Abstract

The initial goal of a polarized proton beam extracted from the TRIUMF (Tri-University Meson Facility) cyclotron, having a current of 5 mu A with 60% polarization, has been achieved with the development of the optically pumped polarized H/sup -/ ion source. This beam is now being used to produce an intense secondary beam of polarized neutrons for the TRIUMF experimental program. Much of the recent development effort has addressed the reliability requirements for routine operation. Recent results from using the system are described with emphasis on the laser stabilization subsystem, the modifications to the electron cyclotron resonance proton ion source (ECRIS), the sodium charge exchange cells and the development of a low energy polarimeter. Also discussed are the developments which should lead to a higher polarization. >

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