Construction of Undulator Beamline and Emission Spectrometerat the LBL Advanced Light Source for Soft X-ray SpectroscopyStudies of Solids

这项提案涉及在劳伦斯伯克利实验室的高级光源(ALS)建造一台新的软X射线(SX)发射光谱仪和与波荡器光束线相关联的SX光谱终端站。波荡器和高性能球面光栅单色仪将提供40倍的光子通量和200倍的亮度，用于增强激发辐射的强度和/或分辨率。光谱仪和终端站将极大地扩展目前在发射中测量的光谱范围，允许垂直和平行于激发光束的偏振方向测量发射，允许测量吸收光谱和发射光谱，大大增强现场样品制备和表征设施，并允许与光束线的其他用户联合进行SX光谱和电子光谱研究。田纳西大学、橡树岭国家实验室和NIST的科学家参与了这一建设项目。该团队将在ALS与来自阿尔马登和约克敦的IBM团队共同运营这条波荡器光束线。

This proposal is concerned with the construction of a new soft x-ray (SX) emission spectrometer and SX spectroscopy end station associated with an undulator beamline at the Advanced Light Source (ALS) at Lawrence Berkeley Laboratory. The undulator and high performance spherical grating monochromator will provide 40 times greater photon fluxed and 200 times higher brightness that will be used to enhance the intensity and/or resolution of the exciting radiation. The spectrometer and end station will greatly extend the present spectral range measured in emission, allow measurement of emission both perpendicular and parallel to the polarization direction of the exciting beam, allow measurement of both absorption and emission spectra, greatly enhance in-situ sample preparation and characterization facilities, and permit joint SX spectroscopy and electron spectroscopy studies with other users of the beamline. The construction project involves scientists at the University of Tennessee, Oak Ridge National Laboratory and NIST. This group will jointly operate this undulator beamline at the ALS with an IBM group from both Almaden and Yorktown.