EXPERIMENTAL STATION 1-4

CURRENT STATUS: Open
SUPPORTED TECHNIQUES: Small angle x-ray scattering
Wide angle x-ray scattering
MAIN SCIENTIFIC DISCIPLINES: Materials
% TIME GENERAL USE: 100%
SCHEDULING: see Proposal Submittal and Scheduling Procedures
SOURCE: Bend magnet
BEAM LINE SPECIFICATIONS:
  energy range resolution
DE/E 		spot size flux angular
acceptance
focused
7100-9000 eV
 4.0 x 10-3
0.25 x 1.0 mm
~1010
2.0 mrad
OPTICS:  
MONOCHROMATOR: Bent crystal; Si
ABSORPTION: NA
INSTRUMENTATION: Small/Low Angle X-ray Scattering Camera System w/CCD Detector
DATA ACQUISITION AND ANALYSIS:  
RESPONSIBLE STAFF: John Pople, 650-926-5124
BEAM LINE PHONE NUMBER: 650-926-5214
GENERAL DESCRIPTION: BL1-4 is a general use SAXS/WAXS scattering facility. A new hutch was installed during the SPEAR3 shutdown, which greatly increased the range of reciprocal space able to be probed, opening up the facility to the demands of colloidal and aggregate scattering projects. The principal mirror on the beam line was replaced, and all upstream optics retrofitted to cope with the higher flux available from the SPEAR3 source. The beam line offers two CCD-based area detectors: a Roper Scientific camera whose very low dark current is optimal for the weak signals associated with small angle x-ray reflections and amorphous scattering, and a Photonic Science camera whose large area is optimal for the broad portions of reciprocal space required to be imaged in wide-angle x-ray scattering studies. Beam line stages include a solid/liquid sample temperature control stage (25-450°C with +/-2° C control), and a tensiometer mount providing beam in-situ uniaxial extension to a sample and a heating capacity up to 100°C. There is a drivable x-y flat-plate stage and a goniometer for scattering studies in reflection geometry. Customized software interfaces provide control of the optics and all sample environments, and extract physical parameters form the SAXS data collected. The user community focuses mainly on polymer scattering and medical applications.
SCIENTIFIC APPLICATIONS /
SELECTED RESULTS:
ENGINEERING NOTES: http://www-ssrl.slac.stanford.edu/safety/beamlines/bl1/

SSRL | Beamlines | User Admin | Safety

Last Updated: 04 SEP 2007
Content Owner: John Pople
Page Editor: Lisa Dunn