Background: This paper introduced a device for tandem accelerator project

designed for the radioactive target source module maintaining and testing.Purpose: The module is required to be lifting

rotary and precise orientation in technology.Methods: We designed the structure of rotary drum

supporting drum and screw lifting device to achieve the function.In circumference

we adopt the project with electro-motion cursory locate

hand-motion precise locate

sensor location detect and cylinder locate pin

the measure is safe and trustiness.Results: Via experimentation

all technology targets are fulfilled

and the rationality and reliability of the device has been validated.Conclusions: The successful development of this device provides a good direction and reference for radioactive areas such as accelerator

hot cell

reactor etc.

and can be adapted to its capability of long-distance shield operating

maintaining or testing.