SLVK172 June 2024 TPS7H3014-SP
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 (2.54mm) 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 SEL, SEB/SEGR, and SET, the event rate calculation for the SEL, SEB/SEGR, and SET are shown in Table 9-1, Table 9-2, and Table 9-2, respectively. It is important to note that this number is for reference since no SEL, SEB/SEGR, or SET events were observed.
| 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 | 1.23 × 10-7 | 7.70 × 10–12 | 3.21 × 10–4 | 3.56 × 108 |
| GEO | 1.77 × 10–4 | 2.17 × 10–11 | 9.06 × 10–4 | 1.26 × 108 |
| 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 × 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 |
| 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 |
3.69 × 10–8 | 2.31 × 10–12 |
9.62 × 10-5 |
1.18 × 109 |
| GEO | 1.77 × 10–4 | 6.52 × 10–12 |
2.72 × 10-4 |
4.20 × 108 |