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arXiv · 2110.09345

First Results with the ANET Compact Thermal Neutron Collimator

Oriol Sans-Planell·Marco Costa·Elisabetta Durisi·Ettore Mafucci·Luca Menzio·Valeria Monti·Lorenzo Visca·Francesco Grazzi·Roberto Bedogni·Saverio Altieri
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Abstract

This paper presents the first determination of the spatial resolution of the ANET Compact Neutron Collimator, obtained with a measuring campaign at the LENA Mark-II TRIGA reactor in Pavia. This novel collimator consists of a sequence of collimating and absorbing channels organised in a chessboard-like geometry. It has a scalable structure both in length and in the field of view. It is characterized by an elevated collimation power within a limited length. Its scalability and compactness are added values with respect to traditional collimating system. The prototype tested in this article is composed of 4 concatenated stages, each 100mm long, with a channel width of 2.5mm, delivering a nominal L/D factor of 160. This measuring campaign illustrates the use of the ANET collimator and its potential application in neutron imaging for facilities with small or medium size neutron sources.

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Oriol Sans-Planell, Marco Costa, Elisabetta Durisi, Ettore Mafucci, Luca Menzio, Valeria Monti, Lorenzo Visca, Francesco Grazzi, Roberto Bedogni, Saverio Altieri. 2021-10-18. First Results with the ANET Compact Thermal Neutron Collimator. https://doi.org/10.1088/1748-0221/16/11/p11025

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