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The Sonix package is the main instrument control software at the IBR-2 reactor. It was originated in the beginning of 1990s for the Neutron Spectrometer with High Resolution (beam 6A of IBR-2). Later the complex was transferred to other instruments, including those located outside Frank Laboratory of Neutron Physics. A little bit less than 20 installations are in operation now. When developing the complex, we were guided both by world trends, as well as by the specifics of our laboratory. Many important requirements were formulated by our users, therefore, they can be considered as real co-authors of the project. Besides an instrument control itself, the complex also includes remote measurement supervising subsystem (WebSonix service) and the central repository for measurement results.

—This article discusses the results of parallel measurements with two-coordinate position-sensitive He3 detectors with a delay line, which are installed on REFLEX and GRAINS neutron spectrometers of the IBR-2 pulsed reactor with the simultaneous use of three data acquisition systems: DeLiDAQ-1, DeLiDAQ-2, and a system based on the N6730 digitizer produced by CAEN.

The modernization of the detector system and control system of the neutron powder diffractometer (NPD) in the GEK-5 channel of the VVR-c reactor (Obninsk Branch, Karpov Institute of Physical Chemistry) is described. The PC-connected hardware and software complex, which ensures data acquisition and storage and control of the experiments, is created. The main modules of the NPD automation system and Sonix+ control software package, designed at the Frank Laboratory of Neutron Physics at JINR, are briefly described. The modernization has made it possible to increase the luminosity of the diffractometer and completely automatize the measurement process.