Since this study concentrates on a normally incident particle beam, no attempt has been made to model the satellite housing. The primary elements are shown in Figure 4.1 . The collimator is defined by Kennertium stops. The full modeled geometry is shown in Figure 4.2 . Primary elements of the instrument.
Particles enter through the opening aperture from the left.
The collimator knife edges and stops are made of Kennertium. The first beam path element is the Beryllium window. The largest shaded element is the scintillator. The lead glass light pipe is to the right of the scintillator. A cutaway view of the entire HIST simulated geometry.