Speaker
Description
The Jet Propulsion Laboratory (JPL) is a NASA center who specializes in robotic explorations of the Solar System. Radiation design is a key consideration for all space missions at JPL. Here, by "radiation design", we means all design activities related to ensure for the safety and success of missions in the radiation environment expected during the missions. It typically involves radiation environment definition and specification, EEE parts selection, radiation analysis and testing,etc. All aspects of radiation effects should be considered for the successful radiation design. Typical radiation effects that should be considered are total ionizing dose (TID), displace damage dose (DDD), single event effect (SEE), surface and internal charging. Depending on mission target, certain types of radiation effects will be more important than other effects. For example, a mission to Jupiter where high energy electron environment is the dominating contributor for radiation effects, internal charging design could be more important than others.
To assess all these radiation effects, various tools are being used for different purposes during the life cycle of a mission. Those include environment models, radiation transport codes, or charging codes. In this talk, we will especially discuss tools being used at JPL for shielding design and charging risk assessment, namely, FASTRAD, NOVICE, MCNP, Geant4, ITS, and NASCAP-2K, and NUMIT. The focus will be to discuss how they are being used at different stages of the flight project cycle for what purposes.
