosi su un sistema ottico per la calibrazione di rivelatori neutronici a fotomoltiplicatore. Questi saranno infatti installati nella parte Ex-Port per la misura risolta nel tempo del flusso neutronico. Tali attività sono state effettuate nell’ambito di un accordo di collaborazione tra i laboratori ENEA NUC-TECFISDIM e NUC-FUSEN-DIA sul tema: “Sviluppo di una diagnostica ottica per ITER Radial Neutron Camera” che rientra nell’ambito delle attività di F4E (Fusione for Energy) assegnate ad ENEA (grant SG07).
Analysis and preliminary tests of optical system for calibration of photomultiplier neutron detectors of ITER Radial Neutron Camera
Francucci, M.;Ferri De Collibus, M.;Angelini, F.;Belli, F.;
2025-01-01
Abstract
ITER’s (International Thermonuclear Experimental Reactor) Radial Neutron Camera (RNC), together with the Vertical Neutron Camera, aims to provide, through reconstruction techniques applied to integrated neutron fluxes, the time-resolved measurement of neutron flux profile generated during the fusion plasma production process. Specifically, neutron emissivity should be measured by the RNC, i.e. the neutrons emitted per unit time and volume. The RNC consists of two subsystems, the RNC In-Port and the RNC Ex-Port, located inside and outside the Equatorial Gate Plug #01, respectively. This report presents and discusses the studies performed and results obtained for the design of the ITER RNC focusing on an optical system for the calibration of photomultiplier neutron detectors. The latter will be installed in the Ex-Port part for time-resolved measurement of neutron flux. These activities were carried out within the framework of a collaboration agreement between the ENEA NUCTECFIS-DIM and NUC-FUSEN-DIA laboratories on the topic: “Sviluppo di una diagnostica ottica per ITER Radial Neutron Camera” (“Development of an optical diagnostics for ITER Radial Neutron Camera”) which is part of the F4E (Fusion for Energy) activities assigned to ENEA (grant SG07).File | Dimensione | Formato | |
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