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One of the most important activities of the IBR-2 DSC is the development of detector technologies, which will be used as a basis in designing detectors for future experiments. Detector systems developed by the IBR-2 DSC are described. Today they are used to good effect in research facilities or are prepared for application in the foreseeable future. [ABSTRACT FROM AUTHOR]

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 Z n S (A g) / 6 L i F -scintillation rings, each one of which is divided into 12 sections. Main parameters of this detector: covered solid angle 2 θ = (133 − 175) ∘ ; Ω d ≈ 2.0 sr; average absorption efficiency 85 % , geometric contribution to resolution Δ d / d < 0.0005. The concept of a detector and its data acquisition system are presented. [ABSTRACT FROM AUTHOR]

Development of new high-flux-intensity neutron sources and the need to equip them with efficient spectrometers raises the problem of designing special-purpose direct-beam monitors-detectors. These detectors feature an extremely low efficiency and a very low attenuation of the incident neutron beam. In this work, a two-coordinate position-sensitive monitor-detector is described that was developed for real-time recording of the profile of neutron beams generated by both steady and pulsed neutron sources. The basic parameters of this device are the following: a coordinate resolution of 4 × 4 mm2, a sensitive area of 100 × 100 mm2, and a recording efficiency of 10−6−10−2. Use of nitrogen as a converter makes it possible to achieve a record low efficiency and still maintain other parameters at a desired level. The device can be combined not only with high-flux-intensity neutron sources already in use worldwide but also with next-generation sources being developed in the United States (SNS) and Japan (JPARC). [ABSTRACT FROM AUTHOR]

A one-dimensional position-sensitive detector of thermal neutrons has been developed to equip high-efficiency neutron spectrometers at the ИБР-2 research reactor. The detector is based on a multiwire proportional chamber filled with a mixture of 3He + CF4 and has an active area of 200 × 80 mm and a spatial resolution of 2 mm. The detector has been used to good effect in the REFLEX and HRFD spectrometers of the ИБР-2 reactor, as well as in the diffraction facility of the ИВВ-2M research reactor (Zarechnyi, Russia). [ABSTRACT FROM AUTHOR]

The article discusses the development of a new gas multi-section ring-shaped detector (MSRD) at the Frank Laboratory of Neutron Physics (FLNP) of the Joint Institute for Nuclear Research (JINR) in Dubna, Russia. The MSRD, which was developed for the study of samples in small quantities at high pressures, has 16 sections with equal gas volume distribution. It also cites the advantages of MSRD such as large working volume and efficiency.