2000年SPS横向阻抗测量

PACS2001. Proceedings of the 2001 Particle Accelerator Conference (Cat. No.01CH37268) Pub Date : 2001-07-03 DOI:10.1109/PAC.2001.987274

G. Arduini, H. Burkhardt, K. Cornelis, J. Klem, F. Zimmermann, M. Zorzano

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引用次数: 7

摘要

我们报告了2000年在CERN SPS上的相干调谐位移，头尾增长率和电流依赖的电子加速器相位进步的测量。在两种不同能量下得到的结果比较表明，空间电荷没有显著的贡献。在测量分辨率内，阻抗与1999年相同，与预期的变化对只有少量泵送端口的小影响一致。2000年，在扩大色度范围内采集数据，这增加了对阻抗频率分布的敏感性。测量环周围与电流相关的相位推进有助于定位最重要的阻抗源。

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Measurements of the SPS transverse impedance in 2000

We report on measurements of coherent tune shifts, head-tail growth rates, and current-dependent betatron phase advances at the CERN SPS in the year 2000. Comparing results obtained at two different energies shows that there is no notable contribution from space charge. Within the measurement resolution the impedance is the same as in 1999, consistent with the expected small effect from changes to only a small number of pumping ports. In 2000, data were taken over an expanded range of chromaticities, which increases the sensitivity to the impedance frequency distribution. Measurements of the current-dependent phase advance around the ring help localizing the most important impedance sources.

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PACS2001. Proceedings of the 2001 Particle Accelerator Conference (Cat. No.01CH37268)

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