THE PRIMARY EXPERIMENT RESULT OF INTENSE PULSED LOW ENERGY PROTON BEAM CURRENT MEASUREMENT VIA ~(12)C NUCLEAR ACTIVATION TECHNIQUES AND THE CORRECTION FOR MASS LOSS

摘要

The current of an intense pulsed proton beam is experimentally determined by monitoring delayed radioactivity from nuclear reactions induced in a target by the protons. This nuclear activation technology provides the precise means of determining the number of protons per pulse that is presently available. The cross section and yield for ~(12)C nuclear reactions is given in this article. The beam current was inferred from the number of protons per pulse determined by nuclear activation of a ~(12)C target after the shot. The experiments were carried out at the FLASH Ⅱ accelerator. The delayed radioactivity on ~(12)C target was measured by using the high purity germanium sensitivity semiconductor detector.