近年来，在低能重离子装置中，分离扇等时性回旋加速器十分引人注目。本文导出了

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度对称的分离扇回旋加速器的粒子运动方程，并对四扇52°的机器进行了数值分析。结果表明，当粒子能量小于100MeV/核子时，

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X

～

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曲线不穿过任何重要的共振线，而质子的最大能量可达300MeV以上。

A particle motion equation has been derived on a 4-fold symmetrical radial sector cyclotron and the stationary orbit properties were analyzed numerically for a 2α=52° machine. The result showed that the particle motion is relatively stable when the particle energy is less than 100 MeV/A.