Two types of external ion sources, an ECR ion source and a polarized ion source (under construction) are ion source is of a two-stage configuration, and 10GHz microwaves are applied to both stages. This source has been providing highly-charged very low-energy beams to atomic physics experiments as well.
Following figure shows the photograph of the AVF cyclotron.
External Ion Souce Type ECR, Polarized ion Source Injection Type Vertical injection with a spiral inflector Main Magnet K-value 70 MeV No. of sectors 4 Pole Diameter 1.7m Max. Flux Density 1.7 Tesla on the average Extraction Radius 0.714 m Trim coils 9 pairs Harmonic Colis 4 paires Weight 110 tons Acceleration System RF Amp. final tube 4CW50000E tetrode (EIMAC) No. of Dees 2 Dee angle 85 deg. Frequency Range 12-24 MHz Frequncy Tuning Shortin plate and trimmers Harmonic No. 2 Charge/Mass Ratio >= 1/4 Dimensions Diameter 4 m Hight 2.8m