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Beamline X21

General Information

Source Type
Insertion Device

Status
Operational

General User Beamtime
50%

Energy Range Category
Hard X-Ray (1-50 keV)

Energy Range
5-15 keV

Beamline Type
Facility Beamline

Technique(s)
X-ray diffraction, single crystal
X-ray scattering, magnetic
X-ray scattering, resonant
X-ray scattering, small angle

Institution(s)
Boston University
NSLS
University of Vermont

Research Types
SAXS, In-situ Materials Processing, X-ray Scattering in a Magnetic Field, X-ray Scattering

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.
Christie Nelson, Brookhaven National Laboratory, csnelson@bnl.gov, 344-4916
Lin Yang, Brookhaven National Laboratory, lyang@bnl.gov, 344-5833

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.
Christie Nelson, Brookhaven National Laboratory, csnelson@bnl.gov, 344-4916
Lin Yang, Brookhaven National Laboratory, lyang@bnl.gov, 344-5833

Beamtime Scheduler The beamline staff member responsible for coordination of beamline schedule every trimester. Contact for questions about beamtime scheduling.
Christie Nelson, Brookhaven National Laboratory, csnelson@bnl.gov, 344-4916

Beamline Phone
631-344-5721

Instrumentation

Beamline Characteristics

Energy Range Mono Crystal or Grating Resolution (ΔE/E) Flux Spot Size (mm) Total Angular Acceptance (mrad)
5 – 20 keV interchangable Si(111) and multilayer 10-4 for Si(111), ~ 10-2 for multilayer 2 x 1012 ph/sec (@ 300mA, w/o slits) 0.5H x 0.5V in upstream hutch; defined by slits for SAXS 1

Source Type
Hybrid wiggler, 13 periods, 12 cm period

Optical System
This beamline has two experimental hutches. The upstream hutch is intended for scattering experiments that utilize the 13T superconducting magnet, or a 4-circle Huber diffractometer. The downstream hutch is intended for small angle scattering and in-situ film growth experiments.

Experimental Apparatus
Upstream hutch: 13 T superconducting magnet, with vertical field, mounted on a spectrometer table in a horizontal scattering geometry; 4-circle Huber diffractometer; displex cryostat

Downstream hutch: 3 precision slits, in vacuum attenuator and beam monitor, x-z-tilt stage for sample mount, evacuated beam path, 13 cm Mar CCD detector, spectrometer table for in-situ film growth.

Computer System Hardware & Software
EPICS based control system, SPEC.

Links