Over the years many nice event visualization tools developed

• Tools living in or cooperating with the Key4hep ecosystem:
  • CED: OpenGL based, originates in iLCSoft
  • ddeve: based on ROOT TEve
  • calodisplay: purpose build visualization tool
  • Phoenix: an experiment independent web-based event display
  • dmX: event data browser
• Push towards web based tool(s), example: JSROOT

Purpose build TEve based visualization tool

• Developed to debug LAr geometry
• Based on ROOT TEve classes
• Configured with a JSON file
• Supports 2D and 3D views

G. Marchiori

• Static web application
  • Independent of OS graphics stack
  • Written in TypeScript/Angular
• Developed under HSF
• Detector Geometry provided centrally
  • DD4hep Compact → ROOT → glTF
• Event data provided by user
  • EDM4hep → JSON

• Visualizes event data structure
• Uses Canvas API (2D graphics)
• Collection elements represented as info boxes
• ATM: only MCParticle tree
• Plan to expand it's capabilities to visualize other EDM4hep collections (GSoC student)

Pythia 8 | ee → ZH @ 240 GeV