Protein crystals smaller than 30 micrometers in diameter can be
difficult to handle and produce weak diffraction. We have one 48
hour slot left in our Fall running schedule for
microcrystallography. An 18 micrometer beam is an excellent way to
improve signal by delivering photons only where they are needed. Our
fully-enclosed helium cryostream, which operates during these special
microcrystal time slots, can also dramatically increase the signal-to-
noise ratio of weak data. ALS-style automounting is supported and a
full set of tools and sample pucks is available for loan on request.
Even users with large crystals can sometimes benefit from microbeam.
If you have difficult-to-separate clusters of crystals or
inhomogeneous crystals with imperfections, microbeam can take
advantage of small regions of good diffraction. Currently unit cells
up to 250 Angstroms are supported.
Please contact Kathy Dedrick ([EMAIL PROTECTED]) for information on
how to apply for microbeam time at MacCHESS f1 station.
Richard Gillilan
MacCHESS
Cornell University
