Polarized D' Operation and Development of the IUCF Ion Source CIPIOS

摘要

The Cooler Injector Polarized 10n Source (CIPIOS) has most recently been used to provide polarized and unpolarized beams of negative deuterium ions for filling the injector synchrotron. More than 1.8 mA of up to 90% polarized D~- was available for injection into the RFQ pre-accelerator and several milliamperes of unpolarized beam was available. The addition of an electron blocker in a charge exchange ionizer with a two-stage converter improved the source operation by reducing the total electron current extracted for the maximum 300 A arc discharge current available. A doubling of this discharge current is now possible and should result in a corresponding increase in polarized current.