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The upgraded LHCb detector allows the collection of data in the third physics run at instantaneous luminosity up to 2·1033 cm-2s-1 in proton-proton collisions at energy up to 14 TeV. A set of high-speed monitoring systems, including the RMS-R3 system, which monitors the nuclear interactions in the interaction region of the IP-8 (LHCb) experiment and the background, ensures the effective conduct of the experiment. An important functional characteristic of this system is the observation of luminosity stability over a wide dynamic range, which in its upper limit provides a linear response at ten times the nominal luminosity. This paper illustrates a new functionality feature of the RMS-R3, which is its ability to produce highly accurate data on the localization of the physical events of nuclear collisions in the interaction region of the experiment. The data measured in 2022 - 2023 allow us to observe the parameter variation impact of the nucleus-nucleus average number interactions in a single bunch crossing of the beams, the change of the state of the VELO detector and the injection of gaseous target SMOG2 by different gases.

The upgraded Large Hadron Collider beauty (LHCb) detector will provide data taken in Run3 at the instantaneous luminosity of proton-proton collisions increased to 2⋅1033 cm-2s-1 at energies of up to 14 TeV. To ensure the safe operation of the experiment, a new beam and background Radiation Monitoring System (RMS-R3) was built. RMS-R3 is based on metal-foil detector technology developed at the Institute for Nuclear Research, National Academy of Sciences of Ukraine (Kyiv, Ukraine). The system comprises four detector modules with two sensors in each. Their frequency response is proportional to the flux of incident charged particles. The modules are located around the beam pipe at a distance of 2.2 m from the interaction point. The results measured during the Run3 in 2022 testify to the reliable operation of the system. Applying the asymmetry method, high-accuracy data were obtained on the localization of the interactions region and the beam and background contribution.

A system for quality assessment of micropixel detectors is presented. The system includes a laser scanning microprobe and a setup for studying the response of micro detectors to minimum ionizing particles. The results of the validation of the developed system indicate its suitability for assessing the quality of the latest monolithic active pixel sensors (MAPS), promising elements of large-area tracking systems for future high-energy physics experiments. Comparison of MAPS with the double-sided microstrip detectors of the CBM experiment (FAIR, Darmstadt) indicates the feasibility of the upgrade of its Silicon Tracking System using MAPS.