SBOK029D April   2018  – November 2023 TMP461-SP

 

  1.   1
  2.   TMP461-SP Single-Event Effects (SEE) Radiation Test Report
  3.   Trademarks
  4. 1Overview
  5. 2SEE Mechanisms
  6. 3Test Device and Test Board Information
  7. 4Irradiation Facility and Setup
  8. 5Results
    1. 5.1 SEL Results
    2. 5.2 SET Results
    3. 5.3 Event Rate Calculations
  9. 6Summary
  10.   A Confidence Interval Calculations
  11.   B References
  12.   Revision History

5.3 Event Rate Calculations

Event rates were calculated for LEO (ISS) and GEO environments by combining CREME96 orbital integral flux estimations. The error rate was calculated using the upper bound cross section calculated as discussed in Appendix A and the integral flux at approximately LETEFF = 48 MeV∙cm2/mg for LEO (ISS) and GEO. A minimum shielding of 100 mils (2.54 mm) of aluminum and Worst Week solar activity was assumed. Worst Week is similar to 99% upper bound for the environment.

Table 5-3 SET Event Rate Calculations for Worst-Week LEO and GEO Orbits

ORBIT TYPE

ONSET LETEFF (MeV∙cm2/mg)

CREME96 INTEGRAL FLUX (/day∙cm2)

σ SAT (cm²)

EVENT RATE (/DAY)

EVENT RATE (FIT)

MTBE (YEARS)

LEO (ISS)

8.7000

5.38E-01

2.78E-05

8.27E-06

3.44E+02

3.31E+02

GEO

4.54E-02

6.50E-05

2.71E+03

4.21E+01