直流清洗电极电场对束流参数影响的测量与研究
Research and measurement of the influence on the beam parameters by DC clearing electrodes
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摘要: 本文采用保角变换法推导了直流清洗电极电场的计算公式,分析和研究了合肥光源直流清洗电极电场对束流参数的影响。例如,直流清洗电场存在垂直方向的二极分量将引起闭轨变化,四分量将产生工作点偏移,六极分量会产生附加校正色品。并给出了一些测量结果。Abstract: The expression of the DC clearing electrode field is derived by the conformal transformation method. The influence on the beam parameters by DC clearing electrode fields is analyzed. As examples, the vertical orbit change is induced by the dipole field, the betatron tune shift is induced by the quadrupole field, the additional corrected chromaticity is induced by the sexupole, and so on. several measurement results are given.
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Key words:
- conformal transformation /
- clearing electrodes /
- clearing field /
- beam orbit /
- betatron tune /
- corrected chromaticity
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