Study on beam steering in intermediate-/spl beta/ superconducting quarter wave resonators
Study on beam steering in intermediate-/spl beta/ superconducting quarter wave resonators
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DOI：
10.1109/pac.2001.986590
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发表时间：
2001-06
期刊：
影响因子：
--
通讯作者：
A. Facco;V. Zviagintsev
中科院分区：
文献类型：
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作者：
A. Facco;V. Zviagintsev
超导四分之一波谐振腔结构紧凑，便于调谐和耦合，对中强/高能β/束流加速非常有吸引力，最高可达100 MeV/u。这种腔的一个缺点是由横向磁场和电场分量引起的束流转向，这会造成发射度增长和束流溢出，特别是在高强度质子直线加速器中。我们对四分之一波谐振腔中的波束控制进行了分析和数值研究，特别是对于β=0.15-0.45的光束，在不同的352 MHz四分之一波几何形状下进行了研究。结果表明，在这种情况下，另一种腔体取向的解决方案几乎可以取消转向。
Superconducting quarter wave resonators, due their compactness and their convenient shape for tuning and coupling, are very attractive for intermediate-/spl beta/ beam acceleration up to about 100 MeV/u. A drawback of this kind of cavities is the beam steering caused by transverse magnetic and electric field components; this can create emittance growth and beam spill, especially in high intensity proton linacs. We did analytical and numerical studies on beam steering in quarter wave resonators and, in particular, in different 352 MHz quarter wave geometries for beta=0.15-0.45 beams. The results suggest that, in this case, the solution of alternative cavity orientation could nearly cancel the steering.