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magnet_v22a.geo.root is made from magnet_v22a.gdml, available from the gdml repo using the following commands
root -l << EOT
TGeoManager::Import("magnet_v22a.gdml")
TFile newfile("magnet_v22a.geo.root","recreate")
TGeoVolume* gdml_vol = gGeoManager->GetTopVolume()
newfile.WriteTObject(gdml_vol)
newfile.Close()
EOT
compared to v21a, the magnet has a renamed top volume to better follow convention.
It enlarges the width of the apperature and entire gometry by 30cm in the x direction.
It enlarges the height of the apperature and entire yoke by 3cm in the y direction (height).
The clamps are elongated in x but the positioning is maintained.
Default geometry to be used as the clamps are to be used with and without the rich detector.
The only acception when the MUCH is used when the other magent geometry is to be used.