Measurement of a small vertical emittance with a laser wire beam profile monitor
Measurement of a small vertical emittance with a laser wire beam profile monitor
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使用激光线束轮廓监测仪测量小垂直发射率
DOI：
10.1103/physrevstab.5.122801
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
M. Takano
中科院分区：
文献类型：
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作者：
H. Sakai;Y. Honda;N. Sasao;S. Araki;H. Hayano;Y. Higashi;K. Kubo;T. Okugi;T. Taniguchi;N. Terunuma;J. Urakawa;M. Takano
本文描述了在KEK加速器试验装置(ATF)阻尼环中用激光线束轮廓监测仪测量垂直发射度的方法。这种监测器是基于电子与激光目标的康普顿散射过程，激光目标是通过将连续激光光束注入法布里-珀罗光学腔而产生的。我们将监视器安装在阻尼环的直段，并在三种不同的环条件下测量了垂直发射度。在所有情况下，ATF环都以单束模式在1.28GeV工作。当调谐到超低发射度时，获得了${\ensuremath{\epsilon}}_{y}=(1.18\ifmmode\pm\else\textpm\fi{}0.08)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}11}\text{的垂直发射度。这表明ATF阻尼环在垂直方向上也实现了目标值。
We describe in this paper a measurement of vertical emittance in the Accelerator Test Facility (ATF) damping ring at KEK with a laser wire beam profile monitor. This monitor is based on the Compton scattering process of electrons with a laser light target which is produced by injecting a cw laser beam into a Fabry-Perot optical cavity. We installed the monitor at a straight section of the damping ring and measured the vertical emittance with three different ring conditions. In all cases, the ATF ring was operated at 1.28 GeV in a single bunch mode. When the ring was tuned for ultralow emittance, the vertical emittance of ${\ensuremath{\epsilon}}_{y}=(1.18\ifmmode\pm\else\textpm\fi{}0.08)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}11}\text{ }\mathrm{mrad}$ was achieved. This shows that the ATF damping ring has realized its target value also vertically.