Characterization Of Light Radiated From 11 m Long Undulator
Characterization Of Light Radiated From 11 m Long Undulator
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11 m 长波荡器辐射光的特性
DOI：
10.1063/1.1757862
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
H. Kitamura
中科院分区：
文献类型：
--
作者：
M. Niibe;M. Mukai;S. Miyamoto;Y. Shoji;S. Hashimoto;A. Ando;T. Tanaka;M. Miyai;H. Kitamura
10.8米长的波荡器（LU）已安装在新昴宿星储存环13.4米的直线段。在波荡器下游构建了一条单色器光束线，并对波荡器发出的辐射进行了特性分析。利用十字丝束流位置监测器确定了波荡器的辐射轴。通过测量氪气的电离光谱评估了变线距平面光栅单色器（VLS - PGM）的分辨率。分辨率至少超过1000，达到了预期性能。利用空心校正线圈成功校正了偶极误差场和地磁场的影响。得到一次谐波辐射的谱线宽E/dE约为75。一次谐波辐射的峰值强度与理论计算处于同一数量级。
The 10.8 m‐long undulator (LU) has been installed at the 13.4 m straight section of the NewSUBARU storage ring. A monochromator beamline was constructed in the downstream of the undulator, and radiation from the LU was characterized. The radiation axis of LU was determined with a cross‐wire beam position monitor. The resolution of the VLS‐PGM‐type monochromator was evaluated by measuring the ionization spectrum of Kr gas. The resolution was at least over 1000, and the expected performance was obtained. Dipole‐error fields and the effect of a geomagnetic field were successfully corrected using air‐core correction coils. The spectral linewidth of the first harmonic radiation, E/dE, was obtained as about 75. The peak intensity of the first harmonic radiation was the same order of magnitude as the theoretical calculation.