Cooling systems and mirror systems

Robert Campbell rlc at bonzai.crchul.ulaval.ca
Mon Oct 28 16:22:55 EST 1996


Dear colleagues,

We are about to embark on an upgrade to our Rigaku RU-200/R-AXIS IIc
system.  We wish to purchase a crystal cooling system and a set
of focussing mirrors.  

Is there any reason to not go with the Oxford Cryostream system (it is
the only one I've used so I'm biased in that respect)?  Do all the major
systems (Oxford, MSC and Nonius have given me some information) allow
refilling on the fly for continuous operation?  Are any of them more
susceptible to icing up than the others?  If one is mostly operating down
around 100K, is stability to within 0.1K vs 0.5K important?  It wouldn't
seem to be to me.

With regards to focussing mirrors I have no personal experience.  Any
pointers that anyone would like to send my way?  MSC vs Supper.  Others
that I should investigate?  I suppose that ease of optimizing the
geometry as well as overall function are the important points.

Finally, for both pieces of equipment, have I forgotten any important
questions?  (Likely... :) )

I thank in advance all who wish to respond either by e-mail or by
posting to the newsgroup.

Cheers,
Robert
--
Robert L. Campbell     rlc at bonzai.crchul.ulaval.ca
Laboratoire d'Endocrinologie Moléculaire, 
Centre de Recherche du CHUL, Université Laval, 
Ste-Foy, Québec,   CANADA





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