4 Irradiation Facility and Setup

The heavy ion species used for the SEE studies on this product were provide and delivered by the Facility for Rare Isotope Beams (FRIB) at Michigan State University (FRIB Single Event Effects (FSEE) Facility’s linear accelerator.) The FSEE Facility has a dedicated beamline built on the FRIB linac infrastructure with a user experimental station at the end of the FSEE beamline. Ion beams are delivered with high uniformity over a 1-inch diameter exposure area using a thin vacuum window. For this study, ion flux of 10⁵ ions / s-cm² was used to provide heavy ion fluence of 1 × 10⁷ ions / cm² using ¹²⁹Xe ion at a linac energy of 25 MeV / µ. Ion beam non-uniformity for all tests was 6.5%.

Figure 4-1 shows one of the three SN54SC4T125-SEP test board used for experiments at the MSU FSEE facility. The in-air gap between the device and the ion beam port window was maintained at 70 mm for all runs.

Figure 4-1 SN54SC4T125-SEP Evaluation Board at the MSU FRIB Facility