Abstract
The room-temperature Cross-Bar H-Type Drift-Tube Linac (CH-DTL) is one of the candidate accelerating structures, working at 325 MHz in CW mode, for the Chinese ADS project. In this study the multi-cell cavity geometry has been optimized using the method of “parameter sweeping with constraint variable” which is found superior to parameter sweeping with a single variable. To facilitate manufacture, a spherical drift tube shape is adopted. It can be concluded that a cavity having cylindrical end cups has higher shunt impedance than one with cone-shaped end cups.
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