Radiation analysis

Open Radiation Analysis

The page has the mission parameters on one side and the results on the other.

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Or use it inside a study

In a concurrent engineering study, open the Radiation tab. The orbit and the mission life are taken from the mission part of the study, and the result of a run can be saved in the study so that the report states it. The tool works the same way on its own.

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Enter the mission

Enter the altitude in km, the inclination in degrees and the duration in years.

Enter shielding and electronics

Enter the aluminium shielding thickness in mm, as a spherical equivalent, choose the component class (COTS, industrial or radiation hardened), the SEU LET threshold in MeV·cm²/mg and the memory size in bits, for example 1e9 for 1 Gbit.

Run the analysis

Press Run radiation analysis. The results appear in sections.

Read the results

Mission TID gives the total ionising dose in krad(Si), to compare with what your parts tolerate. The particle environment gives the electron and proton fluxes and the L shell. SEU gives the upsets per device per day and in the mission, and warns when EDAC or TMR is needed. Displacement damage gives the NIEL dose and the end of life solar array loss.

Derive the test from the mission

Each step feeds the next. The dose tab hands its orbit, mission life, proton spectrum and dose to the 3D shielding and to the test planning; the 3D shielding hands the thickness behind a real part. In Test planning, the first tab gives the dose levels, the proton energies and fluences, and the heavy ion LETs of the test, with the time and the number of runs for the beam current and the spot diameter of the facility. Every energy can be edited to the energies the facility has, and the fluences follow.