EXPERIMENTAL STATION 2-1

CURRENT STATUS:	Open
SUPPORTED TECHNIQUES:	Powder diffraction Thin film diffraction
MAIN SCIENTIFIC DISCIPLINES:	Materials / Environmental
% TIME GENERAL USE:	100%
SCHEDULING:	Proposal Submittal and Scheduling Procedures Current SPEAR and Beam Line Schedules
SOURCE:	1.3 Tesla Bend Magnet
BEAM LINE SPECIFICATIONS:   energy range resolution DE/E spot size flux angular acceptance focused 4000-14500 eV ~5 x 10-4 .20 x 0.45 mm   1.5 mrad
OPTICS:	Bent cylinder, single-crystal Si, Rh-coated mirror Radii: 2900 m (adjustable) x 52 mm Mean angle of incidence: 4.2 milliradians Cut off energy: 14.5 keV, Magnification: 1.1
MONOCHROMATOR:	Si(111), Si(220) Si(400), upward reflecting, double-crystal Monochromator Crystal Glitch Library Crystal changes need to be scheduled and coordinated in advance with BL support staff.
ABSORPTION:	584 microns Be, 10.7 meters He, 15.2 microns C
INSTRUMENTATION:	Detector: ion chambers, PMTs, current amplifiers, Soller slits, crystal analyzers. Diffractometer: Huber 2-circle, high-resolution powder sample LHe Cyrostat (4-350 K), hot state (25C-900C)
DATA ACQUISITION AND ANALYSIS:	Diffractometer Control Software: SPEC For questions and issues related to SPEC, contact beam line staff or send an email to M$SPEC@ssrl.slac.stanford.edu Origin GSAS X-ray Data Booklet
RESPONSIBLE STAFF:	Beam Line Technical Support: Charles Troxel, 650-714-7821 Scientific Support: Apurva Mehta, Stefan Mannsfeld, Mike Toney, 650-926-2056
BEAM LINE PHONE NUMBER:	650-926-5221 On-site Users: Contact the Duty Operator at 9-926-4040
GENERAL DESCRIPTION:	BL2-1 is a dedicated powder and thin film diffraction station. It is equipped with Huber 2-circle goniometer, a high-resolution crystal-anlyzer detector, and several different types of sample stages, including a motorized xyz state, a "wet" liquid sample stage and a cryostat (temperature range 4 K - 350 K). Analysis software provided include Origin (from Microcal), GSAS (Rietveld analysis), and a searchable powder diffraction database. The main user communities are materials science, environmental science and archaeometry.
Sample Preparation Labs:	The SSRL Structural Molecular Biology (SMB) Sample Preparation Laboratories are available to users by prearrangement. To use a laboratory, users must complete laboratory training, and provide a list of all chemicals to be brought, used or stored in the Sample Preparation Laboratory. For details, contact Cynthia Patty (650-926-3925).
SCIENTIFIC APPLICATIONS / SELECTED RESULTS:	August 2010: Unusual Structure Found for an Organic Semiconductor April 2010: Reducing Fuel Cell Costs by Changing the Structure and Reactivity of Platinum February 2010: Researchers Rediscover the Structure of Water November 2009: Stanford-led research helps overcome barrier for organic electronics September 2009: Leslie Jimison Receives Klein Award July 2009: Molecular Mixing in Organic Solar Cells March 2007: Ancient Warriors and the Origin of Chinese Purple October 2006: Structural Sequestration of Uranium in Bacteriogenic Manganese Oxides August 2006: Hydrogen: Key to a Sustainable Future November 2004: Structural Studies of Catalytically Stabilized Industrial Hydrotreating Catalysts November 2003: Remediation of Uranium-contaminated Water at Fry Canyon, Utah September 2003: Synchrotron Mesodiffraction: A Tool for Understanding Turbine Engine Foreign Object Damage
ENGINEERING NOTES	http://www-ssrl.slac.stanford.edu/safety/beamlines/bl2/

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Last Updated:	27 JAN 2011
Content Owner:	Bart Johnson
Page Editor:	Lisa Dunn