Data taking has been started at the first stage of the SPASCHARM experiment on systematic study of the spin effects in strong interactions. The current setup configuration is described, and the detector characteristics attained during the beam data taking in the runs of 2018–2022 are listed.

The 10 m(2 )muon hodoscope made of drift tubes with length of 3.7 m and diameter of 52 mm is under development and construction at the NRC Kurchatov Institute-IHEP. In total, 768 drift tubes are grouped into six identical multilayers, each consisting of two tube layers with parallelly placed tubes. The orientation of tubes in adjacent multilayers is orthogonal; thus, the hodoscope has six X and six Y layers of tubes. The mechanical structure, on-chamber electronics, and data acquisition system are described. Expected technical characteristics and some test results are presented.

The on-chamber electronic system of a muon tomograph is described. The system is composed of an MT-48 48-channel front-end module and an RMT-48 fan-out module for the multiplication of control signals. The data-acquisition structure for the Muon Tomograph device is presented.

Описана система накамерной электроники мюонного томографа: 48-канальный регистрирующий модуль МТ-48 и разветвитель сигналов канала управления РМТ-48. Приведена организация сбора информации установки “Мюонный томограф”.

The EuroMISS electronic system, designed for creation of data acquisition systems of Institute of High-Energy Physics (IHEP) physical setups, is described. This system results from the evolution of the MISS system and is implemented in the mechanical Euromechanics standard. The data transmission channel is based on a 16-bit VME bus. The main supply voltage is +5 V, and the additional voltages are +3.3 and −5.2 V. The slow-control subsystem available in the EuroMISS, firstly allows one to configure universal and specialized programmable microcircuits and, secondly, monitor serviceability of system modules by reading values of certain parameters. The list of EuroMISS modules and their brief description are given.

A structure of the data acquisition and control system (DAQC) in the MISS electronics standard for a multichannel detector on drift tubes is described. Its special feature is the use of the specialized LE-83 controller for communications with the computer and LE-83T controller-timer, which fulfills off-line all functions of storing data in its inner memory buffers in real time without an obligatory external trigger launching signal. The rewriting of stored data from the buffer into the computer memory and their transmission via the local network occur periodically in program-specified time intervals. The received data are processed on-line to control the equipment, alert, if a fault is detected, and produce physical results directly to the operator, who interacts with the system through the graphic interface with a possibility of the setup configuration. The system is built as a set of interacting processes, which can operate both on one computer or be distributed on several computers (within the frameworks of the local network).

The Muon Tomograph setup with a 3 × 3 m 2 area of overlapping is described. This setup has been designed to investigate the feasibility of detecting hidden objects with different densities using cosmic muons. Its main performance characteristics are presented.

Muon tomography, based on the measurement of multiple scattering of cosmic ray muons traversing a volume to be investigated, is an attractive technique for detecting hidden high-Z materials. A cosmic ray muon tomograph with sensitive volume of 3m × 3m × 2.5m has been constructed at IHEP (Protvino) and is under producing first data and results. The description and characteristics of the setup are presented. The tomograph is built of 30 mm drift tubes operating in trigger-less mode. Tubes are filled with an Ar-CO 2 mixture and can operate for about one year without refreshing of the gas-mixture. Specialized track reconstruction, tomographic reconstruction and visualization tools were developed. Image reconstruction examples are presented.

Using of multiple Coulomb scattering of cosmic ray muons is an attractive way lor detection of hidden materials. lHEP Protvino group is constructing large-scale prototype to make careful investigation of this subject. At a preliminary stage we have assembled the simplified 1-D prototype to test the concept. The prototype consists of 4 modules (bundles) of 30 mm (OD) drift tubes, top and bottom pairs of modules detect incoming and outgoing muon tracks respectively. Set of runs with different targets was performed. The results show that lead and sleel targets can be detected with few lim precision in X-direction, lead and steel targets of the same shape are distinguished at the moderate number of incoming muons.

A system approach to designing data buses (DBs) widely used in physical setups is described. An equivalent DB circuit taking into account the main factors that influence the quality of the transmitted signals is proposed. In the process of analyzing the integrity of signals by using the equivalent DB circuit and the Signal Integrity program, studies are conducted for the worst combinations of various factors, thus allowing one to eliminate reasons for signal distortions at the simulation stage, ensuring a high quality of the created DBs and reducing the terms of their introduction into physical facilities.

The paper describes the SPHINX facility which includes a wide-aperture magnetic spectrometer with scintillation counters and hodoscopes, proportional chambers and drift tubes, multichannel electromagnetic and hadron calorimeters, a guard system, a RICH velocity spectrometer and a hodoscopical threshold Cherenkov detector for the identification of charged secondary particles. The SPHINX spectrometer, in its last modification, had the possibility to record ∼ 3000–4000 trigger events per an accelerator burst. The spectrometer was used during the last decade in experiments with the 70 GeV proton beam of the IHEP accelerator U-70.

Characteristics of pulse signals transmitted in a multichannel information speed system widely used in physical setups of the State Research Center Institute of High-Energy Physics on a 70-GeV accelerator are studied. The simulation is carried out for various configurations of the system, taking into account special design features of the modules. The characteristics of the pulses and values of correcting (damping) components are determined, and the calculated and experimental results are compared.

Buffer memory modules and off-line controllers of the MИCC system used in the data acquisition systems of experimental facilities at the Institute of High-Energy Physics are described. Multilevel data buffering combined with the appropriate trigger logic allows one to select events and transmit only useful information to a computer.