Abstract
Belle2VR is a novel interactive virtual reality visualization of the Belle II detector at KEK and the animation therein of GEANT4-simulated event histories. The user, wearing a VR headset, manipulates a gamepad or hand controller(s) to interact with and interrogate the detailed GEANT4 event history over time, to adjust the visibility and transparency of the particles and detector subsystems, to translate freely in 3D, to zoom in or out, and to control the event-history timeline. In this way, the user explores the world of subatomic physics via electron-positron collision events in the Belle II experiment at the SuperKEKB colliding-beam facility at KEK in Japan. Developed at Virginia Tech by an interdisciplinary team of researchers in physics, education, and virtual environments, the simulation is intended to be integrated into the undergraduate physics curriculum.
Highlights
The Belle II experiment [1] at the High Energy Accelerator Research Organization [3] (KEK) in Tsukuba, Japan studies the properties of heavy quarks and leptons and searches for evidence of new phenomena [2] beyond the Standard Model [4] of elementary particle physics by recording individual electron-positron collisions produced by the SuperKEKB [5] colliding-beam accelerator
The Belle2VR app [8], developed with the Unity game engine [9] by an interdisciplinary team supported by the Institute for Creativity, Arts and Technology [10] at Virginia Tech, imports the detailed GEANT4 history of each simulated event for visualization in virtual reality (VR), allowing users to explore this history as well as the interactions of the daughter particles in each part of Belle II detector
The GEANT4 package provides a comprehensive set of tools to simulate accurately the passage of elementary particles through matter
Summary
The Belle II experiment [1] at the High Energy Accelerator Research Organization [3] (KEK) in Tsukuba, Japan studies the properties of heavy quarks and leptons and searches for evidence of new phenomena [2] beyond the Standard Model [4] of elementary particle physics by recording individual electron-positron collisions produced by the SuperKEKB [5] colliding-beam accelerator. The Belle II Analysis Framework 2 (basf2 [6]) is used to reconstruct and analyze these collision events. This framework incorporates the ability to generate synthetic events and simulate, via the GEANT4 [7] toolkit, the Belle II detector’s response to the daughters of the parent collision. By combining all of these steps, a basf user can generate, simulate, reconstruct and analyze a reference dataset for detailed aggregate comparisons with the billions of recorded events.
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