Application of Volume Capture in Channeling in a Bent Crystal for Extracting a Circulating Beam from an Accelerator

Abstract

The results of a study of the extraction of a proton beam circulating in the U-70 accelerator by a crystal using the phenomenon of volume particle capture in the channeling mode are presented. When aiming a primary beam of intensity at a crystal in the ring of the U-70 accelerator \(3 \times {{10}^{{11}}}\) p/cycle at the SPASCHARM installation, the intensity was observed up to \(6 \times {{10}^{6}}\) p/cycle. This method was implemented for the first time in global accelerator practice. Despite the lower intensity of the extracted beam compared to traditional extraction based on end-capture of particles, extraction using the volume capture phenomenon provides more stable parameters of the extracted.