When cosmic rays or energetic solar particles strike the lunar surface, the secondary energetic particles that escape back into space carry information about the surface composition. These “albedo” particles are also a source of additional radiation exposure for astronauts or hardware at or near the lunar surface, which must be understood in order to plan for survivability of space missions...
Geant4 is currently being used to assist in the design (geometry and shielding) of the SHARP (Solar HARd X-ray Polarimeter) instrument of the PADRE (solar PolArization and Directivity X-Ray Experiment) mission. SHARP will determine the degree of polarization of solar flare non-thermal X-rays. I will present calculations done so far, including MDP (Minimum Detectable Polarization) and mu100. ...
Abstract— This paper presents an investigation on the radiative environments that FPGA devices may encounter, elucidating the mechanisms that play a role in particle-matter interactions and their resulting consequences, notably single event upsets (SEUs). SEUs are soft errors triggered by ionizing particles, which impart charges to storage elements within FPGAs, including configuration memory...
In space radiation environment, SEU mitigation is crucial to guarantee total reliable operation of memory and FPGA devices. This paper presents the design of a an EDAC system based on the combination of partial TMR and the Quasi-cyclic codes implemented in SRAM-based FPGAs to protect SRAM memories against Single Event Upsets. Experimental results show that the proposed EDAC has smaller delay,...
