New 750 KeV H- Beam Transport Line for LAMPF

The injector complex at LAMPF consists of three injectors with associated transport lines to deliver H+, H-, and P- beams to the linac. Early in 1984 the original H- injector (circa 1973) was replaced with one capable of producing a peak current of 20-mA, a 100X improvement. The motivation for this upgrade was the addition of a proton Storage Ring (PSR) for pulsed neutron research. To support the new operating modes associated with the PSR, the H- transport line was replaced by one having a different design that required changes to portions of the H+ and P- lines, also. This paper describes the new transport system and reports on the initial performance of the H- line.