COMMISSIONING OF BL12-2 ? A NEW HIGH-BRIGHTNESS MACROMOLECULAR CRYSTALLOGRAPHY B

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来源获得了主要资金， 因此可在其他CRISP条目中表示。所列机构为 研究中心，而研究中心不一定是研究者所在的机构。 光束线12-2被进一步调试和优化，用于MAD实验和研究微晶。 主要工作集中在光束稳定性研究和改进实施。 聚焦镜的外壳和实验箱一样都装有主动温度控制装置。 精确的插入装置（真空波荡器）间隙变化作为X射线束能量的函数是自动的。 校准并实现了单色能量跟踪。 许多调试用户组收集了数据并提供了有价值的反馈，光束线逐渐被释放用于标准用途，从而产生了几个具有挑战性的晶体结构。

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. Beam Line 12-2 was further commissioned and optimized for MAD experiments and for studying microcrystals. The major effort focused on beam stability studies and improvement implementations. The focusing mirror enclosures were equipped with active temperature control as was the experimental hutch. Accurate insertion device (in-vacuum undulator) gap changes as a function of x-ray beam energy were automated. Monochromator energy tracking was calibrated and implemented. A number of commissioning user groups collected data and provided valuable feedback, and the beam line was gradually released for standard use, resulting in several published challenging crystal structures.