Design of a beam transport system for a proton radiation therapy facility

A new beam transport system has been designed to bring the 210 MeV proton beam from the Indiana University Cyclotron to four proton therapy treatment rooms. The main trunk line will be achromatic and employ a fast beam splitting system to allow treatments simultaneously in different treatment areas. To enhance flexibility of operation, each treatment room will have its own energy degrader and energy selection system. There will be two treatment rooms with a fixed horizontal beam line. The first will be an upgrade to our current eye treatment facility and the second will be designed for head, neck, and brain treatments including stereotactic radiosurgery. In addition, there will be two rooms with iso-centric gantries for more complex multi-port treatments.