Performance of SSC LINAC injector

The Superconducting Super Collider (SSC) LINAC Injector consists of an ion source, low energy beam transport (LEBT) and radio frequency quadrupole accelerator (RFQ). The LINAC Injector is required to provide 25 mA of H/sup /eam (pulse width of 9.6-48 /spl mu/s at 10 Hz repetition rate) at 2.5 MeV with transverse normalized rms emittance (/spl epsisub t-n-rms/) of less than 0.2 /spl pi/ mm-mrad and longitudinal normalized rms emittance (/spl epsisub 1/) of less than 0.82*10/sup -6/ eV-s. An RF-driven volume source was chosen for the initial commissioning of the SSC LINAC Injector. The RF volume source generates beams with /spl epsisub t-n-rms/ as low as 0.06 /spl pi/ mm-mrad while meeting all other SSC ion source operating requirements (30 mA at 35 keV). The highly converging input beam required by the SSC RFQ is provided by a dual einzel lens. The initial experimental results from commissioning of the SSC LINAC injector and experimental results pertinent to the performance of the SSC ion source and LEBT are discussed.<
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