Recent improvements in beam performance at TRIUMF

Presented are improvements in the TRIUMF beam properties amd beam behaviour which have recently beam accomplished as a result of improvements in the beam stability and resolution. Two proton beams are normally extracted simultaneously by stripping and their energy can be varied independently between 183 and 520 MeV. The intensity of the beam for the proton users is normally between a few nanoamperes and 10 μA, whereas the beam to the meson users varies between a few microamperes and 100 μA. After successful 100 μA operation, the most significant beam improvement has been the increase in the polarized beam current from 30 nA 200 nA extracted. Progress is continuing toward flat-topping the RF wave form through the addition of a third-harmonic component. With the third harmonic it should be possible to separate turns for a phase interval of about 12 deg