Fast Resonant Extraction from the CERN SPS
Fast Resonant Extraction from the CERN SPS
复制标题
从 CERN SPS 快速共振提取
DOI：
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发表时间：
1979
影响因子：
1.8
通讯作者：
G. Schroder
中科院分区：
文献类型：
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作者：
K. Kissler;J. Riche;W. Scandale;G. Schroder
在SPS中使用两种不同的快速共振提取模式：溢出持续时间为1 ms至3 ms的非相干半整数提取和溢出持续时间为约70 μ s（两个23 μ s脉冲串间隔为23 μ s）至1 ms的相干半整数提取。特殊要求是在提取部分光束后停止2 ms溢出。然后，剩余的射束被加速到更高的能量，并且可以在SPS处通过操作中的任何其他提取模式来提取。相干溢出的持续时间通常通过选择快速铁氧体反冲器的合适强度来调节，快速铁氧体反冲器在使光束接近共振之后将光束踢入相空间中的不稳定区域。对最短相干溢出进行了较详细的研究。理论预测和测量之间的良好协议。
Two different modes of fast resonant extraction are used at the SPS: non-coherent half-integer extraction with a spill duration from 1 ms to 3 ms and coherent half-integer extraction with a spill duration from about 70 ¿s (two 23 ¿s bursts separated by a 23 ¿s interval) to 1 ms. A special requirement is to stop a 2 ms spill after extraction of part of the beam. The remaining beam is then accelerated to higher energies and can be extracted by any of the other extraction modes in operation at the SPS. The duration of a coherent spill is generally adjusted by choosing a suitable strength of the fast ferrite kicker which kicks the beam into the unstable region in phase space after it has been brought close to the resonance. The shortest coherent spill was studied in some detail. Excellent agreement was found between theoretical predictions and measurements.