The MoNA Collaboration Multi-Layered SI-BE Segmented Target: Impact On Neutron Rich Nuclei*

Anovel multi-layered Si-Be segmented target was recently commissioned to conduct two experiments at the National Superconducting Cyclotron Laboratory of Michigan State University: one to measure the lifetime of ²⁶O and one to study neutron unbound states in the island of inversion. Thistarget consists of three 700 mg/cm2 thick ⁹Be and four 140-micron thick silicon detectors. It provides unprecedented information on the incident beams and fragments (energy loss and position), thus allowing for better determination of the incident and outgoing energies and momenta of the detected particles compared to previous experiments conducted at this facility by the MoNA Collaboration. The performances of this target and dedicated realistic Geant4 Monte Carlo simulation that includes the experimental setup will be presented and discussed.