SBOK086 December   2024 TRF0208-SEP

 

  1.   1
  2.   2
  3.   Trademarks
  4. 1 Overview
  5. 2 Single-Event Effects
  6. 3 Test Device and Evaluation Board Information
  7. 4 Irradiation Facility and Setup
  8. 5 Depth, Range, and LETEFF Calculation
  9. 6 Test Set-Up and Procedures
  10. 7 Single-Event Latch-up (SEL) Results
  11. 8 Single-Event Transients (SET) Results
  12. 9 Event Rate Calculations
  13. 10Summary
  14.   A Total Ionizing Dose from SEE Experiments
  15.   B Confidence Interval Calculations
  16.   C 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. 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 the SET the event-rates of the TRF0208-SEP are tabulated in Table 9-1.

Table 9-1 SET Event Rate Calculations for Worst-Week LEO and GEO Orbits
Orbit TypeOnset LET (MeV·cm2/mg)CREME96 Integral Flux
(/day·cm2)		σ SAT (cm2)Event Rate (/day)Event Rate (FIT)MTBE (Years)
LEO (ISS)9.62

36.4

4.5 × 10-63.12 × 10-6

129.809

879.406

GEO

301

2.45 × 10-5

1019.52

111.969