First i-TED demonstrator: a Compton imager with Dynamic Electronic Collimation

Abstract

i-TED consists of both a total energy detector and a Compton camera primarily intended for the measurement of neutron capture cross sections by means of the simultaneous combination of neutron time-of-flight (TOF) and $\gamma$-ray imaging techniques. TOF allows one to obtain a neutron-energy differential capture yield, whereas the imaging capability is intended for the discrimination of radiative background sources, that have a spatial origin different from that of the capture sample under investigation. A distinctive feature of i-TED is the embedded Dynamic Electronic Collimation (DEC) concept, which allows for a trade-off between efficiency and image resolution. Here we report on some general design considerations and first performance characterization measurements made with an i-TED demonstrator in order to explore its $\gamma$-ray detection and imaging capabilities.

arXiv commentArticle published in Nuclear Inst. and Methods in Physics Research, A, Volume 953, article id. 163228 Elsevier / DOI: 10.1016/j.nima.2019.163228 / CC-BY-NC-ND

References in corpus (11)

• The s Process: Nuclear Physics, Stellar Models, Observations
• Uncertainties in s-process nucleosynthesis in massive stars determined by Monte Carlo variations
• Neutron capture cross section of unstable 63Ni: implications for stellar nucleosynthesis
• The temperature and chronology of heavy-element synthesis in low-mass stars
• Uncertainties in s-process nucleosynthesis in low mass stars determined from Monte Carlo variations
• GEANT4 simulation of the neutron background of the C${}_6$D${}_6$ set-up for capture studies at n_TOF
• Localisation of gamma-ray interaction points in thick monolithic CeBr3 and LaBr3:Ce scintillators
• $\gamma$-Ray position reconstruction in large monolithic LaCl${}_3$(Ce) crystals with SiPM readout
• On the performance of large monolithic LaCl3(Ce) crystals coupled to pixelated silicon photosensors
• The first demonstration of the concept of "narrow-FOV Si/CdTe semiconductor Compton camera"
• First tests of the applicability of $\gamma$-ray imaging for background discrimination in time-of-flight neutron capture measurements

Cited by in corpus (9)

• Imaging neutron capture cross sections: i-TED proof-of-concept and future prospects based on Machine-Learning techniques
• Machine Learning aided 3D-position reconstruction in large LaCl${}_3$ crystals
• Towards machine learning aided real-time range imaging in proton therapy
• Advances and new ideas for neutron-capture astrophysics experiments at CERN n_TOF
• New detection systems for an enhanced sensitivity in key stellar (n,$\gamma$) measurements
• Simultaneous Gamma-Neutron Vision device: a portable and versatile tool for nuclear inspections
• The i-TED Compton Camera Array for real-time boron imaging and determination during treatments in Boron Neutron Capture Therapy
• New perspectives for neutron capture measurements in the upgraded CERN-n_TOF Facility
• Review and new concepts for neutron-capture measurements of astrophysical interest