Wide-aperture back-scattering detector (BSD) for the High-Resolution Fourier Diffractometer (HRFD) at the IBR-2 reactor

2021

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DOI 10.3233/jnr-210001
Data confidence 70 medium
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Abstract

The high-resolution Fourier diffractometer (HRFD) operates at the IBR-2 pulsed reactor, on which the correlation method of data registering has been implemented using a fast Fourier chopper and specialized electronics. A wide-aperture ring back-scattering detector for HRFD has been developed. The detector consists of six [Formula: see text]-scintillation rings, each one of which is divided into 12 sections. Main parameters of this detector: covered solid angle [Formula: see text]; [Formula: see text] sr; average absorption efficiency [Formula: see text], geometric contribution to resolution [Formula: see text]. The concept of a detector and its data acquisition system are presented.