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Nuclear analysis of the ITER radial neutron camera architectural options
ENEA, Dept Fus & Nucl Safety Technol, I-00044 Rome, Italy..ORCID iD: 0000-0001-9948-4268
ENEA, Dept Fus & Nucl Safety Technol, I-00044 Rome, Italy..
ENEA, Dept Fus & Nucl Safety Technol, I-00044 Rome, Italy..
ENEA, Dept Fus & Nucl Safety Technol, I-00044 Rome, Italy..
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2017 (English)In: Fusion engineering and design, ISSN 0920-3796, E-ISSN 1873-7196, Vol. 123, p. 1033-1038Article in journal (Refereed) Published
Abstract [en]

The ITER Radial Neutron Camera (RNC) is a multichannel detection system hosted in the Equatorial Port Plug 1 (EPP 1) designed to provide information on the neutron source total strength arid emissivity profiles. It consists of two sub-systems: the ex-port line-of-sights (LOSs), covering the plasma core, embedded in a massive shielding block located in the Port Interspace, and the in-port LOSs distributed in two removable cassettes integrated inside the Port Plug. Presently, the RNC layout development process is undergoing a System Level Design phase: several preliminary architectural options based on a System Engineering work have been defined: a detailed nuclear analysis of these options has been performed through radiation transport calculations with the MCNP Monte Carlo code. The radiation environment at the detectors positions has been fully characterized through the evaluation of the expected neutron spectra and the secondary gamma background and the analysis of the 3D radiation maps. MoreOver, the impact of a reduced ex-port shielding block on the neutron and gamma spectra has been investigated. The results of the present study provide guidelines for the development of the RNC final design and the necessary data for the measurement performance analysis.

Place, publisher, year, edition, pages
ELSEVIER SCIENCE SA , 2017. Vol. 123, p. 1033-1038
Keywords [en]
ITER, Radial neutron camera, Neutronics, Equatorial port plug, Design, Analysis
National Category
Accelerator Physics and Instrumentation
Identifiers
URN: urn:nbn:se:uu:diva-341824DOI: 10.1016/j.fusengdes.2017.01.031ISI: 000418992000217OAI: oai:DiVA.org:uu-341824DiVA, id: diva2:1183218
Conference
29th Symposium on Fusion Technology (SOFT), SEP 05-09, 2016, Prague, CZECH REPUBLIC
Available from: 2018-02-16 Created: 2018-02-16 Last updated: 2018-02-16Bibliographically approved

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Conroy, Sean

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