A Magnetic Scanner for High-Energy Beams of Heavy Ions

Abstract

—Design of a compact magnetic scanner, which is intended for uniform irradiation of stationary targets with dimensions of up to 200 × 200 mm with a beam of heavy charged particles (HCPs) with a charge-to-mass ratio of Z/A = 0.3–0.5, was performed. It can be used to solve a wide range of applied problems. The scanner is optimized for operating with a beam of heavy ions with Z/A = 0.3, an energy of 800 MeV/amu, and an emittance of 40 π mm mrad in both a single-pulse and a multiframe irradiation modes. The developed scanner consists of two compact scanning dipoles (one after the other) and can be placed together with other ion-optical elements within a limited space of the HCP beam transport channel to the target chamber, where a two-dimensional irradiation field is scanned. The main characteristics of the pulsed power supply of the scanner during slow extraction of ion beams are also presented and discussed.