An Optically-Pumped Polarized H- Ion Source for Rhic Spin Physics

A new Optically-Pumped Polarized H^- Ion Source (OPPIS) was developed for the RHIC polarization program and successfully used for the first polarized beam commissioning at RHIC. The OPPIS produces in excess of 1.0 mA H^- ion current at about 80 % polarization. An ECR primary proton source development and a new 29 GHz microwave power supply are described. A new type of sodium-jet ionizer cell is biased to -32 kV to produce a 35 keV polarized beam for injection to the RFQ. Higher current and higher polarization were also obtained with the biased jet-cell in comparison with an older oven-type ionizer cell.