Target Chamber and Rotating Target Wheel for Synthesis of Superheavy Elements at Radioactive Ion Beam Line of Lanzhou

The target chamber and the rotating target wheel for synthesis of superheavy elements at Radioactive Ion Beam Line of Lanzhou(RIBLL) are described in the paper. The modified vacuum isolating magnetic coupling rotation device driven by step-motor is also shown. The rotating target wheel is composed of a programmable brushless motor, a vacuum sealing magnetic liquid feed-through and high torque-drive(HTD) strap. The rotation speed of the wheel can be turned from 0 to 600 r•min^-1. The vibration of the target wheel is <0.2 mm.