SLVK222 August   2025 TPS7H5020-SP

 

  1.   1
  2.   2
  3.   Trademarks
  4. 1 Introduction
  5. 2 Single-Event Effects (SEE)
  6. 3 Device and Test Board Information
  7. 4 Irradiation Facility and Setup
  8. 5 LETEFF and Range Calculation
  9. 6 Test Setup and Procedures
  10. 7 Destructive Single-Event Effects (DSEE)
    1. 7.1 Single-Event Latch-up (SEL) Results
    2. 7.2 Single-Event Burnout (SEB) and Single-Event Gate Rupture (SEGR) Results
  11. 8 Single-Event Transients (SET)
  12. 9 Event Rate Calculations
  13. 10Summary
  14.   A References

4 Irradiation Facility and Setup

The heavy-ion species used for the SEE studies on this product were provided and delivered by:

  • 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 1-in 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 ≈4.00 × 104 to 1.00 × 105 ions/cm2 ·s was used to provide heavy-ion fluences of 1.00 ×107. 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.
  • Michigan State University (MSU) Facility for Rare Isotope Beams (FRIB) using a K500 superconducting cyclotron (KSEE) and an advanced electron cyclotron resonance (ECR) ion source. At the fluxes used, ion beams had good flux stability and high irradiation uniformity as the beam is collimated to a maximum of 40mm × 40mm square cross-sectional area for the in-air and vacuum scintillators. Uniformity is achieved by scattering on a Cu foil and then performing magnetic defocusing. The flux of the beam is regulated over a broad range spanning several orders of magnitude. For these studies, ion flux of ≈105 was used to provide heavy-ion fluences of 1.00 × 107. The KSEE facility uses a beam port that has a 3-mil polyethylene naphthalate (PEN) 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 60mm for all runs.

For the experiments conducted on this report, there was 2 ions were used, 165Ho and 169Tm. Both were used to obtain LETEFF of 75MeV·cm2/mg. The total kinetic energies for the ions were:

  • 165Ho = 2.474GeV (15MeV/nucleon)
    • Ion uniformity for these experiments was between 95% and 96%
  • 169Tm = 3.295GeV (19.5MeV/nucleon)
    • Ion uniformity for these experiments was 79.8%

Figure 4-1 shows the open-loop custom SEE evaluation module in front of the beam line at the TAMU facility.

TPS7H502X-SP EVM in Front of the Heavy-Ion Beam Exit Port at the Texas A&M Cyclotron Figure 4-1 TPS7H502X-SP EVM in Front of the Heavy-Ion Beam Exit Port at the Texas A&M Cyclotron