EXPERIMENTAL STATION 4-1

CURRENT STATUS:	Beam line is closed for upgrade and expected to be available in summer 2008
SUPPORTED TECHNIQUES:	X-ray Absorption Spectroscopy
MAIN SCIENTIFIC DISCIPLINES:	Environmental / Materials / Chemistry / Biology
% TIME GENERAL USE:	100%
SCHEDULING:	see Proposal Submittal and Scheduling Procedures
SOURCE:	20-pole, 2.0-Tesla Wiggler ID End Station
BEAM LINE SPECIFICATIONS:   energy range grating type resolution DE/E spot size flux angular acceptance focused (crystal) 6500-30000 eV 10-4 3 x 16mm   0.75 mrad focused (multilayers) 6500-41000 eV 10-4 3 x 16mm   0.75mrad
OPTICS:	Flat bent cylinder mirror, silicon Resolutionn ~10-4 MIrror cutoff 10-30 KeVs
MONOCHROMATOR:	Double crystal; Si Liquid nitrogen-cooled monochrometer (same as other insertion device hard x-ray stations)
Angular range:	Distance(m)   Typical Q (2ps) Range(Å-1) 0.25   0.045 - 3.6 0.45 0.024 - 2.2 0.65 0.017 - 1.6 1.10 0.010 - 1.0 1.65 0.0068 - 0.67 2.40 0.0045 - 0.46 3.40 0.0034 - 0.33 E=11keV, 4mm circular beam stop assumed
INSTRUMENTATION:	Varies: Rails, GE Detector Array, Ionization Chamber Detection
DATA ACQUISITION AND ANALYSIS:	XAS-collect, EXAFSPAK, SUPER
RESPONSIBLE STAFF:	Matthew Latimer, 650-926-4944 (office) Joe Rogers, 650-926-3088 (office)
BEAM LINE PHONE NUMBER:	650-926-5241
GENERAL DESCRIPTION:	BL4-1 will be used for x-ray absorption spectroscopy measurements.  The user community is dominated by environmental science and chemistry applications, with additional activities in materials science, and biology. Station will be equipped with LN2-cooled monochromator, new mirrors and optimized optics layouts.
SCIENTIFIC APPLICATIONS / SELECTED RESULTS:
ENGINEERING NOTES:	http://www-ssrl.slac.stanford.edu/safety/ beamlines/bl4/

SSRL | Beamlines | User Admin | Safety

Last Updated:	22 APR 2008
Content Owner:	Matthew Latimer
Page Editor:	Nikola Stojanovic