Kevin C Johns Mechanical Design Engineer Contact 865.574.9227 | JOHNSKC@ORNL.GOV All Publications Conceptual Design of the Moderator Test Station at the Spallation Neutron Source Design and Structural Assessment of the Spallation Neutron Source 2.0 MW Target Fatigue analysis of the Spallation Neutron Source 2 MW target design Bubble Generation in the SNS 2 MW Mercury Target Final Design Report Proton Power Upgrade Project Key Links Organizations Neutron Technologies Division Neutron Technologies Engineering Section Source Development and Engineering Group