The RF Parameters of a Five-Gap Drift Tube Linac

The linear accelerator (linac) with a mass-to-charge ratio of A/Z = 8, an energy of 4 MeV/n, and a current of 10 mA is under develop at the National Research Center Kurchatov Institute. The linac consists of an accelerator with radio frequency quadrupole (RFQ) operating at a frequency of 40 MHz, and two accelerating structures with drift tubes DTL1 and DTL2 operating at frequencies of 80 and 160 MHz, respectively. It is assumed that the accelerating structure of DTL2 will consist of 28 five-gap quarter-wave resonators.