SBAK019 May 2024 ADC3683-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 shown in Heavy Ion Orbital Environment Single-Event Effects Estimations.
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) is assumed. Using the 95% upper-bounds for the SEL and SET, the event rates for SEUs and SEFIs are listed in Table 9-1 and Table 9-3. Figure 9-1 and Figure 9-3 show the cross sections versus LETEFF .
Orbit Type | Onset LETEFF (MeV-cm2/mg) | σSAT (cm2) | Event Rate (/day) | Event Rate (FIT) | MTBE (Years) |
---|---|---|---|---|---|
LEO (ISS) | 7 | 2.25 × 10–5 | 4.20 × 10–6 | 1.75 × 102 | 6.52 × 102 |
GEO | 3.32 × 10–5 | 1.38 × 103 | 8.26 × 101 |
Orbit Type | Onset LETEFF (MeV-cm2/mg) | σSAT (cm2) | Event Rate (/day) | Event Rate (FIT) | MTBE (Years) |
---|---|---|---|---|---|
LEO (ISS) | 7 | 1.43 × 10–5 | 6.69 × 10–6 | 2.79 × 102 | 4.10 × 102 |
GEO | 5.32 × 10–5 | 2.22 × 103 | 5.15 × 101 |
Orbit Type | Onset LETEFF (MeV-cm2/mg) | σSAT (cm2) | Event Rate (/day) | Event Rate (FIT) | MTBE (Years) |
---|---|---|---|---|---|
LEO (ISS) | 12 | 1.31 × 10–5 | 8.17 × 10–7 | 3.40 × 101 | 3.35× 103 |
GEO | 6.35 × 10–6 | 2.64 × 102 | 4.32 × 102 |