Geometry of the Target in Geant

by Ilse Koenig, April 9, 1998

Fig 1: Front view of target configuration with 13 segments. The red ellipsoid in the center is the first target.

Fig 1: Back view of target configuration with 13 segments.

Fig 2: Geometry tree of target in Geant

The volume RTAM (filled with VAKUUM$) is the keepin volume for the target parts. Its is part of the Rich inside the beamtube. The Aluminium support ring TARI holds six steel needles TASR on which the 13 target support stripes TASS made from mylar are pierced. The targets TRAG have an elliptical shape and are all alligned with the long side upwards.