Richard Jones
Thank you for your interest.
You are looking for a back up for the 80m tomography beamline at 
Daresbury. This can deliver white and monochromatic light with high 
collimation and also provide you with a 2 circle diffractometer with XY 
sample movement.
The x-ray facilities at the ALS are not as general purpose as this, as 
we tried to establish programs in other niche areas.  The tomography 
facility can provide white radiation over a large area (6x44mm).  We 
have not done topography yet, we have not really established how uniform 
the beam is for that, it will not be as uniform in the vertical as the 
Daresbury beamline as ours is only 20m long. We do not have a 
diffractometer set up to do the rocking curves, but there is a 
monochromator in the beamline that has some strained Si(111) crystals 
in. We plan to replace them with non strained crystals (the strain 
feature is a consequence of the internal water cooling of the crystals). 
A possible way to do the work you are considering is to reflect the 
monochromatic beam from your sample and detect it with the tomography 
x-ray ccd. A series of images taken as the energy is scanned should 
image the variation of rocking curve over the sample surface. I think 
that is what you want. So for us, we need new monochromator crystals and 
a stable scanning monochromator. The later may be a problem as the 
Tomography facility is aimed at non scanning so the mono requires some 
work to do the smooth scanning  task. Both of these tasks are on us to 
bring the facility up to a more useful level beyond its main tomography 
objective. They will occur slowly unless some outside user provides 
drive and funding.
I suspect the APS, NSLS or SSRL may have better standalone facilities as 
they are more geared towards hard x-rays, whereas the ALS is geared 
towards soft xrays with some niche hard x-ray facilities for local 
users. Still it depends on the response you get from the other places.
Hope this is helpful
Thank you
Alastair MacDowell