The GANIL Accelerating System

The GANIL accelerating system actually consists of 10 RF systems: 2 for the injectors cyclotrons, plus 2 fundamental and 2 flat-topping dees for each of the two large cyclotrons. The fundamental dees (3 to 14 MHz) must provide 1 MV voltage per turn for the large cyclotrons. In order to achieve high beam currents with low energy spread, harmonic, or flat-topping dees will be mounted within the fundamental dees. The flat-topping dees will operate on the 3rd or 5th harmonic of the fundamental frequency.