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Re: [sdpd] Synchrotron powder diffraction
>I would echo this for the Advanced Photon Source, and in particular,
>MR-CAT. We have the capability of doing high resolution PD at energies
>from 10keV to 80keV. The hutch is not set up exclusively for this but is
>easily reconfigured. MR-CAT is now accepting Independent Investigator
>proposals through the APS User Office. Relevant links are
>
>http://www.aps.anl.gov
>
>http:/ixs.iit.edu/mrcat
>
>Carlo Segre, Deputy Director, MR-CAT
How easy is "easy"? A common(?) folklore about "multi-use" synchrotron
beamlines can be that the supposedly "routine" and "easy" setup can
take from 1/2 to 2 days (or the entire beamtime allocation without
working in a satisfactory manner) - where custom made, possibly neurotic
equipment has to be jury rigged and aligned (while the minutes and
hours of what users might hope would be productive beamtime slip away)
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Repeating a rant I have stated on previous occassions:
A rival approach to this which seems to really pay dividends in
"high reliability and high productivity synchrotron beamtime" is that
taken by the 9.8 microcrystal single crystal beamline run by Simon Teat
at Daresbury, UK lab. A "dedicated" beamline with an integrated piece
of hardware based around a single commercial vendor (in this case a
commodity Bruker Smart CCD diffractometer). Besides reliability and
effeciency of beamtime, this has the advantage that if a user
already know hows to use a laboratory SMART or similar system,
they should not have difficulty immediately making effective use of 9.8.
http://srs.dl.ac.uk/xrd/9.8/
If the beam shines, users of 9.8 are pretty much guaranteed to collect
very high quality, immediately analysable single crystal data (without
the risks and frustrations associated with multi-use beamlines).
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Getting back to the general them of this thread:
How many dedicated powder synchrotron beamlines exist that users of
laboratory powder diffractometers can pretty much just start collecting
high quality data (reliable - no thrills - 9.8 style) without the risks
of time wasting and X-rays going spare associated with setting up
and aligning non-dedicated equipment?
Lachlan.
-----------------------
Lachlan M. D. Cranswick
Collaborative Computational Project No 14 (CCP14)
for Single Crystal and Powder Diffraction
Birkbeck University of London and Daresbury Laboratory
Postal Address: CCP14 - School of Crystallography,
Birkbeck College,
Malet Street, Bloomsbury,
WC1E 7HX, London, UK
Tel: (+44) 020 7631 6849 Fax: (+44) 020 7631 6803
E-mail: l.m.d.cranswick...@dl.ac.uk
WWW: http://www.ccp14.ac.uk
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