The Injector Complex for the LAMPF Accelerator

The present planning and design goals for the LAMPF injector complex include a high-intensity H+ beam, an H- beam, and polarized H+ and H- beams. Since simultaneous acceleration of H+ and H- beams will be attempted by the LAMPF accelerator, a dual beam-transport system for blending these beams into a common channel will be necessary in the injector area. Provision also is made for injecting either H+ or H- polarized beams into the system. A high-quality beam of protons (?? cm-mrad emittance and 26 mA) has been produced by a von Ardenne duoplasmatron and a Pierce extraction accelerating column. Problems of simultaneous bunching and matching of H+ and H- beams of different intensities have been studied. The entire injector complex is under computer control and should provide reasonably sophisticated pulse programming flexibility.