Radiation Hardness Assurance Through System-Level Testing: Risk Acceptance, Facility Requirements, Test Methodology, and Data Exploitation
Résumé
Functional verification schemes at a level different from component-level testing are emerging as a cost-effective tool for those space systems for which the risk associated with a lower level of assurance can be accepted. Despite the promising potential, system-level radiation testing can be applied to the functional verification of systems under restricted intrinsic boundaries. Most of them are related to the use of hadrons as opposed to heavy ions. Hadrons are preferred for the irradiation of any bulky system, in general, because of their deeper penetration capabilities. General guidelines about the test preparation and procedure for a high-level radiation test are provided to allow understanding which information can be extracted from these kinds of functional verification schemes in order to compare them with the reliability and availability requirements. The use of a general scaling factor for the observed high-level cross sections allows converting test cross sections into orbit rates.
Mots clés
System verification
Space missions
Radiation effects
Performance evaluation
Total ionizing dose
Protons
Neutrons
Radiation hardening (electronics)
Commercial off-the-shelf (COTS)
Facilities
Radiation hardness assurance
Risk acceptance
Single-event effect (SEE)
Small satelllites
System-level testing
Test methodology
Total ionizing dose (TID)
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