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

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.