Correlation of beam loss to residual activation in the AGS

Studies have been done in which first order correlations have been made between measured beam losses on the distributed ionization chamber system in the Alternating Gradient Synchrotron (AGS) and the health physics recorded residual activation. In recent years, the AGS has run high-intensity protons primarily for rare kaon decay experiments. In this mode of running, the AGS typically accelerates a beam from an injection momentum of 0.644 GeV/c up to a slow extracted beam (SEB) momentum of 24.2 GeV/c. The beam intensities are on the order of 4.5*10/sup 13/ protons per AGS cycle at injection to as high as 1.9*10/sup 13/ protons per AGS cycle at extraction. Residual activation varies around the AGS ring from on the order of 5 mR/hour to levels on the order of 5 R/hour. The highest levels occur around the AGS beam catcher and the extraction equipment.<>