Frank Laboratory of Neutron Physics

Nuclear Physics Division

Scientific leader: Valery Shvetsov

Date and Time: Wednesday, 16 July 2025, at 11:00 AM

Venue: FLNP Conference Hall, Frank Laboratory of Neutron Physics

1. Seminar topic: “Development of a monitoring system using modern technologies for the IREN Facility at JINR”

   Speaker: Ivan Ponomarev

   Abstract:
   

   The IREN Facility at JINR is a two-section linear electron accelerator with a neutron-producing target, which requires reliable monitoring to optimise its performance. This work presents a monitoring system for IREN that tracks key parameters such as neutron flux intensity, target and section temperatures, beam current, integral, width, and shape. The system is built using the Proxmox virtual machine management platform, along with LXC and Docker containerisation technologies. Backups are stored on a NAS (Network Attached Storage). The stack includes Prometheus for metrics collection and storage, Loki for log aggregation, Grafana for visualisation, Alertmanager for alerting, Nginx as a web server, Promtail for log shipping, and custom Python/Golang agents for acquiring the main metrics. Initial data analysis has already revealed meaningful correlations, helping improve the facility’s operation. Current efforts are focused on integrating additional signals such as vacuum level, beam power, and others, which will enable more effective control and further optimisation of the IREN Facility.




2. Seminar topic: “Analysis of energy characteristics of the LUE-200 Accelerator beam”

   Speaker: Igor Zhironkin

   Authors: Igor Zhironkin, Kirill Mikhailov, Artem Repkin, Anatoly Sumbaev

   Abstract:
   

   The LUE-200 Linear Electron Accelerator, the core of the photoneutron source of the IREN JINR Facility, is formed by an assembly of two accelerating sections with a travelling EM wave of the 10 cm range (2856 MHz). The energy spectrum of the electron beam is one of the main parameters affecting the average power, and therefore the neutron yield. In this presentation, the authors attempt to systematise the results of adjusting the accelerator from the point of view of increasing the average and maximum beam energy and minimising the spectrum width. The main tools considered are the level of RF power introduced into the accelerating sections, the matching of frequency characteristics of the SLED power compression systems, accelerating sections and the master oscillator, and the selection of the timing and amplitude of the injected beam.