OLTARIS Enhancements Supporting the Europa Mission

The On-Line Tool for the Assessment of Radiation in Space (OLTARIS, https://oltaris.nasa.gov) is a web-
based set of tools and models that allow engineers and scientists to assess the effects of space radiation on
spacecraft, habitats, rovers, and spacesuits. The site is intended to be a design tool for those studying the
effects of space radiation for current and future missions as well as a research tool for those developing
advanced material and shielding concepts. The tools and models are built around the HZETRN radiation
transport code and are currently focused on human-related responses. This code and the team behind its
continuing development have been identified by NASA to support verification of human radiation design
requirements.

The focus of this poster is to highlight new capabilities that have been added to support outer planet
missions. Specifically, the electron, proton, and heavy ion design environments for the Europa mission have
been incorporated along with an efficient coupled electron-photon transport capability to enable the
analysis of complicated geometries and slabs exposed to these environments. The poster will describe how
OLTARIS can be used by instrument vendors and mission designers to analyze their specific requirements.