Preliminary Hardware Concepts for a High-Energy Electron-Ring Accelerator

Results of the first study of the conceptual design of a collective-effect proton accelerator of substantial energy (65-100 GeV) are described. Basic theoretical considerations are outlined and components and their arrangement for a conceptual accelerator are discussed. This first study shows that the promise of ERA principle to produce remarkably compact accelerators can be achieved by use of single-pulse surge-excited acceleration cavities. The example single-pass machine provides accelerating gradients of 250 MeV/meter overall where conventional synchrotrons yield 4o-80 MeV/ meter. The relaxed tolerances of the surge-excited cavities and their associated components allow great advantage to be taken of mass-production techniques with ensuing low cost (¿ M$ 0.24/GeV).