EXPERIMENTAL STATION 4-1

CURRENT STATUS: Open
SUPPORTED TECHNIQUES: X-ray Absorption Spectroscopy
MAIN SCIENTIFIC DISCIPLINES: Environmental / Materials / Chemistry / Biology
% TIME GENERAL USE: 100%
SCHEDULING: Proposal Submittal and Scheduling Procedures
Current SPEAR and Beam Line Schedules
SOURCE: 20-pole, 2.0-Tesla Wiggler, 0.75 mrad, side station
BEAM LINE SPECIFICATIONS:
  energy range grating type resolution
DE/E 		spot size flux angular
acceptance
unfocused
    5,500-38,000eV

     10-4
       4x18mm
 
  0.75 mrad
OPTICS: M0 mirror: Flat, bent vertically collimating, 1 m, Si, Rh-coated, cutoff 9-23 keV, LN2-cooled monochromator. Energies over 22keV are run with the mirror out.
MONOCHROMATOR: Si(220) f=0° or Si(220) f=90° double-crystal, non-fixed exit slit

Monochromator Crystal Glitch Library

Crystal changes need to be scheduled and coordinated in advance with BL support staff.
ABSORPTION:  
INSTRUMENTATION: Varies: Standard EXAFS rail, Lytle and Ge array fluorescence detectors. Inquire about special needs.
DATA ACQUISITION AND ANALYSIS: Data Aquisition: XAS-Collect
Data Analysis: FEFFIT, SIXPAK, EXAFSPAK

X-ray Data Booklet
RESPONSIBLE STAFF: John Bargar, 650-926-4949, cell 650-284-9573
Matthew Latimer, 650-4944
Erik Nelson,650-926-5103
BEAM LINE PHONE NUMBER: 650-926-5241
On-site Users: Contact the Duty Operator at 9-926-4040
GENERAL DESCRIPTION: BL4-1 is an unfocused beam line dedicated to x-ray absorption spectroscopy measurements in the hard x-ray energy range (~5.5-38 keV). Equipment includes a 13-element detector, Lytle detector, and available LHe or LN cryostats. Applications include mainly MEIS, chemistry, catalysis and materials science.
SMB Sample Preparation Labs The SSRL Structural Molecular Biology (SMB) Sample Preparation Laboratories are available to users by prearrangement. To use a laboratory, you must complete laboratory training, and provide a list of all chemicals that you are bringing to use or store in the Sample Preparation Laboratory. For details, contact Cynthia Patty (650-926-3925).
SCIENTIFIC APPLICATIONS /
SELECTED RESULTS:
ENGINEERING NOTES: http://www-ssrl.slac.stanford.edu/safety/ beamlines/bl4/

SSRL | Beamlines | User Admin | Safety

Last Updated: 01 FEB 2011
Content Owner: Matthew Latimer
Page Editor: Nikola Stojanovic