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Beamtime available at CHESS, September 16-November 10, 2009
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The CHESS/MacCHESS facility, located at Cornell University in Ithaca,
NY, invites macromolecular crystallographers and users of BioSAXS to
apply for time on one or more of our stations:
A1 station, monochromatic wiggler source, suitable for Se SAD
experiments as well as native data collection, with ADSC Q-210 detector.
F1 station, monochromatic wiggler source, suitable for Br SAD or native
data, with ADSC Q-270 detector and ALS-type automounter.
F2 station, wiggler source tunable from 7 - 14 keV, suitable for MAD/SAD
experiments, with ADSC Q-210 detector. Also can be equipped for BioSAXS
experiments.
F3 station, bending magnet source with multilayer optics, tunable from
5.9 - 15.4 keV, suitable for SAD experiments using Fe, Co, etc., with
ADSC Q-4u detector.
G1 station, wiggler source with multilayer optics, general purpose
station one of whose standard configurations is for SAXS experiments;
good data can be obtained for d-spacings up to 2500 Angstroms.
===== Special options ======
Pressure-cryocooling of (unfrozen) crystals is available by
prearrangement. This method can reduce the damage induced by
cryocooling, often with no need for cryoprotectants (Kim et al., Acta
Cryst. D61, 881-890 (2005)).
Microbeam (down to about 5 microns) using focusing capillary optics is
available on request at any of the stations.
======= Support =======
CHESS/MacCHESS provides a high level of support for all users. We are
very willing to help with non-standard experimental setups - just ask.
Our staff scientists also invite collaborations for more extended
projects investigating novel techniques.
Mail-in service is available - we will be pleased to collect (and
process, if you like) data from crystals that you send to us.
======== Applying for time ========
Visit http://www.chess.cornell.edu and look at "Beam Time" under the
"Users" menu. All applications can be done on line, any time. Processing
of proposals is rapid, with a turn-around time of just a couple of weeks
for the usual Express Mode option.
More information is available on the web site, or contact administrator
Kathy Dedrick, [email protected].
