Geant4 Applications for Modeling Molecular Transport in Complex Vacuum Geometries

We discuss a novel use of the Geant4 simulation toolkit to model molecular transport in a vacuum environment, in the molecular flow regime. The Geant4 toolkit was originally developed by the high energy physics community to simulate the interactions of elementary particles within complex detector systems. Here its capabilities are utilized to model molecular vacuum transport in geometries where other techniques are impractical. The techniques are verified with an application representing a simple vacuum geometry that has been studied previously both analytically and by basic Monte Carlo simulation. We discuss the use of an application with a very complicated geometry, that of the Large Synoptic Survey Telescope camera cryostat, to determine probabilities of transport of contaminant molecules to optical surfaces where control of contamination is crucial.Comment: 7 pages, 4 figures, 2 tables, to appear in IJMSSC, updated to accepted versio

2016 Faculty Accomplishments Reception

Program for the 2016 Faculty Accomplishments ReceptionIn Honor of University of Richmond Faculty Contributions to Scholarship, Research and Creative Work, January 2015 - December 2015February 19, 2016, 3:30 - 5:00 p.m.Boatwright Memorial Library, Research & Collaborative Study Area, First Floorhttps://scholarship.richmond.edu/far-programs/1003/thumbnail.jp