MacCHESS Staff Scientist (Sr. Research Associate) MacCHESS Staff Scientist Sr. Research Associate Position Summary The Cornell High Energy Synchrotron Source (CHESS) is an internationally-recognized research facility that provides high intensity x-ray beams and state-of-the-art instrumentation to scientists and students from university, government and industrial labs around the world. These groups employ CHESS to conduct research in areas ranging from biology, physics, and chemistry to mechanical and structural engineering, advanced manufacturing, environmental science, materials science, and cultural heritage.