Pulsed sources of polarized negative ions are now capable of producing multi-milliampere beams (peak
intensities) for acceleration and strip injection into synchrotrons. Multi-milliampere polarized sources are
operating at INR Troitsk, BNL, until recently at the Indiana University Cooler ring, and in the future at
COSY/Jülich. At BNL, an optically pumped polarized ion source (OPPIS) produces about 1 mA of polarized
H- ions. Future development of this technique could improve the output to > 10 mA but significantly less for
polarized D- beams. The resonant charge-exchange technique is used to ionize polarized atoms at INR,
IUCF, and in the future at COSY. At IUCF, beam intensities of >2 mA of D- ions have been achieved.
Development work at INR shows room for significant improvement. This resonant charge-exchange method is
proposed by Alexander Belov at INR, Moscow to produce polarized 3He beams. The state-of-the-art of these
types of sources is reviewed. The experiences of operating the IUCF source with milliampere polarized
beams of H and D will be described.
Talk Slides: PDF
(Coffee & Cookies before the seminar starting 9:30 AM)