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arXiv physics/0008183physics.acc-ph
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离子直线加速器中的多电荷束动力学

Multiple-Charge Beam Dynamics in an Ion Linac

P. N. Ostroumov, J. A. Nolen, K. W. Shepard

摘要:

需要构建基于超导射频(SRF)技术的中能离子直线加速器。它必须能够产生几百千瓦的连续波光束,范围从质子到铀。为了产生稀有同位素的强束以供随后的加速,需要相当大的功率。然而,目前,可用于较重离子的束功率将受到离子源性能的限制。为了克服这一限制,我们研究了通过直线加速器加速多电荷态(多Q)光束的可能性。我们表明,这样的操作是可行的大的横向和纵向接受,可以在直线加速器中使用超导腔。多Q操作不仅提供了一个实质性的增加,在束流,但也使两个剥离器的使用,从而减少所需的直线加速器的大小。由于超导直线加速器工作在CW模式,空间电荷效应基本上被消除,除了在ECR/ECR区域。因此,可以最小化由于多电荷束加速引起的有效发射度增长。

英文摘要:

There is demand for the construction of a medium-energy ion linear accelerator based on superconducting rf (SRF) technology. It must be capable of producing several hundred kilowatts of CW beams ranging from protons to uranium. A considerable amount of power is required in order to generate intense beams of rare isotopes for subsequent acceleration. At present, however, the beam power available for the heavier ions would be limited by ion source performance. To overcome this limit, we have studied the possibility of accelerating multiple-charge-state (multi-Q) beams through a linac. We show that such operation is made feasible by the large transverse and longitudinal acceptance which can be obtained in a linac using superconducting cavities. Multi-Q operation provides not only a substantial increase in beam current, but also enables the use of two strippers, thus reducing the size of linac required. Since the superconducting (SC) linac operates in CW mode, space charge effects are essentially eliminated except in the ECR/RFQ region. Therefore an effective emittance growth due to the multi-charge beam acceleration can be minimized.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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