Beamline 2 : The vacuum chamber in which the beam travels (generally includes associated components of beam transport, such as magnets, beam dumps, accelerating cavities, etc)
Jefferson Lab, Radiation Worker Glossary, Newport News, VA, USA 2007. http://www.jlab.org/div_dept/train/rad_guide/gloss ary.html, (Rad Sfty, Prot and Cont - Amer) {1005}