Archivio Istituzionale della RicercaThe JET tangential gamma-ray spectrometer is undergoing an extensive upgrade in order to make it compatible with the forthcoming deuterium-tritium (DT) experiments. The paper presents the results of the design for the main components for the upgrade of the spectrometer beam-line: tandem collimators, gamma-ray shields, and neutron attenuators. The existing tandem collimators will be upgraded by installing two additional collimator modules. Two gamma-ray shields will define the gamma-ray field of-view at the detector end of the spectrometer line-of-sight. A set of three lithium hydride neutron attenuators will be used to control the level of the fast neutron flux on the gamma-ray detector. The design of the upgraded spectrometer beam-line has been supported by extensive radiation (neutron and photon) transport calculations using both large volume and point radiation sources. (C) 2017 The Authors. Published by Elsevier B.V.
Upgrade of the tangential gamma-ray spectrometer beam-line for JET DT experiments / Curuia, Marian; Craciunescu, Teddy; Soare, Sorin; Zoita, Vasile; Braic, Viorel; Croft, David; Fernandes, Ana; Figueiredo, Joao; Goloborod’Ko, Victor; Gorini, Giuseppe; Griph, Sverker; Kiptily, Vasily; Lengar, Igor; Mianowski, Slavomir; Naish, Jonathan; Naish, Richard; Nocente, Massimo; Pereira, Rita Costa; Riccardo, Valeria; Schoepf, Klaus; Santos, Bruno; Subba, Fabio; Tardocchi, Marco; Yavorskij, Victor; Zychor, Izabella. - In: FUSION ENGINEERING AND DESIGN. - ISSN 0920-3796. - 123:(2017), pp. 749-753. [10.1016/j.fusengdes.2017.05.064]
Upgrade of the tangential gamma-ray spectrometer beam-line for JET DT experiments
Subba, Fabio;
2017
Abstract
The JET tangential gamma-ray spectrometer is undergoing an extensive upgrade in order to make it compatible with the forthcoming deuterium-tritium (DT) experiments. The paper presents the results of the design for the main components for the upgrade of the spectrometer beam-line: tandem collimators, gamma-ray shields, and neutron attenuators. The existing tandem collimators will be upgraded by installing two additional collimator modules. Two gamma-ray shields will define the gamma-ray field of-view at the detector end of the spectrometer line-of-sight. A set of three lithium hydride neutron attenuators will be used to control the level of the fast neutron flux on the gamma-ray detector. The design of the upgraded spectrometer beam-line has been supported by extensive radiation (neutron and photon) transport calculations using both large volume and point radiation sources. (C) 2017 The Authors. Published by Elsevier B.V.
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https://hdl.handle.net/11583/2986885