X-Ray Scanner for Atlas Barrel TRT Modules
  X-ray scanners for gain mapping of ATLAS Barrel Transition Radiation Tracker (TRT) modules were developed at Hampton University for quality assurance purposes. Gas gain variations for each straw of the TRT modules were used to decide whether wires should be removed or restrung, and to evaluate overall module quality. 
Taeksu Shin, O. K. Baker, K. W. McFarlane, Vassilios Vassilakopoulos