Modernization of the Duoplasmatron of the И-2 Linear Accelerator

A modified ion source of the duoplasmatron type used in the И-2 linear accelerator for generating a proton beam is described. Improving the designs of the electrodes, the magnetic circuit, the gas-supply channel, and the electromagnetic valve has made it possible to considerably increase the service life of the source (up to 107 pulses), to reduce the consumption of hydrogen (up to 10 cm3/h at a pulse repetition rate of 1 Hz), and to increase the stability and reliability of the source operation in the regime of everyday service of the linear accelerator in applied research as an injector of the ITEP U-10 proton synchrotron.