Polarized negative ion source at the Kyoto University Tandem Accelerator

A polarized H− and D− ion source is newly constructed. Atomic H or D beams from a dissociator with a cooled nozzle enter a system of permanent sextupole magnets and a radio-frequency transition (RFT) where they are focused and polarized. They enter a downstream electron-cyclotron-resonance (ECR) heated plasma ionizer from which positive ions are extracted. Negative ions are produced from the positive beam by charge exchange in rubidium vapor. Beam test results are briefly described.