Multilayer ${}^{10}B$-RPC neutron imaging detector

Abstract

Resistive plate chambers (RPC) lined with ${}^{10}{B}_4$C neutron converters is a promising cost effective technology for position-sensitive thermal neutron detection capable to outperform ${}^3$He-based detectors in terms of spatial resolution and timing. However, as for the other types of gaseous detectors with a single layer of ${}^{10}{B}_4$C at normal beam incidence, the detection efficiency to thermal neutrons of a single-gap ${}^{10}B$-RPC is only about 6%. Aiming to overcome this limitation, we introduce a multi-layer ${}^{10}B$-RPCs detector with a stack of ten double-gap hybrid RPCs. A description of the detector design and the results of its characterization performed at the TREFF neutron beamline at the FRM II neutron facility are presented. The results demonstrate that the detection efficiency exceeds 60% for neutrons with a wavelength of 4.7 Å and the spatial resolution (FWHM) is about 0.25 mm and 0.35 mm in the X and Y direction, respectively.

References in corpus (3)

• The Multi-Blade Boron-10-based Neutron Detector for high intensity Neutron Reflectometry at ESS
• Boron-10 lined RPCs for sub-millimeter resolution thermal neutron detectors: Feasibility study in a thermal neutron beam
• Boron-10 lined RPCs for sub-millimeter resolution thermal neutron detectors: Conceptual design and performance considerations

Cited by in corpus (4)

• Towards high-rate RPC-based thermal neutron detectors using low-resistivity electrodes
• Concept of a fast neutron detector based on 10B-RPCs
• Timing resistive plate chambers for thermal neutron detection with 3D position sensitivity
• Statistical position reconstruction for RPC-based thermal neutron detectors