BEAM DYNAMICS SIMULATIONS OF THE EFFECT OF POWER CONVERTER RIPPLE ON SLOW EXTRACTION AT THE CERN SPS
BEAM DYNAMICS SIMULATIONS OF THE EFFECT OF POWER CONVERTER RIPPLE ON SLOW EXTRACTION AT THE CERN SPS
复制标题
功率转换器纹波对 CERN SPS 缓慢提取影响的束流动力学模拟
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
F. Velotti
中科院分区：
文献类型：
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作者：
J. Prieto;M. Fraser;B. Goddard;V. Kain;L. Stoel;F. Velotti
SPS以400GeV/c的速度为CERN的北区固定目标实验提供缓慢提取的质子，持续时间从1-10秒不等。主磁铁中来自电源转换器的电流的低频纹波是一个常见的问题，它降低了缓慢提取的溢出质量。为了更好地了解功率转换器的稳定性如何影响损耗、束流发射度和溅射质量，使用MAD-X进行了粒子跟踪模拟，并与测量结果进行了比较，系统地研究了每个磁路的影响。讨论了对SPS慢萃取性能的影响。
The SPS provides slowly extracted protons at 400 GeV/c to CERN’s North Area Fixed Target experiments over spills of duration from 1-10 seconds. Low frequency ripple on the current in the main magnets originating from their power converters is a common issue that degrades the slow-extracted spill quality. In order to better understand how the stability of the power converters affects losses, beam emittance and spill quality, particle tracking simulations were carried out using MAD-X and compared to measurements, with the impact of each magnet circuit investigated systematically. The implications for the performance of the SPS slow extraction are discussed.