Tools for rapid and reliable change of optical configuration at LIX

Abstract

Abstract The LIX beamline (16-ID) at NSLS-II is a scattering beamline dedicated to probing structures in biological samples. The beamline supports both solution scattering and microbeam scanning structural mapping experiments. In addition to providing a stable and reliable beam, the beamline optical system must be able to quickly change configuration to support multiple modes of operation that require different beam properties such as photon energy and spot size, and with minimal effort from the experimenter. In order to do so, we have fine-tuned optical components and implemented automation. The beam stability is maintained using multiple beam position monitors and corresponding feedback on optical components. Vibrational stability of instruments is monitored and correspondingly mitigated. We describe the software and devices developed to automate configuration changes and outline the process of using these tools during operations.