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X28C External Homepage

Beamline X28C

General Information

Source Type
Bending Magnet

Status
Operational

General User Beamtime
25%

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

Energy Range
Focused White Beam

Beamline Type
Participating Research Team (PRT)

Technique(s)
X-ray Footprinting

Institution(s)
Case Western Reserve University

Research Types
Radiolytic footprinting of DNA, RNA and proteins. Static and time-resolved studies of conformations of macromolecules.

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.
Mark Chance, Case Western Reserve University, mark.chance@case.edu, 216-368-4406

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.
Sayan Gupta, Case Western Reserve University, sayan@bnl.gov, 6313443725
Jennifer Bohon, Case Western Reserve University, jbohon@bnl.gov, 631/344-4613

Beamtime Scheduler The beamline staff member responsible for coordination of beamline schedule every trimester. Contact for questions about beamtime scheduling.
Sayan Gupta, Case Western Reserve University, sayan@bnl.gov, 6313443725

Beamline Phone
631-344-5628

Instrumentation

Beamline Characteristics

Energy Range Mono Crystal or Grating Resolution (ΔE/E) Flux Spot Size (mm) Total Angular Acceptance (mrad)
White Beam White Beam None due to white light only Unfocused beam 4.2 x 1016 ph/s; 0.5 mm diameter focused beam: 2.9 x 1016 ph/s 0.5 mm FWHM 6 mrad

Source Type
Bending magnet

Optical System
Tapered Cu aperture with 5 mm vertical x 123 mm horizontal exit dimensions; first and second Be windows: 0.01" thick at 8.96 m and 15.5 m from source, respectively; Toroidal focusing mirror at 9.378 m from the source.

Experimental Apparatus
Computer controlled Pre-shutter, XZ transition table, Millisecond (unibilitz®) shutter, Kintek® quench flow apparatus, computer controlled multiple sample holder (with temperature regulation), dark room facility for photosensitive samples.

Computer System Hardware & Software
Motor control unit, KinTek® controller, Uniblitz shutter controller, XDAC-Parker Compumotor 6K8 interface.

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