SLVK231 November   2025 TPS7H4104-SEP

 

  1.   1
  2.   Abstract
  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 Safe Operating Area (SOA) Results
    2. 7.2 Single-Event Latch-up (SEL) Results
    3. 7.3 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 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 1.10 to 1.33 x 105 ions/cm2/s was used to provide heavy-ion fluences of 1.00 x 107 ions/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 betwen 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 ions/cm2/s was used to provide heavy-ion fluences of 1.00 × 107 ions/cm2. 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 50mm for all runs. The KSEE facility was used to collect partial data for the SOA.

For the experiments conducted on this report, including the SOA, there were 3 ions used, 109Ag,165Ho, and 169Tm. 109Ag was used to obtain LETEFF of 48 MeV·cm2/mg. 165Ho and 169Tm were used to obtain LETEFF of 75 MeV·cm2/mg, depending on the test facility. The total kinetic energys for each of the ions were:

  1. 109Ag (TAMU) = 1.634 GeV (15 MeV/nucleon)
    • Ion uniformity for these experiments was ≈91%
  2. 109Ag (MSU) = 2.125GeV (19.5 MeV/nucleon)
    • Ion uniformity for these experiments was ≈91%
  3. 165Ho (TAMU) = 2.474 GeV (15 MeV/nucleon)
    • Ion uniformity for these experiments was ≈90%
  4. 169Tm (MSU) = 3.295GeV (19.5 MeV/nucleon)
    • Ion uniformity for these experiments was ≈90.5%

Figure 4-1 shows the TPS7H4104EVM used for the data collection at the TAMU cyclotron facility.

TPS7H4104-SEP Photograph of the TPS7H4104-SEP EVM in Front of the Heavy-Ion Beam Exit Port at the Texas A&M CyclotronFigure 4-1 Photograph of the TPS7H4104-SEP EVM in Front of the Heavy-Ion Beam Exit Port at the Texas A&M Cyclotron