Development of heavy ion IHQ linac for material irradiation

Abstract We have studied an Interdigital-H type Quadrupole (IHQ) linac structure for application in heavy ion irradiation. It is possible to vary the output energy by changing the voltage between gaps only. The calculated results show that the output energy can be varied from 30 keV/amu (0.48 MeV for 16 O + ) to 100 keV/amu (1.6 MeV). The operating frequency is 30 MHz and the synchronous phase is −30° with the exception of −90° at the first gap that works as a bunching section. The cavity length and diameter are 1.04 and 2.00 m, respectively.