The ATLAS Alarm Helper

The Detector Safety System is the last line of defence to protect the ATLAS detector against abnormal and potentially even unforeseen situations. It is designed to return the detector to a safe state based on predefined actions triggered by alarms which are triggered on their part by specific sets of conditions. Every alarm whether it results in an action taken or not is followed up by the operations team that assesses the criticality, takes countermeasures and identifies the point of failure. From experience abnormal situations can result either from faults or from side effects of planned interventions which were either not properly identified despite the mandatory planning and review or where a mistake during execution occurred. In many cases there are multiple interventions ongoing simultaneously in order to profit from shutdown periods. The rapid analysis of alarms while the incident is ongoing is often complicated due to the complexity of the ATLAS detector and its infrastructure and the large number of responsible groups and experts. A new Alarm Helper tool was designed to assist the operation team, particularly the operator in the control room responsible for infrastructure and safety (SLIMOS – Shift Leader in Matters of Safety), by providing real-time information about ongoing interventions and the possible related causes of failure. The new tool will combine historical events, documentation, and limited knowledge about ongoing interventions. It extends the Expert System which visualizes and simulates infrastructure inter-dependencies and allows to trace faults or alarms to a list of potential points of failure. The new tool also proposes which experts should be contacted in the particular circumstances

The ALICE Membership system

With over 2000 active members from 174 institutes over 41 countries in the world, the ALICE experiment is one of the 4 large experiments at CERN. With such numerous interactions, the experiment management needs a way to record members’ participation history and their current status, such as employment, institutes, appointments, clusters and funding agencies, as well as to automatically generate the physics paper author list considering the experiment publication policy. The ALICE Glance Membership system handles all these needs and has been active for more than 8 years, helping the collaboration to organize their data, efficiently. In this document, we describe the new ALICE Glance Membership system, which is the result of breaking the monolithic code of the old version into two well-defined environments. The first is a REST API written in Object-Oriented PHP using the Slim framework to expose the data and Doctrine to access and manage an ORACLE database together with a Domain Driven Design approach to simplify the code architecture, dividing it in smaller self-contained contexts. The second is an HTTP Client written in the Vue.js framework to create a responsive and clean user interface. We will show how these changes have minimised maintenance efforts, lessened new features’ development time, reduced technical depths, facilitated newcomers onboarding and also simplified the user experience

Running Qiskit on ROCm Platform

Qiskit is one of the common quantum computing frameworks and and the qiskit-aer package can accelerating quantum circuit simulation using NVIDIA GPU with the help of THRUST. AMD ROCm framework similar to CUDA, a heterogeneous computing framework supporting both the NVIDIA and AMD GPUs provides the possibility to porting Qiskit/Qiskit-Aer from CUDA platform to its own. We present the porting progress of Qiskit/QiskitAer and preliminary performance test on both NVIDA and AMD GPUs. Our results show that Qiskit/Qiskit-Aer cand work well on AMD GPUs with the help of ROCm/HIP, and has comparable performance on AMD platform

Development of a mathematical model and analysis of the dynamics of an electromechanical perforator with an impact-rotary mechanism

The object of the study is an electromechanical hammer drill with a rotary-impact mechanism. When studying the dynamics of an electromechanical hammer drill with a rotary-impact mechanism, methods of mathematical modeling and comparative analysis were used. A calculation scheme has been developed and, on its basis, the equations of motion of mechanical transmission elements and working tools of an electromechanical hammer drill with a rotating impact mechanism have been obtained. The solution of the resulting equations is carried out using the Runge-Kutta numerical method using the Mathcad computer program. When analyzing the dynamics of the elements of a rotary hammer with an impact-rotating mechanism, the value of the moment of resistance on the part of the rotating mechanism is taken as a variable parameter, since during the operation of the rotary hammer, with increasing drilling depth, the magnitude of the moment acting on the part of the tool increases. The dependences of the angular velocities of the elements of the hammer drill are given, which make it possible to select rational design parameters of the links of the electromechanical hammer drill using an impact-rotary mechanism

Stress in the tank case at mounting displacements and loads on nozzles

In the practice of operating capacitive equipment, production moments often arise due to technical re-equipment and changes in the operating parameters of tanks to meet specific requirements for equipment design in the technological process. Common reconstruction activities involve modifying process nozzles in technical device housings to align with process piping project specifications. Consequently, the stressed-deformed state in vessel bodies before and after reconstruction can vary significantly. During manufacturing or repair tasks, permissible installation displacements, such as the shifting of edges in joined cylindrical shell housings, may occur within regulatory limits. This study focuses on analyzing stress variations and stress distribution zones, considering the combined effects of these factors

Improving the operational reliability of membranes and bellows with fluorinated surfactants

One of the characteristic properties of organofluorine compounds is their low surface energy. In this regard, surfactants containing perfluoroalkyl groups, as a rule, are much more effective than their nonfluorinated analogues. The unique character of fluorinated surfactants is also determined by their pronounced oleophobic properties. Surfaces treated with fluorinated surfactants are not only water-repellent, as in the case of their hydrocarbon analogues, but also benzo- and oil-repellent. Fluorotensides are highly resistant to oxidants and aggressive substances (acids, alkalis, chlorine, etc.). They also have high temperature resistance, withstand oxygen shock, have a solidification temperature of up to -160 °C, do not change properties at a dose rate of up to 108 rad. The applications of surfactants are extremely diverse. One of the methods of increasing the wear resistance of friction pairs is the method of surface treatment of friction pairs with fluorotensides. Fluorotensides are multicomponent systems that include organofluorine surfactants in various solvents and regulatory additives. In Russia, brands of fluorotensides have been created that surpass foreign samples in many respects, which has significantly expanded the scope of their application

Leather squeezing efficiency analysis

This paper presents the results of an efficiency analysis on the pressing of leather after dyeing, determined by the residual moisture content of the leather. The study establishes the law of changes in humidity during the leather pressing process. It was found that as the thickness and initial moisture content of the skin decreases, its final moisture content also decreases. An analytical dependence of the residual moisture content of the skin has been derived, which can be used to determine rational parameters for squeezing machines. The results show that reducing the skin thickness and increasing the roller radius lead to a decrease in the residual moisture content of the leather

Geological and technological viewpoint on 3D Deposit Model – examples of use in Pniówek Coal Mine

During the more than 3 years of the “Quality” program at JSW S.A., a geological database has been built from scratch, collecting data from all exploratory boreholes, roadway profiling and the results of chemical analyses in one place – placing particular emphasis on parameters affecting the quality of coke. Working with digital databases requires new competencies for geologists – the ability to efficiently obtain information ready for further processing. As intended, the geological model became the basis for forecasting the quantity and quality of mined coal used in coke production. In the course of the work, a discrepancy became apparent between the geological interpretation of the structure of the deposit – as understood by the assumptions of the geological documentation, and the technological conditions of mining. The article presents resulting changes in the approach to modeling lithology and quality parameters. In addition, examples of the application of the geological database and the geological model in the daily work of the geological department are presented

Assessment of Water Treatment Processes and Quality Parameters at the Al Hoceima Desalination Plant

Water is a vital resource essential for sustaining life and supporting human development. In the face of increasing population growth, urbanization, and environmental challenges, ensuring access to clean and safe drinking water remains a global priority. This study focuses on assessing the efficacy of water treatment processes at the Al Hoceima Desalination Plant in Morocco, examining various parameters to evaluate water quality improvement. Physicochemical parameters such as pH, conductivity, turbidity, total hardness, alkalinity, chloride, sulfate, calcium, magnesium, and dissolved oxygen, as well as bacteriological indicators including Escherichia coli, intestinal enterococci, coliforms, specific growth rates at 22°C and 37°C, and clostridia spores, were analyzed. The study aims to provide insights into the effectiveness of advanced treatment technologies in producing potable water and ensuring a sustainable water supply. Results indicate significant improvements in water quality following treatment processes, highlighting the importance of reverse osmosis in meeting water quality standards and addressing water scarcity challenges