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October 8, 2025Open Access

ALICE Event Display from the legacy ROOT-based visualization to the web-based application

JMJ. W. MyrchaWarsaw University of Technology

Key Points

The new web-based visualization improves interactivity, enhancing understanding of particle trajectories and geometry.
The architecture integrates real-time data from heavy-ion collisions in Run 3, offering a modern approach to visualization.
Transitioning from the previous ROOT framework allows for more sophisticated and interactive visualizations of the quark-gluon plasma.
By utilizing the ALICE O2 Framework, the new system streamlines data gathering and visualization processes.

Abstract

A Large Ion Collider Experiment (ALICE) is one of the four CERN experiments. The area of interest is to study the Quark-Gluon Plasma being produced in heavy-ion collisions. Trajectory of the particles being created is online reconstructed and is visualized together with the detector’s geometry to provide proper augmentation of the presented data. Interactive visualization tool allows 3D visualization of the samples taken from the collected data. Starting from the Run 3 a rewritten solution, due to creation of a new ALICE O 2 Framework has been used. In the first step data gathering part was created. Visualization part was created using technologies from Run 2. This paper presents the process of transition this visualization part to the modern, web-based solution. The architecture of the existing ALICE Run 3 on-line real time visualization solution is presented. The advantages of the new approach is discussed.

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