Tripling the Total Charge per Pulse of the Polarized Light Ion Source at COSY/Jülich.

The polarized negative light ion source at the Cooler Synchrotron COSY in Jülich is based on the colliding beams principle. Using an intense pulsed neutralized cesium beam for the charge exchange with a pulsed highly polarized hydrogen beam intensities of 50 μA have been achieved at the end of 2005. The steady improvement has lead to a gain of a factor of three in the total charge contained in one pulse, compared to the record value achieved in 2001. This report sums up the characteristics of the ion source and its components in their present mode of operation and describes the ongoing efforts for still higher beam intensities. © 2007 American Institute of Physics [ABSTRACT FROM AUTHOR]