4 Irradiation Facility and Setup

The heavy-ion species used for the SEE studies on this product were provided and delivered by the Texas A&M University (TAMU) Cyclotron Radiation Effects Facility using a K500 superconducting cyclotron and an advanced electron cyclotron resonance (ECR) ion source. At the fluxes used, ion beams had good flux stability and high irradiation uniformity over a 1in diameter circular cross-sectional area for the in-air station. Uniformity is achieved by magnetic defocusing. The flux of the beam is regulated over a broad range spanning several orders of magnitude. For these studies, ion flux of 10⁵ions/cm²×s was used to provide heavy-ion fluences of 1 × 10⁷ – 1.5 × 10⁷ions/cm². The TAMU facility uses a beam port that has a 1-mil Aramica window to allow in-air testing while maintaining the vacuum within the particle accelerator. The in-air gap between the device and the ion beam port window was maintained at 40mm for all runs.

For the experiments conducted on this report, there were four ions used, ¹⁰⁹Ag, ⁸⁴Kr, ⁴⁰Ar, and ¹⁴N. The list of ions and the respective LET are:

Figure 4-2 shows EVM#1 in front of the beam line at the TAMU Cyclotron facility. The in-air gap between the device and the ion beam port window was maintained at 40mm for all runs.Figure 4-1 shows EVM#1 through the beam line camera at TAMU Cyclotron facility. A FLIR (FLIR ONE Pro LT) thermal camera was used to validate die temperature to make sure the device was accurately heated, (see Figure 4-3).

Figure 4-1 ISOS510-SEP EVM through Beam Line Camera at the Texas A&M Cyclotron

Figure 4-2 ISOS510-SEP EVM in Front of Heavy-Ion Beam Exit Port at the Texas A&M Cyclotron

Figure 4-3 ISOS510-SEP EVM FLIR Thermal Image for SEL