SLVK226 October 2025 TPS7H4012-SEP
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. Assume a minimum shielding configuration of 100mils (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 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 9-2, respectively. Note that this number is for reference since no SEL, SEB/SEGR, or VIN=12V 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) | 48 | 4.50 × 10–4 | 5.27 × 10-8 | 2.37 × 10–11 | 9.88 × 10–4 | 1.15 × 108 |
| GEO | 1.48 × 10–3 | 7.78 × 10–11 | 3.24 × 10–3 | 3.52 × 107 |
| Orbit Type | Onset LETEFF (MeV-cm2/mg) | CREME96 Integral FLUX (/day/cm2) | σSAT (cm2) | Event Rate (/day) | Event Rate (FIT) | MTBE (Years) |
|---|---|---|---|---|---|---|
| LEO (ISS) | 48 | 4.50 × 10–4 | 2.63 × 10-8 | 1.19 × 10–11 | 4.94 × 10–4 | 2.31 × 108 |
| GEO | 1.48 × 10–3 | 3.89 × 10–11 | 1.62 × 10–3 | 7.04 × 107 |
| Orbit Type | Onset LETEFF (MeV-cm2/mg) | CREME96 Integral FLUX (/day/cm2) | σSAT (cm2) | Event Rate (/day) | Event Rate (FIT) | MTBE (Years) |
|---|---|---|---|---|---|---|
| LEO (ISS) | 48 | 4.50 × 10–4 | 5.27 × 10-8 | 2.37 × 10–11 | 9.88 × 10–4 | 1.15 × 108 |
| GEO | 1.48 × 10–3 | 7.78 × 10–11 | 3.24 × 10–3 | 3.52 × 107 |