SMB BEAM LINE UPGRADES

这个子项目是许多研究子项目中利用 资源由NIH/NCRR资助的中心拨款提供。子项目和 调查员(PI)可能从NIH的另一个来源获得了主要资金， 并因此可以在其他清晰的条目中表示。列出的机构是 该中心不一定是调查人员的机构。 该项目是为了升级SSRL的SMB束线，使用户能够从SPEAR3加速器升级中受益，该加速器将在较低发射度下将电流增加到500 mA，同时保持较长的束流寿命。这一阶段升级项目中的最后一条光束线BL4-2用于生物小角X射线散射，已于2008年完成，并重新启动了通用用户程序。一个用于软能量X射线吸收光谱分析的侧站BL4-3于2008年底投入使用。

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. This project is for upgrading the SMB beam lines at SSRL to enable users to take benefit of the SPEAR3 accelerator upgrade, which will increase the current to 500 mA, at lower emittance while maintaining the long beam life times. The last of the beam lines in this phase of the upgrade project, BL4-2 for biological small angle x-ray scattering, was completed in 2008 and the general user program restarted. One side station, BL4-3 to be used for soft energy x-ray absorption spectroscopy, was in commissioning at the end of 2008.