Design of an 81.25MHz Drift Tube Linac Based on LORASR

The Drift Tube Linac (DTL) is an important accelerator structure, primarily used to accelerate the beam from low-energy to medium-high energy stages. It is widely applied in scientific research, medicine, materials science, and other fields. This paper provides a detailed design of an 81.25MHz DTL. the dynamic design process of the Drift Tube Linac based on the LORASR software, including the optimization of drift tube geometric parameters, acceleration gap voltage, and Synchronous phase. The final design includes a 2-period KONUS structure with 19 acceleration gaps, supporting 100% transmission efficiency. It ensures stable high-energy particle transport while controlling the emittance growth below the design target of 25%.