High Energy Accelerating Structures for High Gradient Proton Linac Applications

The high-energy part of a proton linac, following a drift tube section, accelerates protons and H- ions of energies above 150 MeV. High efficiency and high gradients in the accelerating structure considered for this part of a proton linac are the objectives of this study. Several known and improved structures working at 1350 MHz were optimized for maximum shunt impedance. The study was performed with the extensive use of a computer code -- SUPERFISH. The theoretical results of this study are presented.