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X-ray Tomography

 

 

 

Tomography is 3D imaging of objects from shadow cast by a beam. At CAMD(Center for the Advanced Microstructures and Devices), we use monochromatic X-rays from 6 to 35 keV and can image with an effective spatial resolution of 2.5 microns. The field of view is determined by the X-ray beam height (1 mm) and the pixel number in the CCD camera (2k x 0.5k). So, CAMD can image a volume of 1 mm x 4 mm x 4 mm at 2.5 micron resolution. Because of the math of tomography, the object should have a diameter smaller than 4 mm. The speed of tomography imaging ranges for1 to 2 hrs, depending upon CCD shutter speed (1-10 seconds) and number of projections used to create the 3D image. The samples must be translucent to the X-rays; this can force samples to be even smaller than 4 mm. The image contrast is a function of variations in X-ray absorption through the sample: air-material structure is easy; tissue-tissue interfaces will required added contrast agents.

Upon compeletion of upgrading of CAMD synchrotron with 7.5 T multipole wiggler, tomography beamline will be located on a port of new wiggler. Tomography beamline will be equipped with Double Laue monochromator along with Double multilayer monochroamtor. For specifications of instrument, please refer to the Instrument.

Call for the beamtime proposal

We are currently in the process of upgrading CAMD synchrotron with 7.5T multipole wiggler. We will be open for the beamtime application as soon as beamline is operational.
A filled-out sample application, and a blank application.

 





X-ray Tomography Beamline
at
The J. Bennett Johnston, Sr. Center for Advanced Microstructures & Devices
Louisiana State University | Telephone: 225-578-9318 | Fax: 225-578-6954

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