MANUFACTURE OF A COMPACT KU-BAND ELECTRON-CYCLOTRON-RESONANCE ION-SOURCE WITH 2 RESONANCE ZONES AND VARIABLE FREQUENCY

A compact ECR ion source working at a Ku band has been manufactured fo r the production of both low and multiple charged ions. This source ca n be formed for both the ordinal ECR zone and second Bernstein resonan ce zone with a half B-ecr field. The B minimum field configuration is realized by the use of permanent magnets and its axial mirror field ca n be adjusted within +/- 0.03 T by a small auxiliary solenoid. Microwa ve power can be injected from both axial and radial ports. Effective p ower of 200-250 W can be supplied to the source with a continuously va riable frequency in the range of 12.0-14.5 GHz and with a variable pul se mode. The outer dimension of the source is phi 180 x 230 and its to tal weight is just 30 kg. The design, manufacture and results of the p reliminary test are reported. (C) 1998 American Institute of Physics.