花瓣形加速器加速腔结构的优化设计
Design of resonant cavity of petal-shaped accelerator
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摘要: 介绍了一种新型辐照加速器——花瓣形加速器NB100（10 MeV/100 kW）。用电磁场3维仿真软件模拟计算了此种加速器加速腔的高频特性参数，研究了腔体特性参数与几何尺寸的关系，在考虑电子束渡越时间情况下，优化出了一组频率为100 MHz时的加速腔结构其尺寸为：腔体高度1 547 mm，外筒内半径980 mm，内筒外半径240 mm，内筒倒圆角半径210 mm，外筒倒圆角半径110 mm。计算结果表明：该种新加速腔具有较高的有效分路阻抗和品质因数。Abstract: This paper introduces a new type Irradiation accelerator-petal-shaped radiation accelerator NB100（10 MeV/100 kW）.The RF characteristic parameters of the accelerating cavity of NB100 was simulated with Microwave Studio. The relationships between the RF characteristic parameters and the geometrical parameters were studied. The paper optimizes the 100 MHz accelerating structure considering the transit-time of electron beam. The results show that the new type accelerating cavity has relatively high effective shunt impedance and quality factor.
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