Components for data transfer to an HPSS server and for video are being modified to support bandwidth reservation. As an adjunct to this project a Cisco 7500 series router has been placed in the Abilene network operations center to extend Emerge from ESNet through Abilene to Indiana University. We do not replace existing code for acquisition directly from the CCD, rather the data acquisition components will monitor a directory into which existing code for reading the detector places images. This approach allows Xport components to be added to an existing experiment incrementally and without disrupting current data acquisition practices. At the present setup and acquisition components are being developed for Bruker goniostat and detector systems, and these are expected to port easily to other vendors detectors.
Macromolecular biologists uses several packages for analyzing diffraction patterns.
Our approach to the community code problem is to provide transport and storage formats for CCD images and intermediate reflection data that can be easily converted to an appropriate format for a given analysis suite. The diagram above illustrates the current capabilities and operating modes of the Xport software. Crystal samples are sent to the beamline or MSC facility. At the beginning of a run a researcher remote to the X-ray source initiates a video teleconferencing session with beamline staff. Parameters for crystal movement and beam characteristics are determined by the remote researcher and the experiment is initiated either remotely or locally.