Еmittance Measurements of a Gasdynamic Electron Cyclotron Resonant Ion Source
S. V. Barabin, G. N. Kropachev, A. Yu. Lukashin, T. V. Kulevoy, С. С. Выбин, С. В. Голубев, I. V. Izotov, E. A. Kiseleva, В. А. Скалыга, S. V. Grigoriev, Н. А. Коваленко
Abstract
Abstract The advantages of using a gasdynamic proton source based on electron cyclotron resonance in a compact neutron source with a proton accelerator of the DARIA project are discussed. A gasdynamic source of protons has been shown to provide a beam with a current of ~100 mA and a duration more than 100 μs at a repetition rate up to 1000 pulse/s. Using the “pepper-pot” method, measurements of the emittance have been performed of a beam generated by a gasdynamic source of electron cyclotron resonance with two geometric configurations of electrodes forming the beam: “spherical” and plane-parallel. It is shown that the normalized 4-rms emittance for both variants of the beam-formation system electrodes in the extraction voltage ranges from 41 to 48 kV and does not exceed 2π mm mrad.