BEAM TRANSPORT-SYSTEM FOR THE NEW IUCF POLARIZED ION-SOURCE

A high-transmission beam transport system has been designed to couple the new High Intensity Polarized Ion Source (HIPIOS) to the injector c yclotron. Longitudinally, a two stage bunching system will compress 70 % of the DC beam into a phase width of +/-3 degrees with an energy spr ead of less than 3 keV, at a beam energy of 620 keV. A wide band hardw are phase feedback system will lock the RF systems to the beam, and th ere will be diagnostics to measure the beam phase width. Transversely, large aperture quadrupole and dipole magnets will maximize beam trans mission; with diagnostics for measuring the source emittance, the beam polarization, and the cyclotron acceptance. The beam position will be monitored using a non-intercepting system and automated error correct ion will be available. The control system will feature software contro l ''combos'' which will provide single knob control for a variety of b eam focussing properties. The current status of the beam transport sys tem is discussed.