SMB BEAM LINE UPGRADES

这个子项目是许多研究子项目中的一个 由NIH/NCRR资助的中心赠款提供的资源。子项目和 研究者（PI）可能从另一个NIH来源获得主要资金， 因此可以在其他CRISP条目中表示。列出的机构是 研究中心，而研究中心不一定是研究者所在的机构。 该项目旨在升级SSRL的SMB束线，使用户能够受益于SPEAR 3加速器升级，这将在较低的发射度下将电流增加到500 mA，同时保持较长的束寿命。 升级项目这一阶段的最后一条光束线，即用于生物小角度X射线散射的BL 4 -2，于2008年完成，通用用户程序重新启动。 其中一个侧站BL 4 -3将用于软能量X射线吸收光谱分析，已于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.