ABSTRACT
The goal for Phoswich One was to obtain particle identification and position sensitivity and to do this in a size that could replace one of the Plastic Box elements. The qood timing properties of plastic scintillator, however, should enable the separation of alphas and protons stopped in the layer from other particles stopped there by time of flight. Part of the solid angle lost due to this slot was reqained by using another plastic scintillator wall behind the telescope. The detection of light particles associated with projectile like fragments can be used to separate transfer and breakup reactions provided the detectors cover a large solid angle. The study of heavy-ion reactions becomes increasingly complicated at higher bombarding energies.
