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X1A1 External Homepage

Beamline X1A1

General Information

Source Type
Insertion Device

Status
Operational

General User Beamtime
25%

Energy Range
.25-.50 keV

Beamline Type
Participating Research Team (PRT)

Technique(s)
Scanning transmission x-ray microscopy
X-ray absorption spectroscopy, near edge structure

Institution(s)
Brookhaven National Laboratory, Environmental Science Dept.
ExxonMobil Research and Engineering Co.
SUNY @ Plattsburgh
SUNY @ Stony Brook
University of Texas @ Houston

Research Types
Soft x-ray imaging.

Contact Information

Spokesperson The person from each beamline who acts as a contact point between the beamline management and NSLS administration. Contact for questions about the beamline scientific program, experimental capabilities, and beamline management.
Chris Jacobsen, SUNY @ Stony Brook, Chris.Jacobsen@stonybrook.edu, 1-631-632-8093

Local Contact The beamline staff member who is typically responsible for overseeing the daily operation and maintenance of the beamline. Contact for questions about beamline instrumentation, experimental details, and training.
Sue Wirick, SUNY @ Stony Brook, swirick@bnl.gov, 631/344-5601

Beamtime Scheduler The beamline staff member responsible for coordination of beamline schedule every trimester. Contact for questions about beamtime scheduling.
Sue Wirick, SUNY @ Stony Brook, swirick@bnl.gov, 631/344-5601

Beamline Phone
631-344-5601

Instrumentation

Beamline Characteristics

Energy Range Mono Crystal or Grating Resolution (ΔE/E) Flux Spot Size (mm) Total Angular Acceptance (mrad)
250 – 800 eV 892 lines/mm 0.05 eV (@ 290 eV, slits 25/25) 1 x 1018 ph/(sec-0.1%bw-mm2-mrad2)    

Source Type
35 period planar undulator, minimum gap 32 mm

Optical System
Mirror 1: Flat, nickel-coated silicon, 40 mrad grazing angle, water-cooled, 12.95 m from the source.

Mirror 2: Toroid, 50 mrad grazing angle, major radii 70.6 m, minor radii 0.509 m, gold-coated, water-cooled silicon. Focused beam horizontally onto entrance slit with a magnification of 0.12 and focused vertically onto the exit slit with a magnification of 0.48. Located 16.3 m from the source.

Monochromators: Three fixed, spherical gratings, 3.5 degree grazing angle, nickel-coated with discrete water-cooled entrance slits of 10, 25, 40, 70, 120, 200 microns and fixed vertical exit slit with slit sizes of 10, 25, 40, 70, 120, 200 microns and variable size horizontal exit slit. Located 19.7 m from the source.

Order-Sorting Mirrors: 2 parallel quartz mirrors, vertically deflecting at approx. 3 degree grazing angle, resulting in approx. 1 mm vertical beam offset used to preferentially absorb higher orders from the source. Located 24 m from the source.

Experimental Apparatus
Scanning transmission x-ray microscope with zone plate focusing with approximately 1 x 106 spatially coherent photons/sec in the zone plate focus

Computer System Hardware & Software
Beamline motors interfaced using Linux operating system and VME/Epics. Microscopy instrumentation uses IEEE interface for motors and Linux based operating system. IDL graphics/statistical package used for data analysis. One Microsoft operating system PC located at beamline. Access to cable network.

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