Measurements of transverse particle distributions in a cooled proton beam.

摘要

We present imaging results from the Indiana University Cyclotron Facility (IUCF) of a proton beam at steady state and evolving over time with electron cooling. The effects of the IUCF Cooler's electron cooling system on a proton beam under certain conditions were studied. The results of a search for small deviations from a Gaussian distribution, indicative of the onset of space-charge domination, are discussed. These studies were undertaken with a second generation of a new imaging device, based on the deflection of a weak probe electron beam by the cooled proton beam. This device is described and suggestions are made for further improvement.