• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>Journal of Synchrotron Radiation >A phase-space beam position monitor for synchrotron radiation
【2h】

A phase-space beam position monitor for synchrotron radiation

机译：用于同步加速器辐射的相空间束位置监控器

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The stability of the photon beam position on synchrotron beamlines is critical for most if not all synchrotron radiation experiments. The position of the beam at the experiment or optical element location is set by the position and angle of the electron beam source as it traverses the magnetic field of the bend-magnet or insertion device. Thus an ideal photon beam monitor would be able to simultaneously measure the photon beam’s position and angle, and thus infer the electron beam’s position in phase space. X-ray diffraction is commonly used to prepare monochromatic beams on X-ray beamlines usually in the form of a double-crystal monochromator. Diffraction couples the photon wavelength or energy to the incident angle on the lattice planes within the crystal. The beam from such a monochromator will contain a spread of energies due to the vertical divergence of the photon beam from the source. This range of energies can easily cover the absorption edge of a filter element such as iodine at 33.17 keV. A vertical profile measurement of the photon beam footprint with and without the filter can be used to determine the vertical centroid position and angle of the photon beam. In the measurements described here an imaging detector is used to measure these vertical profiles with an iodine filter that horizontally covers part of the monochromatic beam. The goal was to investigate the use of a combined monochromator, filter and detector as a phase-space beam position monitor. The system was tested for sensitivity to position and angle under a number of synchrotron operating conditions, such as normal operations and special operating modes where the photon beam is intentionally altered in position and angle at the source point. The results are comparable with other methods of beam position measurement and indicate that such a system is feasible in situations where part of the synchrotron beam can be used for the phase-space measurement.
机译：对于大多数（如果不是全部）同步加速器辐射实验，同步加速器束线上的光子束位置的稳定性至关重要。在电子束源穿过弯曲磁体或插入设备的磁场时，电子束源在实验位置或光学元件位置处的位置和角度由电子束源的位置和角度设置。因此，理想的光子束监视器可以同时测量光子束的位置和角度，从而推断出电子束在相空间中的位置。 X射线衍射通常用于在X射线光束线上制备单色光束，通常以双晶体单色仪的形式。衍射将光子的波长或能量耦合到晶体内晶格平面上的入射角。由于来自源的光子束的垂直发散，因此来自这种单色仪的光束将包含能量散布。这个能量范围可以轻松覆盖33.17 keV的过滤器元件（例如碘）的吸收边缘。具有和不具有滤波器的光子束足迹的垂直轮廓测量可以用于确定光子束的垂直质心位置和角度。在此处描述的测量中，使用成像检测器通过水平覆盖部分单色光束的碘滤光片测量这些垂直轮廓。目的是研究将组合的单色仪，滤光器和检测器用作相空间光束位置监视器。测试了该系统在许多同步加速器操作条件下对位置和角度的敏感性，例如正常操作和特殊操作模式，其中有意在源点改变光子束的位置和角度。结果与光束位置测量的其他方法可比，并且表明这种系统在同步加速器光束的一部分可以用于相空间测量的情况下是可行的。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号