Initial operation of Cyclone II

Cyclone II is the prototype of a novel high-intensity, low-power-consumption cyclotron for radioisotope production. Its construction began in September 1985. A first H/sup -/ beam was accelerated to the maximum energy of 31.5 MeV in December 1986, and variable-energy extracted beams were obtained in February 1987. During the initial tests, with pulsed RF, the total power consumption was as low as 42 kW. Operation at full intensity (500 mu A) is scheduled for July 1987 after the installation of the prototype in its final shielding vault, currently under construction. A description is given to the magnet design, the RF system, beam injection and extraction, and the control system.