Belle II Detector Geometry

(1) In glTF format (view in web browser)

• With exterior container
• Sensitive elements only
• Sensitive elements only but without EKLM (viewable on smartphone)

(2) In FBX format ("Filmbox" by Autodesk Corporation)

Semi-hierarchical (written by FBXWriter)

• Belle 2 (94 MB)
• Cryostat (6.4 MB)
• Interaction region (0.8 MB)
• Pixel Detector (1.0 MB)
• Silicon Vertex Detector (4.1 MB)
• Central Drift Chamber (7.8 MB)
• Imaging Time-of-Propagation Detector (2.3 MB)
• Aerogel Ring-Imaging Cerenkov Detector (1.8 MB)
• Electromagnetic Calorimeter (16 MB)
• Solenoid (0.06 MB)
• Barrel KLong-Muon Detector (20 MB)
• Endcap KLong-Muon Detector (33 MB)

Fully hierarchical (written by FBXWriter)

• Belle 2 (35 MB)
• Cryostat (6.4 MB)
• Interaction region (0.8 MB)
• Pixel Detector (0.6 MB)
• Silicon Vertex Detector (3.1 MB)
• Central Drift Chamber (7.8 MB)
• Imaging Time-of-Propagation Detector (0.07 MB)
• Aerogel Ring-Imaging Cerenkov Detector (0.9 MB)
• Electromagnetic Calorimeter (1.9 MB)
• Solenoid (0.06 MB)
• Barrel KLong-Muon Detector (1.6 MB)
• Endcap KLong-Muon Detector (12 MB)

Note: All of these open properly in Unity, FBX Viewer, and Cheetah but not in Maya nor 3ds Max; other applications have not been tested.

(3) In VRML2 format (Virtual Reality Markup Language version 2)

Hierarchical (written by VRMLWriter)

• Belle 2 (15 MB)
• Cryostat (3 MB)
• Interaction region (0.3 MB)
• Pixel Detector (0.2 MB)
• Silicon Vertex Detector (1.2 MB)
• Central Drift Chamber (4 MB)
• Imaging Time-of-Propagation Detector (0.02 MB)
• Aerogel Ring-Imaging Cerenkov Detector (0.3 MB)
• Electromagnetic Calorimeter (0.8 MB)
• Solenoid (0.03 MB)
• Barrel KLong-Muon Detector (0.6 MB)
• Endcap KLong-Muon Detector (4 MB)

Note: All of these open successfully in FreeWRL. belle2, bklm and eklm cause an out-of-memory fault in view3dscene (because of the nesting depth?).

Unstructured (written by GEANT4)

• Belle 2 (75 MB) - missing parts of IR and SVD
• Cryostat (0.2 MB)
• Interaction region (0.3 MB)
• Pixel Detector (0.6 MB)
• Silicon Vertex Detector (0.4 MB) - partial due to failure in visualization code
• Central Drift Chamber (4 MB)
• Imaging Time-of-Propagation Detector (2.4 MB)
• Aerogel Ring-Imaging Cerenkov Detector (1.7 MB)
• Electromagnetic Calorimeter (14 MB)
• Solenoid (0.03 MB)
• Barrel KLong-Muon Detector (26 MB)
• Endcap KLong-Muon Detector (22 MB)