SLVK174 September   2024 TPS7H1121-SP

 

  1.   1
  2.   TPS7H1121-SP Single-Event Effects (SEE)
  3.   Trademarks
  4. 1 Introduction
  5. 2 Single-Event Effects (SEE)
  6. 3 Device and Test Board Information
    1. 3.1 Device and Test Board Information Continued
  7. 4 Irradiation Facility and Setup
  8. 5 Depth, Range, and LETEFF 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 Total Ionizing Dose from SEE Experiments
  15.   B References

9 Event Rate Calculations

Event rates were calculated for LEO (ISS) and GEO environments by combining CREME96 orbital integral flux estimations and simplified SEE cross-sections according to methods described in Heavy Ion Orbital Environment Single-Event Effects Estimations application report. We assume a minimum shielding configuration of 100 mils (2.54 mm) of aluminum, and “worst-week” solar activity (this is similar to a 99% upper bound for the environment). Using the 95% upper-bounds for SEL, SEB/SEGR, and SET the event rate calculations for SEL, SEB/SEGR, and SET are shown on Table 9-1,Table 9-2, and Table 9-1, respectively. Note that this number is for reference since no SEL, SEB/SEGR, or SET events were observed.

Table 9-1 SEL Event Rate Calculations for Worst-Week LEO and GEO Orbits
Orbit Type Onset LETEFF (MeV-cm2/mg) CREME96 Integral FLUX (/day/cm2) σSAT (cm2) Event Rate (/day) Event Rate (FIT) MTBE (Years)
LEO (ISS) 75 6.26 × 10–5 6.15 x 10-8 3.85 × 10–12 1.60 × 10–4 7.12 × 108
GEO 1.77 × 10–4 1.09 × 10–11 4.53 × 10–4 2.52 × 108
Table 9-2 SEB/SEGR Event Rate Calculations for Worst-Week LEO and GEO Orbits
Orbit Type Onset LETEFF (MeV-cm2/mg) CREME96 Integral FLUX (/day/cm2) σSAT (cm2) Event Rate (/day) Event Rate (FIT) MTBE (Years)
LEO (ISS)

75

 6.26 × 10–5 3.07 x 10-8 1.92 × 10–12 8.02 × 10–5 1.42 × 109
GEO 1.77 × 10–4 5.43 × 10–12 2.26 × 10–4 5.04 × 108
Table 9-3 SET Event Rate Calculations for Worst-Week LEO and GEO Orbits
Orbit Type Onset LETEFF (MeV-cm2/mg) CREME96 Integral FLUX (/day/cm2) σSAT (cm2) Event Rate (/day) Event Rate (FIT) MTBE (Years)
LEO (ISS) 75 6.26 × 10–5 6.15 x 10-8 3.85 × 10–12 1.60 × 10–4 7.12 × 108
GEO 1.77 × 10–4 1.09 × 10–11 4.53 × 10–4 2.52 × 108