Local Contact: Allen M. Orville
 (631) 344-4739 amorv@bnl.gov

Spokesperson: Dieter Schneider (631) 344-3423 schneider@bnl.gov

PRT Spokesperson:


Beamline MicroSpectrophotometer Now Available
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Beamline Operation
Computers / Software
X26C beamline safety checklist
BLOSA form
Beamline Merit Graphic

Beamline.log
X26C Publications List
CBASS Manual 		The beamline machines have all the necessary software packages  to process you data locally. (HKL2000, Mosflm). ssh to café machines to have access to other software (SOLVE, hkl2map COOT etc)

HKL2000 site.def
Computers at X26C
Data Backup
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Inside the Hutch
 Beamline Characteristics
Crystals are mounted on a Crystal Logic diffractometer consisting of a mini-kappa goniometer (relocated from X25) and an ADSC Quantum 4 Detector, a two by two array CCD detector consisting of four modules that features an active area of 188 mm x 188 mm. 
Energy Range                           8-13 keV
Crystal Type                           Si(111)
Resolution (delta E/E)                 1 x 10-3 to 1 x 10-4
(suitable for MAD)
Flux (photons/sec) at 1Å               0.5 x 10^11 
  and .2 mm aperture                   (300 mA, 2.6 GeV)
Spot Size -- focused                   0.3H x 0.5V mm
Usual final aperture                   0.2 mm
Total Horizontal Angular Acceptance    2 mradians
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Benchtop MicroSpectrophotometer
Beamline MicroSpectrophotometer
A single crystal MicroSpectrophotometer based upon the 4dx system is currently available. The Newport 75W Xe Research Arc Lamp,  OceanOptics USB4000 and SpectraSuite software package enable uv/vis absorption measurments between ~350-850 nm from ~25 micron region of the crystal. A coldstream will keep the sample at 100K. The single crystal MicroSpectrophotometer system is mounted such that the optical focal point is coincident with the x-ray beam at x26c. This  enables correlated optical absorption spectroscopic data and diffraction data from the same crystal, without removing the sample from the diffractometer. A 25 micron region of the crystal is  probed and optical spectra are typically collected in approximately one second.  Redox active proteins and/or crystals containing optical chromophores are ideal candidates for this methodology.
Optical absortpion spectra can be collected between ~350-850 nm with samples held at 100K.
Last modified 19 May 2008 by AMO